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• Page 2: Preface

  MD320/MD320N User Manual Preface Preface Thank you for purchasing MD320/MD320N series inverters. This instruction manual describes how to properly use MD320/MD320N series inverter. Please read the instruction manual carefully before using(Before installation,operation,maintenance and inspection).Besides, please use the product after understanding the safety precautions. Precautions The drawings presented in this instructions are sometimes shown without …

• Page 3
  Preface MD320/MD320N User Manual Introduction The MD series of frequency converters is a new generation of modular, high performance frequency converters that represent the future of inverters. Compared with traditional inverters, in meeting the performance and function demands of customers, this series does not use multiple products (which add external manufacturing, sales, user and maintenance costs), but instead creates a modular design based on the specific needs of the customer, resulting in a customized platform that incorporates a single series of products that are a multi-module…
• Page 4
  PID control, MS speed, and swing frequency and so on. According to the degree of complexity of functions, Inovance Technology provides two sub-modules for options of the customers, that is, MD320 functional module and MD300 functional module.
• Page 5
  Preface MD320/MD320N User Manual 3) The top-layer module of MD series inverter is a specialized industry module and also a platform provided to satisfy the specialized industry demands, enabling the customers to either apply the existing solutions or perform secondary development according to their own needs.
• Page 6
  Article 7.3.2 and 7.3.6) MD320N: MD320N series is an upgrade of the MD320 series in terms of external appearance and structural design. Its function is the same as MD320 series inverters. The difference between MD320N series inverter and MD320 series inverter are as follows: MD320N series inverter’s enclosure are divided into three parts, it contains top- enclosure,…

• Page 7: Table Of Contents

  Contents Preface ……………….1 Chapter 1 Safety and Precautions……….10 1.1 Safety precautions………………….10 1.2 Precautions……………………13 Chapter 2 Product Information……….18 2.1 Designation Rules………………….18 2.2 Nameplate……………………..18 2.3 MD320 Inverter Series………………….19 2.4 Technical Specifications…………………21 2.5 Physical Appearance and Dimensions of Mounting Hole………..23 2.6 Optional Parts……………………33 2.7 Routine Repair and Maintenance of inverter…………..35 2.8 Instructions on Warranty of Inverter………………36 2.9 Prototyping Guide…………………..37…

• Page 8: Table Of Contents

  Group F1 Motor Parameters………………..102 Group F3 V/F Control Parameters………………107 Group F4 Input Terminal………………….110 Group F6 Start/Stop Control………………..124 Group F8 Auxiliary Function………………..132 Group FA Process Control PID Function……………..142 Group FB Swing Frequency, Fixed Length and Count…………145 Group FC MS Speed Function and Simple PLC Function…………147 Group FD Communication Parameters……………….153 Group FF Factory Parameters (Reserved)…………….153 Group FP User Password………………….153…

• Page 9
  Brake Unit （ or Energy Feedback Unit ） (Optional) Noise Filter It can give full play to the regenerative capacity of the inverter, please use according to needs. Inovance Inverter DC Reactor (standard configuration) Grounding In order to prevent electric shock, the motor and inverter must be well grounded.
• Page 10
  Safety and Precautions…

• Page 11: Chapter 1 Safety And Precautions

  Safety and Precautions MD320/MD320N User Manual Chapter 1 Safety and Precautions Safety defi nition: In this manual, safety precautions are divided into two types below: Danger arising due to improper operations may cause severe hurt or even death. Danger arising due to improper operations may cause severe hurt or even death. Caution: Danger arising due to improper operations may cause moderate hurt or light hurt Caution: Danger arising due to improper operations may cause moderate hurt or light hurt or equipment damage.

• Page 12
  MD320/MD320N User Manual Safety and Precautions Caution Do not drop the lead wire stub or screw in the inverter. Otherwise it may  damage the inverter. Please install the driver in the place where there is no direct sunlight or no …
• Page 13
  Safety and Precautions MD320/MD320N User Manual 1.1.4 Before Power-on: Caution Please confi rm whether the power voltage class is consistent with the rated  voltage of the inverter and whether the I/O cable connecting positions are correct, and check whether the external circuit is short circuited and whether the connecting line is fi rm.

• Page 14: Precautions

  MD320/MD320N User Manual Safety and Precautions 1.1.6 During the operation: Danger Do not touch the fan or discharge resistor to sense the temperature.  Otherwise, you may get burnt! Detection of signals during the operation shall only be conducted by …

• Page 15
  Safety and Precautions MD320/MD320N User Manual power of the inverter is higher than the rated power of the motor, the relevant motor protection parameters in the in the inverter shall be adjusted, or thermal relay shall be mounted to protect the motor.
• Page 16
  MD320/MD320N User Manual Safety and Precautions 1.2.10 Lightning Impulse Protection The series inverter has lightning over current protection device, and has certain self-protection capacity against the lightning. In applications where lightning occurs fre quently, the user shall install additional protection devices at the front-end of the inverter. 1.2.11 Altitude and Derating In areas with altitude of more than 1,000 meters, the heat sinking effect of the inverter may turn poorer due to rare air.
• Page 17
  Safety and Precautions MD320/MD320N User Manual…
• Page 18
  Product Information…

• Page 19: Chapter 2 Product Information

  0.4 0.75 …… 11 15 Fig.2-1 Designation Rules Caution: The MD320N series is an upgrade of the MD320 series in terms of external appearance and structural design. Except for special notes on the MD320N, all the following information is appropriate for the MD320N series of products.

• Page 20: Md320 Inverter Series

  MD320/MD320N User Manual Product Information 2.3 MD320 Inverter Series Table 2-1 MD320 Inverter Model and Technical Data Power Input Output Adaptable Motor Inverter model capacity current current (kW) (kVA) Single-phase power supply: 200…240V，50/60Hz MD320NS0.4 MD320NS0.7 0.75 MD320NS1.5 14.0 MD320NS2.2 23.0 Three-phase power supply: 380…480V，50/60Hz MD320NT0.7 0.75…

• Page 21
  Product Information MD320/MD320N User Manual Power Input Output Adaptable Motor Inverter model capacity current current (kW) (kVA) MD320NT160 231.0 307.0 304.0 MD320NT200 250.0 385.0 377.0 MD320NT220 280.0 430.0 426.0 MD320NT250 355.0 468.0 465.0 MD320NT280 396.0 525.0 520.0 MD320NT315 445.0 590.0 585.0 315.0 MD320NT355…

• Page 22: Technical Specifications

  MD320/MD320N User Manual Product Information 2.4 Technical Specifications Table 2-2 MD320 Inverter Technical Specifications Item Specifications Maximum 300Hz frequency Carrier 0.5k to 16kHz; the carrier frequency will be automatically frequency adjusted according to the load characteristics. Input frequency Digital setting: 0.01Hz resolution Analog setting: maximum frequency ×0.1% Open loop vector control (SVC)

• Page 23
  Product Information MD320/MD320N User Manual Item Specifications Peripherals self- It can conduct safety detections on the peripherals upon detection upon power-on, including earth and short circuit detections. power-on Shared DC Bus It can realize the function that multiple inverters share the DC Function bus.

• Page 24: Physical Appearance And Dimensions Of Mounting Hole

  MD320/MD320N User Manual Product Information Item Specifications LED display It can display the parameters It is an optional part, and can display operation contents LED display Chinese/English. It enables the parameter copy unit to copy the parameters Parameter copy quickly. Key locking It can lock the keys partially or completely and define the Display and…

• Page 25
  Product Information MD320/MD320N User Manual Fig.2-4 Physical Appearance of Inverter Fig. 2-5 Schematic Diagram for Physical Dimensions and Mounting Dimensions of 0.4kW ～ 5.5kW…
• Page 26
  MD320/MD320N User Manual Product Information Fig. 2-6 Schematic Diagram for Physical Dimensions and Mounting Dimensions of 7.5kW～ 15kW Fig. 2-7 Schematic Diagram for Physical Dimensions and Mounting Dimensions of 18.5kW～ 450kW…
• Page 27
  Product Information MD320/MD320N User Manual Fig. 2-8 MD320N Series Schematic Diagram for Physical Dimensions and Mounting Dimensions of 18.5kW～450kW 2.5.2 Physical Dimensions and Mounting Hole Dimensions Table 2-3 Physical Dimensions and Mounting Hole Dimensions (mm) Mounting Diameter of Physical Dimensions mm Weight Hole mm Model…
• Page 28
  MD320/MD320N User Manual Product Information Mounting Diameter of Physical Dimensions mm Weight Hole mm Model Mounting (kg) Hole mm MD320T7.5GB MD320T11PB MD320T11GB ø6 MD320T15PB MD320T15GB MD320T18.5PB MD320T18.5G MD320T22P MD320T22G φ6.5 MD320T30P MD320T30G MD320T37P MD320T37G MD320T45P MD320T45G φ10 MD320T55P MD320T55G MD320T75P MD320T75G MD320T90P φ10…
• Page 29
  Product Information MD320/MD320N User Manual Mounting Diameter of Physical Dimensions mm Weight Hole mm Model Mounting (kg) Hole mm MD320T315G MD320T355P MD320T355G 1300 1203 1358 φ14 MD320T400P MD320T400G MD320T450P MD320-7T132GH MD320-7T160PH MD320-7T160GH MD320-7T200PH MD320-7T200GH 1166 1090 1192 φ10 MD320-7T220PH MD320-7T220GH MD320-7T250PH MD320-7T250GH MD320-7T280PH…
• Page 30
  MD320/MD320N User Manual Product Information Table 2-4 Physical Dimensions and Mounting Hole Dimensions (mm) Diameter Mounting Hole Physical Dimensions mm Weight Model Mounting (kg) Hole mm MD320NS0.4G MD320NS0.7G MD320NS1.5G MD320NS2.2G ø5.0 MD320NT0.7GB MD320NT1.5GB MD320NT2.2GB MD320NT3.7GB MD320NT5.5PB ø5.0 MD320NT5.5GB MD320NT7.5PB MD320NT7.5GB MD320NT11PB MD320NT11GB ø6…
• Page 31
  Product Information MD320/MD320N User Manual Diameter Mounting Hole Physical Dimensions mm Weight Model Mounting (kg) Hole mm MD320NT75G MD320NT90P Ø10 MD320NT90G MD320NT110P MD320NT110G MD320NT132P MD320NT132G Ø10 MD320NT160P MD320NT160G MD320NT200P MD320NT200G MD320NT220P MD320NT220G 1030 1060 Ø12 MD320NT250P MD320NT250G MD320NT280P MD320NT280G MD320NT315P MD320NT315G MD320NT355P MD320NT355G…
• Page 32
  MD320/MD320N User Manual Product Information 2.5.3 Physical Dimensions of External Keyboard 76.00 27.00 15.00 Plug Housing 10.00 Fig.2-9 Schematic Diagram for Physical Dimensions of External Keyboard Mounting Hole Dimensions of External Keyboard 73.50 63.75 4.70 9.75 Fig.2-10 Schematic Diagram for Mounting Hole Dimensions of External Keyboard…
• Page 33
  MD320T200P/200G 13*18 Ø15 /220P/220G/250P MD320T250G/280P 13*18 Ø15 /280G/315P MD320T315G/355P/ 355G/400P/400G 12*20 Ø14 /450P Caution:For special requirements, the user can customize non-standard products. *External DC reactor installation mode: MD320 series inverter of more than 75kW produced by Shenzhen Inovance Technology Co.,…

• Page 34: Optional Parts

  MD320/MD320N User Manual Product Information Ltd all employs standard external DC reactor, which is packed in independent wooden box and delivered together with the inverter. When mounting the inverter, the user needs to remove the short circuit bus between the terminals P and (+) of the main circuit of the inverter and then connect the DC reactor between P and (+).

• Page 35
  Product Information MD320/MD320N User Manual Name Model Function Remarks 15V power supply, Common PG card 1 MD32PG Rotary encoder interface card p u s h — p u l l o r o p e n c o l l e c t o r Rotary encoder interface card with Common PG card 2 MD32PGD…

• Page 36: Routine Repair And Maintenance Of Inverter

  MD320/MD320N User Manual Product Information 2.7 Routine Repair and Maintenance of inverter 2.7.1 Routine Repair The influence of the ambient temperature, humidity, dust and vibration will cause the aging of the devices in the inverter, which may cause potential fault of the inverter or reduce the service life of the inverter.

• Page 37: Instructions On Warranty Of Inverter

  Product Information MD320/MD320N User Manual 2.7.3 Replacement of Vulnerable Parts for Inverter The vulnerable parts of the inverter include cooling fan and filter electrolytic capacitor, whose service life depends on the operating environment and maintenance status. General service life is shown as follows: Part name Service Life 2 to 3 years…

• Page 38: Prototyping Guide

  MD320/MD320N User Manual Product Information The equipment is damaged because the user fails to comply with the requirements of the user’s manual; Damage caused by fire, flood and abnormal voltage; 3) Damage caused when the inverter is used for abnormal function. The service expenses will be calculated according to the standard of the manufacturer.

• Page 39
  Product Information MD320/MD320N User Manual inertia, speed-down time and energy of potential load. Thus, the user needs to select based on the actual needs. The higher the system inertia, the shorter the speed-down time required, and more frequent the brake is, and then it needs to select higher power and lower resistance vlaue for the brake resistor.
• Page 40
  MD320/MD320N User Manual Product Information Recommended Recommended Inverter Resistance Power of Brake Braking Unit Remarks Model Value of Brake Resistor Resistor MD320T18.5 1300W ≥25Ω The letter “B” is Built-in, MD320T22 1500W ≥22Ω attached behind optional the Inverter model. MD320T30 2500W ≥16Ω…
• Page 41
  Product Information MD320/MD320N User Manual…
• Page 42
  Mechanical and Electric Installation…

• Page 43: Chapter 3 Mechanical And Electric Installation

  Mechanical and Electric Installation MD320/MD320N User Manual Chapter 3 Mechanical and Electric Installation 3.1 Mechanical installation 3.1.1 Installation environment: 1) Ambient temperature: The ambient temperature exerts great influences on the service life of the inverter and is not allowed to exceed the allowable temperature range (-10 ℃ Celsius to 50 ℃…

• Page 44
  MD320/MD320N User Manual Mechanical and Electric Installation Mounting Dimension Power Level ≤15kW ≥100mm No requirements 18.5kW—30kW ≥200mm ≥50mm ≥37kW ≥300mm ≥50mm Fig.3-1 MD320 Inverter Installation Diagram 3.1.2 Heat dissipation shall be taken into account during the mechanical installation. Please pay attention the following items: Install the inverter vertically so that the heat may be expelled from the top.
• Page 45
  Mechanical and Electric Installation MD320/MD320N User Manual Fig.3-3 Removing the Down Cover Plate of Plastic Enclosure The MD series inverter of more than 18.5kW employs sheet-metal enclosure. Please refer to Figure 3-4 for removing the lower cover plate of the sheet-metal enclosure. It is easy to loosen the screws of the upper cover plate with tools.

• Page 46: Electrical Installation

  MD320/MD320N User Manual Mechanical and Electric Installation 3.2 Electrical Installation 3.2.1 Guide to the external electrical parts: Table 3-1 Guide to Prototyping of External Electrical Parts of MD320 Inverter Recommend- Recomm Recomme- -ended nded Circuit Recomm Conducting Conducting Conducting Breaker ended Inverter Model Wire of Main…

• Page 47
  150*4 MD320 7T*** Refer to parameters of rated current of 380V system alike. Caution: The electrical installation of MD320N series is the same as MD320 series. Table 3-2 Instruction for the Use of External Electrical Parts of MD320 Part Name…
• Page 48
  MD320/MD320N User Manual Mechanical and Electric Installation Part Name Mounting Location Function Description ● Improve the power factor of the input side; ● Eliminate the higher harmonics of the input side effectively and prevent other equipment AC input side of the inverter from damaging due to distortion of voltage reactor wave.
• Page 49
  Mechanical and Electric Installation MD320/MD320N User Manual 3.2.3 Connections Schematic Diagram for Single-phase Inverter Connection: Fig.3-5 Schematic Diagram for Single-phase Iinverter Connection Precautions are as follows: Terminal ◎refers to Main circuit terminal,Terminal ○ refers to control circuit terminal. There is 0.4kW~2.2kW Build-in brake unit optional. B which is followed the product model represents Self-braking unit.
• Page 50
  MD320/MD320N User Manual Mechanical and Electric Installation Schematic Diagram for Three-phase Inverter Connection: Fig. 3-6 Schematic Diagram for Three-phase Inverter Connection Precautions are as follows: 1. Terminal◎ refers to the main circuit terminal,Terminal ○ refers to the control circuit terminal. 2.
• Page 51
  Mechanical and Electric Installation MD320/MD320N User Manual 3.2.4 Main Circuit Terminals and Connections Danger Danger Make sure that the power switch is in OFF status prior to perform wiring connection. Otherwise there may be danger of electric shock! Only the qualified and trained personnel can perform wiring connection. Otherwise it may cause equipment and human injuries! It shall be earthed reliably.
• Page 52
  MD320/MD320N User Manual Mechanical and Electric Installation Largest Cable MD320 Size of Power Torque Terminal kgf.cm T3.7G 14±0.5 T5.5G/7.5P 14±0.5 Largest Cable MD320 Size of Power Torque Terminal kgf.cm T7.5G/11P 28±0.5 T11G/15P 28±0.5 T15G/18.5P 28±0.5 Fig.3-7Diagram for Driver main circuit power terminal 1)Instructions of main circuit terminals of single-phase inverter: Terminals Name…
• Page 53
  Mechanical and Electric Installation MD320/MD320N User Manual Terminals Name Description Input terminal of R、S、T three-phase power AC input single-phase power connection point supply Negative and positive Shared DC bus input point (connection point of (+)、(-) terminals of DC bus external brake unit of more than 37kW) Connecting terminal Connection point of Brake resistor of less than (+)、PB…
• Page 54
  MD320/MD320N User Manual Mechanical and Electric Installation The inverter output side cannot connect to the capacitor or surge absorber. Otherwise, it may cause frequent inverter protection and even damage the inverter. In case the motor cable is too long, it may generate electrical resonance easily due to the impact of distributed capacitance, thus damaging the motor insulation or generating higher leakage current to invoke over current protection of the inverter.
• Page 55
  Mechanical and Electric Installation MD320/MD320N User Manual Type Terminal Symbol Terminal Name Function Description Analog input 1 Input Voltage range: DC 0V to 10V AI1-GND terminal 1 2. Input resistance: 100kΩ 1. Input range: DC 0V ～ 10V/4mA ～ 20mA, which is determined by J3 jumper on the control Analog input board.
• Page 56
  MD320/MD320N User Manual Mechanical and Electric Installation Type Terminal Symbol Terminal Name Function Description Normally closed AC250V，3A，COSø=0.4. T/A-T/B terminal DC 30V，1A Contact driving capacity: Normally open AC250V, 3A, cosφ=0.4. T/A-T/C terminal DC 30V, 1A 28-core terminal and interface with optional Functional cards (I/O expansion card, multiple pump expansion card…
• Page 57
  Mechanical and Electric Installation MD320/MD320N User Manual B. Digital input terminal: It needs to employ shielded cable generally, with cable length of no more than 20 meters. When active driving is adopted, necessary filtering measures shall be taken to prevent the interference to the power supply.
• Page 58
  MD320/MD320N User Manual Mechanical and Electric Installation 2. Connection with dry contact sharing the positive pole Inve rte r Control Boa rd Inverter Control Board Fig.3-12 Connection with dry contact sharing the positive pole In this connection mode, it must remove the short circuit copper bar between +24V and OP and then connect OP with CME.
• Page 59
  Mechanical and Electric Installation MD320/MD320N User Manual This is one of the most commonly used connection mode. If external power supply is used, it must remove the short circuit copper bars between +24V and OP and between COM and CME respectively, and connect the positive pole of external power supply to OP and negative pole to CME.
• Page 60
  Operation and Display…

• Page 61: Chapter 4 Operation And Display

  Operation and Display MD320/MD320N User Manual Chapter 4 Operation and Display 4.1 Introduction to Operation and Display Interface With the operation panel, it can perform such operations on the inverter as function parameter modification, inverter working status monitoring and inverter running control (startup and stop). Refer to Fig.4-1 for the physical appearance and functional zone of the operation panel.

• Page 62: Description Of Function Code Viewing And Modification Methods

  MD320/MD320N User Manual Operation and Display RPM refers to the unit of rotation speed unit Digital display zone: Five-digit LED display, able to display setup frequency, output frequency, various monitoring data and alarm code. % refers to percentage Keyboard button description Table 4-1 Keyboard Function Button Name…

• Page 63: Shortcut Menu Operation Mode

  Operation and Display MD320/MD320N User Manual Parameter Set Function Code Function Code Modification Modification Modification ENTER ENTER 50.00 F0-08 050.00 PRG/ ENTER First-level menu Second-level menu Third-level menu Fig.4-2 Operation Procedure of Three-level Menu Caution: When operating on level 3 menu, press PRG key or ENTER key to return to level 2 menu.

• Page 64
  MD320/MD320N User Manual Operation and Display F0-01: Controm mode F0-02: Command source selection F0-03: Main frequency source selection F0-07: Frequency source selection F0-08: Preset frequency F0-17: Acceleration time F0-18: Deceleration time F3-00:V/F curve setup F3-01: Torque boost F4-00:DI1 terminal function selection F4-01:DI2 terminal function selection F4-02:DI3 terminal funciton selection F5-04:DO1 output selection F5-07:AO1 output selection…

• Page 65: Extended Function Menu

  Operation and Display MD320/MD320N User Manual Caution: In Stop or running display interface, press QUICK key to enter shortcut key, and select different shortcut parameters with UP/DOWN key. Then press ENTER key to enter next level of menu. At this time the modification method of shortcut parameter is the same as that of the parameters in common level 3 menu.

• Page 66: Password Setting

  MD320/MD320N User Manual Operation and Display When the inverter is restarted upon power shutdown, the displayed parameters are the parameters selected before the power shutdown. 4.6 Password Setting The inverter provides user password protection function. When FP-00 is set to non-zero value, it indicates the user password, and the password protection turns valid after exiting the function code editing status.

• Page 67
  Operation and Display MD320/MD320N User Manual The inverter measures rotor resistance, rotor resistance and leakage inductive reactance in sequence but does not measure the mutual inductive reactance and no-load current of the motor, which can be calculated by the user based on the motor nameplate. The motor nameplate parameters used in the calculation include rated voltage U, rated current l, rated frequency ƒ…
• Page 68
  Function Parameter Table…

• Page 69: Chapter 5 Function Parameter Table

  Function Parameter Table MD320/MD320N User Manual Chapter 5 Function Parameter Table If FP-00 is set to non-zero value, it means parameter protection password is set, and the parameter menu cannot be entered until correct password is input. To cancel the password, it needs to set FP-00 to “0”.

• Page 70
  MD320/MD320N User Manual Function Parameter Table Function Parameter Table Factory Function Minim- Modification Name LED display Set range default code um unit description value Group F0 Basic Function Group 1: G model (constant torque load model) Model F0-00 Model display Model display ●…
• Page 71
  Function Parameter Table MD320/MD320N User Manual Factory Function Minim- Modification Name LED display Set range default code um unit description value Auxiliary 0: Relative to maximum Frequency Y range frequency F0-05 source ☆ selection 1: Relative to frequency source Y range selection Auxiliary Auxiliary…
• Page 72
  MD320/MD320N User Manual Function Parameter Table Factory Function Minim- Modification Name LED display Set range default code um unit description value 0: Fixed PWM, carrier frequency temperature adjustment inactive 1: Random PWM, carrier Carrier Carrier frequency temperature frequency frequency adjustment inactive F0-16 ☆…
• Page 73
  Function Parameter Table MD320/MD320N User Manual Factory Function Minim- Modification Name LED display Set range default code um unit description value F2 Vector Control Parameters speed loop F2-00 proportional Speed loop P1 0～100 ☆ gain 1 speed loop F2-01 integration Speed loop l1 0.01s～10.00s 0.01s…
• Page 74
  MD320/MD320N User Manual Function Parameter Table Factory Function Minim- Modification Name LED display Set range default code um unit description value 0: Straight V/F curve V/F curve F3-00 V/F curve setup 1: Multiple-point V/F curve ★ setup 2: Square V/F curve F3-01 Torque boost Torque boost…
• Page 75
  Function Parameter Table MD320/MD320N User Manual Factory Function Minim- Modification Name LED display Set range default code um unit description value DI1 terminal DI1 terminal F4-00 function ★ selection selection DI2 terminal DI2 terminal F4-01 function ★ selection selection D13 terminal 0: No function DI3 terminal F4-02…
• Page 76
  MD320/MD320N User Manual Function Parameter Table Factory Function Minim- Modification Name LED display Set range default code um unit description value 20: Running command switching terminal 21: Acceleration/deceleration inactive22: PID Pause 23: PLC status reset 24: Swing frequency pause 25: Counter input26: Counter reset27: Length count input28: Length reset29: Torque control i n a c t i v e 3 0 : P U L S E ( p u l s e )
• Page 77
  Function Parameter Table MD320/MD320N User Manual Factory Function Minim- Modification Name LED display Set range default code um unit description value 38: PID integration pause terminal When this terminal is enabled, the PID integration action pauses, but the proportional adjustment and differential adjustment still has function.
• Page 78
  MD320/MD320N User Manual Function Parameter Table Factory Function Minim- Modification Name LED display Set range default code um unit description value AI2 minimum input AI2 minimum F4-19 -100.0%～100.0% 0.1% 0.0% ☆ correspondi- setup ng setup AI2 maximum AI2 maximum F4-20 0.00V～10.00V 0.01V 10.00V…
• Page 79
  Function Parameter Table MD320/MD320N User Manual Factory Function Minim- Modification Name LED display Set range default code um unit description value PULSE (pulse) input Pulse minimum F4-29 minimum -100.0%～100.0% 0.1% 0.0% ☆ frequency setup corresponding setup PULSE Pulse (pulse) input 0.01 F4-30 maximum…
• Page 80
  MD320/MD320N User Manual Function Parameter Table Factory Function Minim- Modification Name LED display Set range default code um unit description value FMR output FMR output 0: No output F5-01 ★ selection selection 1: Inverter is running 2: Fault output Control board Control board 3: Frequency level detection FDT relay (T/A-T/…
• Page 81
  Function Parameter Table MD320/MD320N User Manual Factory Function Minim- Modification Name LED display Set range default code um unit description value F5-11 AO1 gain AO1 gain -10.00～10.00 0.01 1.00 ☆ AO2 offset coefficient F5-12 (on IO AO offset -100.0%～100.0% 0.1% 0.0% ☆…
• Page 82
  MD320/MD320N User Manual Function Parameter Table Factory Function Minim- Modification Name LED display Set range default code um unit description value DC brake Brake waiting F6-12 waiting time at 0.0s～36.0s 0.1s 0.0s ☆ at stop stop DC brake DC brake F6-13 0%～100% ☆…
• Page 83
  Function Parameter Table MD320/MD320N User Manual Factory Function Minim- Modification Name LED display Set range default code um unit description value 1 Radiator Radiator F7-07 0.0℃～100℃ 1℃ ● temperature 1 temperature 1 Radiator Radiator F7-08 0.0℃～100℃ 1℃ ● temperature 2 temperature 2 Accumulated Accumulated…
• Page 84
  MD320/MD320N User Manual Function Parameter Table Factory Function Minim- Modification Name LED display Set range default code um unit description value Setup frequency Frequency 0: Run with frequency lower limit lower than F8-14 lower limit 1: Stop ☆ frequency action 2: Zero speed operation lower limit action…
• Page 85
  Function Parameter Table MD320/MD320N User Manual Factory Function Minim- Modification Name LED display Set range default code um unit description value Motor Overload overload F9-01 protection 0.20～10.00 0.01 1.00 ☆ protection coefficient gain Motor Overload overload F9-02 pre-warning 50%～100% ☆ pre-warning coefficient coefficient…
• Page 86
  MD320/MD320N User Manual Function Parameter Table Factory Function Minim- Modification Name LED display Set range default code um unit description value Output Output phase-failure 0: Inactive F9-13 phase-failure ☆ protection 1: Active selection selection 0: No fault The first fault 1 : I n v e r t e r u n i t p r o t e c t i o n F9-14 －…
• Page 87
  Function Parameter Table MD320/MD320N User Manual Factory Function Minim- Modification Name LED display Set range default code um unit description value Input terminal Input terminal F9-20 － － － ● upon fault upon fault Output Output F9-21 terminal upon terminal upon －…
• Page 88
  MD320/MD320N User Manual Function Parameter Table Factory Function Minim- Modification Name LED display Set range default code um unit description value Swing Swing FB-01 frequency frequency 0.0%～100.0% 0.1% 0.0% ☆ amplitude amplitude Kick Kick frequency FB-02 frequency 0.0%～50.0% 0.1% 0.0% ☆…
• Page 89
  Function Parameter Table MD320/MD320N User Manual Factory Function Minim- Modification Name LED display Set range default code um unit description value Negative maximum frequency to FC-09 MS speed 9 MS speed 9 0.1Hz 0.0Hz ☆ maximum frequency Negative maximum frequency to FC-10 MS speed 10 MS speed 10…
• Page 90
  MD320/MD320N User Manual Function Parameter Table Factory Function Minim- Modification Name LED display Set range default code um unit description value Second segment Second speed-up/ segment FC-23 0～3 ☆ speed-down speed-up/ time selection speed-down of PLC Third segment Third 0.1s FC-24 running time 0.0s(h)～6553.5s(h)
• Page 91
  Function Parameter Table MD320/MD320N User Manual Factory Function Minim- Modification Name LED display Set range default code um unit description value Seventh -segment Seventh speed-up/ -segment FC-33 0～3 ☆ speed-down speed-up/ time selection speed-down of PLC Eighth- segment Eighth 0.1s FC-34 0.0s(h)～6553.5s(h) 0.0s（h）…
• Page 92
  MD320/MD320N User Manual Function Parameter Table Factory Function Minim- Modification Name LED display Set range default code um unit description value Eleventh -segment Eleventh speed-up/ -segment FC-41 0～3 ☆ speed-down speed-up/ time selection speed-down of PLC Twelfth- segment Twelfth 0.1s FC-42 0.0s(h)～6553.5s(h) 0.0s（h）…
• Page 93
  Function Parameter Table MD320/MD320N User Manual Factory Function Minim- Modification Name LED display Set range default code um unit description value Running time Time unit 0: s(s) FC-50 ☆ of PLC selection 1: h(h) Group FD Communication Parameters 0：300BPS 1：600BPS 2：1200BPS 3：2400BPS FD-00…
• Page 94
  Parameter Description…

• Page 95: Chapter 6 Parameter Description

  Parameter Description MD320/MD320N User Manual Chapter 6 Parameter Description Group F0 Basic Function Model display Factory default value Model dependent F0-00 G model (constant torque load model) Setup range P model (fan and pump load model) This parameter is provided only for the user to view the factory default model and cannot be modified.

• Page 96
  2: serial port command channel (“LOCAL/REMOT” LED flashes) The running command is sent by the host computer via the communication mode. When selecting this item, it must be used together Modbus RTU of Shenzhen Inovance Technology Co., Ltd. Main frequency source X…
• Page 97
  Parameter Description MD320/MD320N User Manual keyboard (or UP and DOWN of multifunctional input terminals). “Recorded” means that the setup frequency upon restart of inverter due to power failure remains the same. 2:AI1 3:AI2 4:AI3 It means that the frequency is determined by the analog input terminal. Standard unit provides two analog input terminals, and optional I/O expansion card can provide one analog input terminal (Al3).
• Page 98
  MD320/MD320N User Manual Parameter Description Auxiliary Frequency source Factory default value Y selection Digital setup UP and DOWN (non-recorded) Digital setup UP and DOWN (recorded) F0-04 Setup Range PULSE setup (Dl5) MS speed Communication setup When the auxiliary frequency source is used as independent frequency reference channel (i.e. frequency source switching from X to Y”), it is used in the same way as the main frequency source X.
• Page 99
  Parameter Description MD320/MD320N User Manual When the frequency source selection is frequency overlap reference (F0-07 is set to 1 or 3), it is used to determine the adjustment range of auxiliary frequency source. F0-05 is used to determine the relative object of that range. If it is relative to maximum frequency X, that range will vary with the main frequency X.
• Page 100
  MD320/MD320N User Manual Parameter Description When the main frequency source is selected as “Digital setup” or “Terminals UP/DN”, this function code is the initial value of frequency digital setup of the inverter. Running direction Factory default value F0-09 Direction is consistent Setup Range Direction is reverse Through modifying this function code, it can change the rotary direction of the motor without…
• Page 101
  Parameter Description MD320/MD320N User Manual Its reference value is F0-12. The addition of offset frequency and analog setup value of frequency upper limit is used as the final setup value of frequency upper limit. Frequency lower limit Factory default value 0.
• Page 102
  MD320/MD320N User Manual Parameter Description Carrier frequency adjustment Factory default value selection Fixed PWM, and carrier frequency temperature adjustment inactive. Random PWM, and carrier frequency temperature F0-16 adjustment inactive. Setup range Fixed PWM, and carrier frequency temperature adjustment active. Random PWM, and carrier frequency temperature adjustment active.

• Page 103: Group F1 Motor Parameters

  Parameter Description MD320/MD320N User Manual There are totally four groups of acceleration/deceleration time for selection. Group 1: F0-17 and F0-18; Group 2: F8-03 and F8-04; Group 3: F8-05 and F8-06; Group 4: F8-07 and F8-08; It can select acceleration/deceleration time via the multifunctional digital input terminals (F4-00 to F4-08).

• Page 104
  MD320/MD320N User Manual Parameter Description Stator resistance Factory default value Model dependent F1-06 Setup range 0.001Ω~ 65.535Ω Rotor resistance Factory default value model dependent F1-07 Setup range 0.001Ω~ 65.535Ω Leakage inductive Factory default value model dependent F1-08 reactance Setup range 0.01mH ~ 655.35mH Mutual inductive Factory default value…
• Page 105
  Parameter Description MD320/MD320N User Manual Tuning operation description: When F1-11 is set to 1 or 2, press ENTER key and “TUNE” will be displayed and flashes. Press RUN key to conduct parameter tuning, and at this time the displayed “TUNE” stops flashing. After the tuning is completed, the display will return to the stop status interface.
• Page 106
  MD320/MD320N User Manual Parameter Description P a ra me te r Fre que ncy Comma nd Fig.6-2 Schematic diagram of PI parameter The speed dynamic response characteristics of the vector control can be adjusted by setting the proportional coefficient and integration time of the speed regulator. Increasing the proportional gain or reducing the integration time can accelerate the dynamic response of the speed loop.
• Page 107
  Parameter Description MD320/MD320N User Manual In the vector control mode, the output of speed loop regulator is torque current command. This parameter is used to filter the torque command. This parameter needs no adjustment generally and this filter time can be increased in case of huge speed fluctuation. In case of oscillation of motor, this parameter shall be reduced properly.

• Page 108: Group F3 V/F Control Parameters

  MD320/MD320N User Manual Parameter Description Torque upper limit source Factory default value F2-10 F2-09 Setup range PULSE setup Communication setup Torque upper limit Factory default value 150% F2-10 Setup range 0%~ 200% In the speed control mode, F2-09 is used to select the setup source of torque upper limit. When setting via the analog value, 100% of the analog input setup corresponds to F2-10, and the setup 100% corresponds to the rated torque of the motor matching the inverter.

• Page 109
  Parameter Description MD320/MD320N User Manual machine. 2: Square V/F curve. It is suitable for the centrifugal loads such as fan and pump. Torque boost Factory default value 1.0% F3-01 Setup range 0.0% ~ 30% Cutoff frequency of torque Factory default value 50.00Hz boost F3-02…
• Page 110
  MD320/MD320N User Manual Parameter Description V/F frequency F1 Factory default value 0.00Hz F3-03 Setup range 0.00Hz ~ rated motor frequency V/F voltage V1 Factory default value 0.0% F3-04 Setup range 0.0%~ 100.0% V/F frequency F2 Factory default value 0.00Hz F3-05 Setup range V1 ~ rated motor frequency V/F voltage V2…

• Page 111: Group F4 Input Terminal

  VF operation. Group F4 Input Terminal The standard unit of MD320 series inverter has five multifunctional digital input terminals (DI5 of which can be used as high-speed pulse input terminal) and two analog input terminals. If the system needs more input/output terminals, optional multifunctional input/output expansion card can be used.

• Page 112
  MD320/MD320N User Manual Parameter Description DI5 terminal function F4-04 Factory default value 13 (MS speed 2) selection DI6 terminal function F4-05 Factory default value selection DI7 terminal function F4-06 Factory default value selection DI8 terminal function F4-07 Factory default value selection DI9 terminal function F4-08…
• Page 113
  Parameter Description MD320/MD320N User Manual Setup Function Description value Terminal UP When the frequency is given by the external terminals, it is used as increment and decrement commands of frequency modification When the Terminal DOWN frequency source is set to digital setup, it can be used to adjust the setup frequency.
• Page 114
  MD320/MD320N User Manual Parameter Description Setup Function Description value When the frequency source selection (F0-07) is set to 2, it performs switching between main frequency source X and auxiliary frequency source Y via this terminal. When the frequency source selection (F0-07) is set to 3, it performs switching between main Frequency source switching frequency source X and (main frequency X plus…
• Page 115
  Parameter Description MD320/MD320N User Manual Setup Function Description value Counter input The input terminal of counting pulse. Counter reset Clear the counter status. Length count input Input terminal of length counting. Length reset Length clear Torque control inactive The torque control of inverter is inactive. PULSE (pulse) frequency It is pulse input terminal.
• Page 116
  MD320/MD320N User Manual Parameter Description Attached Table 2 MS Speed Function Description Speed-up/speed-down Terminal 2 Terminal 1 Corresponding Parameter time selection Speed-up time 1 F0-17 and F0-18 Speed-up time 2 F8-03, F8-04 Speed-up time 3 F8-05 and F8-06 Speed-up time 4 F8-07 and F8-08 DI filter time Factory default value…
• Page 117
  Parameter Description MD320/MD320N User Manual Running Commanc Stop Stop Forward Rotation Reverse Rotation Fig.6-6 Three-line Running Mode 2 2: Three-line running mode 1: In this mode, Dln is enabled terminal, and the direction is controlled by FWD and REV respectively. However, the pulse is enabled through disconnecting the signal of Dln terminal when the inverter stops.
• Page 118
  MD320/MD320N User Manual Parameter Description Where, SB1: Stop button SB2: Running button Dln is multifunctional input terminals of DI1 to DI5 (DI1 to DI10 if multifunctional input and output expansion card is selected). In this way, it shall define the corresponding terminal functions as No.3 function “Three-line Mode running Control”.
• Page 119
  Parameter Description MD320/MD320N User Manual Corre s ponding S e ttings (Fre que ncy, Torque , e tc.） Corre s ponding S e ttings (Fre que ncy, Torque , e tc.） Fig.6-9 Corresponding Relationship between Analog Reference and Setting AI2 minimum input Factory default value 0.00V F4-18…
• Page 120
  AI1 function. Group F5 Output Terminal The standard unit of MD320 series inverter has one multifunctional digital output terminals, one multifunctional relay output terminal, one FM terminal (can be used as either high-speed pulse output terminal or collector open output), and one multifunctional analog output terminal.
• Page 121
  Parameter Description MD320/MD320N User Manual output expansion card can be used. The multifunctional input and output expansion card has additional one multifunctional relay output terminal (relay 2), one multifunctional digital output terminal (DO2) and one multifunctional analog output terminal (AO2). FM terminal output mode Factory default value selection…
• Page 122
  MD320/MD320N User Manual Parameter Description Setup Function Description value Fault output When the inverter is faulty, it outputs ON signal. Frequenc-y level detection Please refer to F8-19 and F8-20 for details. FDT arrival Frequenc-y Please refer to F8-21 for details. arrival in zero speed When the inverter output frequency is less than the start…
• Page 123
  Parameter Description MD320/MD320N User Manual Setup Function Description value When the main circuit and control circuit power supply are Ready for connected, the inverter protection function is inactive, and the running inverter is in running status, it output ON signal. When the analog input AI1 value is higher than AI2 value, it AI1>AI2 outputs ON signal.
• Page 124
  MD320/MD320N User Manual Parameter Description Setup Function Range value Running frequency 0 to maximum output frequency Setup frequency 0 to maximum output frequency Output current 0 to 2 times of the motor rated current Output torque 0 to 2 times of the motor rated torque Output power 0 to 2 times rated power 0 to 1.2 times of the rated voltage of…

• Page 125: Group F6 Start/Stop Control

  Parameter Description MD320/MD320N User Manual It is generally used to correct the zero drift of the analog output and the output amplitude deviation. It can also be defined as any necessary output curve. For example, If the analog output is the running frequency, it is expected to output 8V(16mA) when the frequency is 0, and output 3V(6mA)at the maximum frequency, the gain shall be set to “-0.50”, and the zero offset shall be set to “80%”.

• Page 126
  MD320/MD320N User Manual Parameter Description Rotation speed tracking Factory default fastness and slowness value F6-02 Setup range 1~ 100 When it is in the mode of rotation speed tracking restart, select the fastness and slowness of the rotation speed tracking. The higher this parameter value is, the faster the tracking speed is. But too high value may result in unreliable tracking.
• Page 127
  0: Straight speed-up/speed-down The output frequency increases or decreases along the straight line. The speed-up/speed- down time varies with the setup acceleration/ deceleration time. The MD320 series inverter provides four types of speed-up/speed-down time. It can select speed-up/speed-down time via the multifunctional digital input terminals (F4-00 to F4-08).
• Page 128
  MD320/MD320N User Manual Parameter Description Acce le ra tion Time De ce le ra tion Time Fig.6-10 Schematic Diagram for S curve Acceleration/Deceleration Factory default Stop mode value F6-10 Speed-down to stop Setup range Free to stop 0: Speed-down to stop After the stop command is enabled, the inverter reduces the output frequency in accordance with the deceleration mode and the defined acceleration/deceleration time, and will stop after the frequency reduces to zero.
• Page 129
  Parameter Description MD320/MD320N User Manual DC brake beginning frequency at stop: During the acceleration to stop, when it reaches this frequency, the DC brake process at stop begins. DC brake waiting time at stop: Prior to the beginning of DC brake at stop, the inverter stops output and starts DC brake upon this delay.
• Page 130
  MD320/MD320N User Manual Parameter Description MF.K Key refers to multifunctional key. It can set and define the function of MF.K key on the keyboard via this parameter. It can perform switching via this key both in the stop and running process.
• Page 131
  Parameter Description MD320/MD320N User Manual L E D o p e r a t i o n d i s p l a y Factory default value parameter Setup F7-04 range： 65535 If the above parameters need to be displayed during the operation, set the corresponding positions to 1, and change the binary numbers into decimal numbers and set them in F7-01.
• Page 132
  MD320/MD320N User Manual Parameter Description Factory default Load speed display coefficient 1.000 value The output frequency of the F7-06 inverter and the load speed are Setup range 0.0001～6.5000 relative through this parameter. It is set when the load speed needs to be displayed. R a d i a t o r t e m p e r a t u r e o f Factory default inverter module…

• Page 133: Group F8 Auxiliary Function

  Parameter Description MD320/MD320N User Manual Software version No.2 Factory default value F7-11 Software version No. of the motor Setup range control board Group F8 Auxiliary Function Jog running Factory default 2.00Hz frequency value F8-00 0.00Hz ~ maximum frequency Setup range Factory default Jog speed-up time 20.00s…

• Page 134
  MD320/MD320N User Manual Parameter Description Factory default Speed-up time 4 20.00s value F8-07 Setup range 0.0s~ 6500.0s Factory default Speed-down time 4 20.00s F8-08 value Setup range 0.0s ~ 6500.0s Speed-up/speed-down time can select F0-17 and F0-18 and above three types of speed-up/ speed-down time.
• Page 135
  Parameter Description MD320/MD320N User Manual Forward/Reverse rotation Factory default 0.00s dead-zone time value F8-12 Setup range 0.00s~ 3000.0s During the setting of forward/reverse rotation of the inverter, the transition time at the output zero frequency position is shown in the following figure: Output Fre que ncy Forwa rd Rota tion RUNNING…
• Page 136
  MD320/MD320N User Manual Parameter Description When multiple inverters drive the same load, the unbalanced load distribution due to difference speed causes the inverter with faster speed to carry heavier load. The droop control characteristics cause the speed droop change along with the addition of load, which can lead to balanced load distribution.
• Page 137
  Parameter Description MD320/MD320N User Manual F r e q u e n c y d e t e c t i o n Factory default hysteresis 5.0% value F8-20 (FDT hysteresis) Setup range 0.0%~ 100.0%(FDT level) It is used to set the detection value of output frequency and hysteresis value upon removing of the output action.
• Page 138
  MD320/MD320N User Manual Parameter Description Earth short circuit protection Factory default detection upon power-on value F8-22 0:Inactive Setup range 1: Active It can select whether the inverter checks the motor for earth short circuit failure upon power-on. If this function is active, the inverter has short-time output at the instance of power-on. Running time to action Factory default selection…
• Page 139
  Parameter Description MD320/MD320N User Manual M o t o r o v e r l o a d p r e — w a r n i n g Factory default coefficient value The reference for this value is the motor overload current.
• Page 140
  MD320/MD320N User Manual Parameter Description Factory default Stall gain over current value It adjusts the inverter’s capacity in suppressing the stall over current. The bigger the value is, the stronger the suppressing capacity is. For the load with small inertia, F9-05 Setup the value should be small.
• Page 141
  Parameter Description MD320/MD320N User Manual Transient stop non-stop Factory default function value This function means that the inverter will not stop upon transient power failure. In case of transient power failure or sudden reduction in voltage, the inverter will F9-07 Setup 0:Inactive reduce the output speed and compensate…
• Page 142
  MD320/MD320N User Manual Parameter Description Input phase failure Factory default protection selection value Select whether to provide protection for input phase failure. Only the MD series F9-12 inverter of G model with over 18.5kW can 0:Inactive Setup range have input phase loss protection function, 1:Active and the P model with 18.5kW has not such function no matter whether F9-10 is…

• Page 143: Group Fa Process Control Pid Function

  Parameter Description MD320/MD320N User Manual This value is a decimal number. Display the status of all the digital input terminals upon fault for the most recent one time, with sequence of: BIT9 BIT8 BIT7 BIT6 BIT5 BIT4 BIT3 BIT2 BIT1 BIT0 Input terminal DI10……………………………………………………………

• Page 144
  MD320/MD320N User Manual Parameter Description arget Deviation Quantity Limit Feedback Quantity Fig. 6-15 Process PID Principle Framework PID reference source Factory default value FA-01 FA-00 Setup range PULSE (DI5) Communication setup When the frequency source selects PID, i.e. F0-03 or F0-04=8, this group of function is enabled.
• Page 145
  Parameter Description MD320/MD320N User Manual This parameter is used to select the PID reference channel. PID action direction Factory default value FA-03 Positive action Setup range Reverse action Positive action: When the feedback signal is higher than the PID reference, it needs to reduce the output frequency of the inverter to balance the PID.

• Page 146: Group Fb Swing Frequency, Fixed Length And Count

  MD320/MD320N User Manual Parameter Description Cutoff frequency of reverse Factory default value 2.00Hz rotation FA-08 Setup range 0.00 ~ maximum frequency Deviation limit Factory default value 0.01% FA-09 Setup range 0. 0%~ 100.0% Divation limit: When the PID feedback deviation is within this range, the PID stops adjustment; Differential amplitude Factory default value FA-10…

• Page 147
  Parameter Description MD320/MD320N User Manual Swing frequency amplitude Factory default value 0.0% FB-01 Setup range 0.0% to 100.0% Kick frequency amplitude 1 Factory default value 0.0% FB-02 Setup range 0.0% to 50.0% This parameter is used to determine the values of swing amplitude and kick frequency. The swing frequency is limited by the frequency upper limit and frequency lower limit.

• Page 148: Group Fc Ms Speed Function And Simple Plc Function

  MD320/MD320N User Manual Parameter Description The setup length, actual length and number of pulses each meter are mainly used for fixed length control. The length is calculated via the pulse signal input by the digital input terminal, and it needs to set the corresponding input terminal to length count input terminal.

• Page 149
  Parameter Description MD320/MD320N User Manual for details. When the frequency source selections F0-07, F0-03 and F0-04 are determined as MS speed running mode, it needs to set FC-00 to FC-15 to determine its characteristics. MS speed 0 Factory default value 0.0Hz FC-00 Setup range…
• Page 150
  MD320/MD320N User Manual Parameter Description MS speed 15 Factory default value 0.0Hz FC-15 Setup range Negative maximum frequency to maximum frequency When the frequency source parameters F0-07, F0-03 and F0-04 are determined as PLC running mode, it needs to set FC-00 to FC-15, FC-16, FC-17 and FC-18 to FC-49 to determine its characteristics.
• Page 151
  Parameter Description MD320/MD320N User Manual The inverter will automatically start next one cycle upon completion of one cycle, and will not stop until stop command is given. PLC power failure with memory means the running phase and frequency of PLC before power failure is memorized.
• Page 152
  MD320/MD320N User Manual Parameter Description Sixth-segment running time Factory default value 0.0s(h) of PLC FC-30 Setup range 0.0s(h)～6553.5s(h) Speed-up/speed-down time Factory default value of sixth-segment of PLC FC-31 Setup range 0～3 Seventh-segment running Factory default value 0.0s(h) time of PLC FC-32 Setup range 0.0s(h)～6553.5s(h)
• Page 153
  Parameter Description MD320/MD320N User Manual Speed-up/speed-down time Factory default value of twelfth-segment of PLC FC-43 Setup range 0～3 Thirteenth-segment running Factory default value 0.0s(h) time of PLC FC-44 Setup range 0.0s(h)～6553.5s(h) Speed-up/speed-down time Factory default value of thirteenth-segment of PLC FC-45 Setup range 0～3…

• Page 154: Group Fd Communication Parameters

  MD320/MD320N User Manual Parameter Description Group FD Communication Parameters Refer to MD320 Serial Communication Protocol for details. Group FF Factory Parameters (Reserved) Group FP User Password user password Factory default value FP-00 Setup range 0 to 65535 Any non-zero number can be set, and then the password protection function will be enabled. 000: Clear the previous setup user password and disable the password protection function.

• Page 155
  Parameter Description MD320/MD320N User Manual…
• Page 156
  EMC Guide…

• Page 157: Chapter 7 Emc (Electromagnetic Compatibility)

  EMC Guide MD320/MD320N User Manual Chapter 7 EMC (Electromagnetic Compatibility) 7.1 Definition Electromagnetic compatibility is the ability of the electric equipment to run in the electromagnetic interference environment and implement its function stably without interferences on the electromagnetic environment. 7.2 EMC Standard Description In accordance with the requirements of the national standard GB/T12668.3, the inverter needs to comply with electromagnetic interference and anti- electromagnetic interference requirements.

• Page 158
  MD320/MD320N User Manual EMC Guide The earth wires of the Inverter and other electric products shall be well grounded; The power input and output power cables of the inverter and weak current signal cables (e.g. control line) shall not be arranged in parallel and vertical arrangement is preferable. It is recommended that the output power cables of the inverter employ shield cables or steel pipe shielded cables and that the shielding layer be earthed reliably.
• Page 159
  EMC Guide MD320/MD320N User Manual The surrounding equipment is separately earthed, which can avoid the interference caused by the leakage current of the inverter’s earth wire when common earth mode is adopted. 7.3.5 Leakage current and handling There are two forms of leakage current when using the inverter. One is leakage current to the earth, and the other is leakage current between the cables.
• Page 160
  Fault Diagnosis and Solution…

• Page 161: Chapter 8 Fault Diagnosis And Solution

  Fault Diagnosis and Solution MD320/MD320N User Manual Chapter 8 Fault Diagnosis and Solution 8.1 Fault Alarm and Countermeasures MD320 inverter has 24 pieces of warning information and protection function. In case of abnormal fault, the protection function will be invoked, the inverter will stop output, and the faulty relay contact of the inverter will start, and the fault code will be displayed on the display panel of the inverter.

• Page 162
  MD320/MD320N User Manual Fault Diagnosis and Solution Acce le ra tion ove r curre nt Che ck if the output loop of the Ye s P e rform trouble s hooting inve rte r is e a rthe d or s hort circuite d If the motor pa ra me te rs a re ide ntifie d Ide ntify the motor pa ra me te rs V/F Mode…
• Page 163
  Fault Diagnosis and Solution MD320/MD320N User Manual De ce le ra tion ove r curre nt Ye s Che ck if the output loop of the P e rform trouble s hooting inve rte r is e a rthe d or s hort circuite d Ide ntify the motor pa ra me te rs If the motor pa ra me te rs a re ide ntifie d V/F Mode…
• Page 164
  MD320/MD320N User Manual Fault Diagnosis and Solution Cons ta nt S pe e d ove r Curre nt P e rform trouble s hooting, a nd ins ta ll Ye s Che ck if the output loop of the inve rte r is output re a ctor if the line is too long s hort circuite d or ha s le a ka ge curre nt Ide ntify the motor pa ra me te rs…
• Page 165
  Fault Diagnosis and Solution MD320/MD320N User Manual Acce le ra tion ove r Volta ge Ye s If the input volta ge is too high Adjus t the volta ge to norma l ra nge If the re a re e xte rna l force s Ye s Re move the e xte rna l force s driving the motor to run during…
• Page 166
  MD320/MD320N User Manual Fault Diagnosis and Solution De ce le ra tion ove r volta ge Ye s If the input volta ge is too high Adjus t the volta ge to norma l ra nge f the re a re e xte rna l force s Ye s Re move the e xte rna l force s driving the motor to run during…
• Page 167
  Fault Diagnosis and Solution MD320/MD320N User Manual Control powe r s upply Ｎo Adjus t the volta ge to the ra nge a s If the input volta ge is within the ra nge s pe cifie d by the s pe cifica tions a s s pe cifie d by the s pe cifica tions As k for te chnica l s upport Fig.8-8 Control power supply fault(ERR08)
• Page 168
  MD320/MD320N User Manual Fault Diagnosis and Solution Inve rte r Ove rloa d Motor ove rloa d If the motor prote ction pa ra me te r S e t this pa ra me te r prope rly F9-01 is s e t prope rly Ye s Ye s Re duce the loa d a nd che ck…
• Page 169
  Fault Diagnosis and Solution MD320/MD320N User Manual Phase loss failure at the output side Err13 Check if the cable connecting the Perform troubleshooting inverter to the motor is normal Check if the three-phase Check if the three -phase output of the running winding of the motor is inverter without motor is balanced Ask for technical support…
• Page 170
  MD320/MD320N User Manual Fault Diagnosis and Solution Exte rna l e quipme nt fa ult Ye s If it is s toppe d by pre s s ing the S TOP ke y Reset to run in the non-ke yboa rd ope ra tion mode Ye s If it inputs e xte rna l fa ult s igna l via Che ck a nd re move…
• Page 171
  Fault Diagnosis and Solution MD320/MD320N User Manual Contactor Fault Err17 Replace the control board Check if the control board and power or power supply supply is normal Replace the contactor Check if the contactor is normal Fig.8-16 Contactor fault (Err17) Current detection fault Ask for technical support Replace the hall device…
• Page 172
  MD320/MD320N User Manual Fault Diagnosis and Solution Motor tuning fa ult If the motor pa ra me te rs a re s e t a s S e t the motor pa ra me te rs corre ctly pe r the motor na me pla te Ye s Che ck the ca ble conne cting If the pa ra me te r ide ntifica tion…
• Page 173
  Fault Diagnosis and Solution MD320/MD320N User Manual Data Overflow Ask for technical support If it is normal after replacing the Main control board fault main control board Fig.8-20 Data overflow (ERR21) Inverter hardware fault Remove over voltage fault If it is over voltage If it is over current Remove over current fault Fig.8-21 Inverter hardware fault(ERR22)

• Page 174: Common Fault And Resolution

  MD320/MD320N User Manual Fault Diagnosis and Solution 8.2 Common Fault and Resolution During the inverter using process, the following faults may occur. Please conduct simple fault analysis by referring to the methods below: Table8-1 Common Fault and Resolution Fault Phenomenon Possible Cause Solution The inverter has no input…

• Page 175
  Fault Diagnosis and Solution MD320/MD320N User Manual Fault Phenomenon Possible Cause Solution The parameter is set Check and reset Group F4 wrongly. related parameters. The short circuit copper bar DI terminal disabled Reconnect the cables. between OP and +24V is Consult the manufacturer.
• Page 176
  Appendix…

• Page 177: Appendix: Card Description

  A.1 Model and Specifications A.1.1 Model Shenzhen Inovance Technology Co., Ltd provides two kinds of PG card matching the MD320 inverter. Refer to Appendix A: Table 1 PG Card Model Description for details. Appendix A: Table 1 PG Card Model Description…

• Page 178
  MD320/MD320N User Manual Appendix Toggle Switch Appendix A: Fig.2 PG Card Dimension Appendix A: Fig.3 PG Card Terminal Definition A.2 Instruction for use A.2.1 Function It must select PG card when the user has needs for speed sensor vector control. The standard configurations of the PG card include processing circuits of two orthogonal encoder signals, encoder signal able to receive open collector output or push-pull collector output, and encoder power supply (fixed at +15V output).
• Page 179
  Appendix MD320/MD320N User Manual can be determined by multiplying its binary number with 2. “1” on the toggle switch is the binary lower bit, while “5” is the higher bit. When the toggle switch is switched to ON, the bit is enabled and indicates “1”…
• Page 180
  MD320/MD320N User Manual Appendix 2. Schematic Diagram for Frequency Division Interface Fre que ncy divis ion S che ma tic Dia gra m Appendix A: Fig.5 Schematic Diagram for Frequency Division Interface A.2.4 Precautions The PG card signal cables and the power cables shall be arranged separately, and parallel wiring is not allowed;…
• Page 181
  Appendix MD320/MD320N User Manual P G Ca rd Ope n colle ctor output code S hie lde d ca ble Appendix A: Fig.6 Schematic Diagram for the Connection of Collector Output Encoder 2. Schematic Diagram for the Connection of Push-Pull Output Encoder P G Ca rd Ope n colle ctor output code S hie lde d ca ble…

• Page 182: Appendix B: Description Of Long-Line Drive Pg Card (Md32Pg3)

  Appendix Appendix B: Description of Long-line Drive PG Card (MD32PG3) This PG card is connected to the adapter of Inovance inverter as differential encoder. It can be applied in the situation with synchronous motor and induction motor close loop control.

• Page 183: Appendix C: Description Of Io Expansion Card (Md32Io)

  Appendix C: Description of IO Expansion Card (MD32IO) C.1 Overview MD32IO card is I/O expansion card launched by Shenzhen Inovance Technology Co., Ltd to support the use of MD320 series inverter. It can add five digital inputs, one analog voltage signal input, one relay signal output, one digital signal output and one analog signal output.

• Page 184
  MD320/MD320N User Manual Appendix Loca ting hole Thre e Expa ns ion Mounting hole ca rd inte rfa ce 83mm 83mm 80mm 80mm Appendix C: Fig.2 Physical Dimensions 0-10V 0/4-20mA Appendix C: Fig.3 Jumper Terminal C.2.2 Description of Control Terminal Function:…
• Page 185
  Appendix MD320/MD320N User Manual Appendix C: Table 1 Control Terminal Function Terminal Terminal Type Function description Symbol name Provide +10V power supply for external units, with maximum output current of 10mA. It is generally used as the operating power +10V-GND +10V-GND supply for the external potentiometer.
• Page 186
  (RELAY 2) Normally AC250V, 3A, COSφ=0.4. P/A- P/C open terminal DC 30V, 1A Communi- Communi- The input/output signal terminal for RS-485 cation cation communication terminal Auxiliary Control panel 28-core terminal, connecting to control board interface interface of MD320 series inverter…

• Page 187: Appendix D: Description Of Communication Card (Md32Mbs)

  Refer to MD320 Serial Communication Protocol for the details regarding the communication card, which is available on the website of www.inovance.cn or from the local representative office or agent. Description of RS-232 communication card: The physical structure and connecting mode are as shown in Appendix D: Fig.1 Physical Structure and Connecting Mode, while RJ45 interface…

• Page 188
  MD320/MD320N User Manual Appendix WGND RS232-TXD RS232-RXD Appendix D: Fig.2 RS-232 Signal Definition Description of RS-485 communication card: The physical structure and connecting mode are as shown in the following figure. RS-485 communication mode provides two types of connections, which are mutually connected. The user can freely select the communication line connections based on the actual needs.

• Page 189: Appendix E: Description Of Parameter Copy Card (Mdcp)

  Appendix MD320/MD320N User Manual the twisted-pair cables be employed for the communication connection and parallel cables be avoided as much as possible. 2) It is preferable to select the shielded cable as RS-232 signal cable. Appendix E: Description of Parameter Copy Card (MDCP) E.1 Schematic Diagram for Parameter Copy Keyboard E.2 Definition of Parameter Copy Card Up-upload parameter: It is to upload the parameters in the parameter copy keyboard to the…

• Page 190: Appendix F: Md320 Serial Communication Protocol

  1.61 or if the connecting cable is loosen, and repeat the parameter download or upload. Appendix F MD320 serial communication protocol MD320 series of inverter provides RS232/RS485 communication interface, and adopts MODBUS communication protocol.User can carry out centralized monitoring through PC/PLC to get operating requirements.

• Page 191
  F.5 Communication data structure ModBus protocol communication data format of MD320 series of inverter is shown as following: (In RTU mode, messages start with a interval of at least 3.5 character times. This is most easily implemented as a multiple of character times at the baud rate that is being used on the network (shown as T1-T2-T3-T4 in the figure below).
• Page 192
  MD320/MD320N User Manual Appendix CRC CHK High Order Detection Value: CAC value CRC CHK Low order 3.5-character time Command code: 03H reads N words. (There are 12 characters can be read at the most.) For example: The inverter start address F002 of the slave 01 continuously reads two consecutive values.
• Page 193
  Appendix MD320/MD320N User Manual The Number of byte Data F002H high order Data F002H low order Data F003H high order Data F003H low order CRC CHK low order CRC CHK values are to be calculated CRC CHK high order Command Code:06H,write a word For example:Write 5000(1388H)into F00AH which slave address is 02H.
• Page 194
  MD320/MD320N User Manual Appendix and compares the calculated value to the actual value it received in the CRC field. If the two values are not equal, an error results. The CRC is started by 0xFFFF.Then a process begins of applying successive eight-bit bytes of the message to the current contents of the register.
• Page 195
  Appendix MD320/MD320N User Manual return(crc_value); The chapter is about communication contents, it’s used to control the inverter operation, the status of the inverter and related parameter setup. Read and write function-code parameters (Some functional code is not changed, only for the manufacturer use.) The mark rules of Function code parameters address: The group number and mark of function code is the parameter address for indicating the rules.
• Page 196
  MD320/MD320N User Manual Appendix Parameter addr. Parameter description 1000 Communication setup value(-10000 to 10000)( Decimal) 1001 Running frequency 1002 Bus voltage 1003 Output voltage 1004 Output voltage 1005 Output power 1006 Output torque 1007 Running speed 1008 DI input flag 1009 DO output flag 100A…
• Page 197
  Appendix MD320/MD320N User Manual Command Word Command Function Address 0001：Forward operation 0002：Reverse operation 0003：Forward jog 2000 0004：Reverse jog 0005：Free stop 0006：Speed-down stop 0007：Fault reset Read inverter status read-only) Status Sord Address Status Word Function 0001：Forward operation 3000 0002：Reverse operation 0003：Stop Parameters locking password checksum: (If the return is the 8888H, it indicates the password checksum pass)
• Page 198
  MD320/MD320N User Manual Appendix Analog output AO1 control: (write-only) Address of locking Contents of locking password command password command 7000 0～7FFF refers to 0％ to 100.00％ Analog output AO2 control: (write-only) Locking password Locking password command contents command address 9000 0～7FFF refers to 0％…
• Page 199
  Appendix MD320/MD320N User Manual Inverter fault Inverter fault information address 0000：No fault 0001：Inverter unit protection 0002：Speed-up over current 0003：Speed-down over current 0004：Constant over current 0005：Speed-up over voltage 0006：Speed-down over voltage 0007：Constant over voltage 0008：Control power supply fault 0009：Under voltage fault 8000 000A：Inverter overload 000B：Motor overload…
• Page 200
  MD320/MD320N User Manual Appendix Group FD Communication parameter description Baud rate Factory default value 300BPS 600BPS 1200BPS FD-00 2400BPS Setup range 4800BPS 9600BPS 19200BPS 38400BPS This parameter is used to set the the data transfer rate between host computer and the inverter. Please note that baud rate of the host computer and the inverter must be consistent.Otherwise, communication is impossible.
• Page 201
  Appendix MD320/MD320N User Manual When the function set to 0.0 s, the communication timeout parameter is inactive. When the function code set to RMS, if the interval time between the communication and the next communication is beyond the communication timeout, the system will report communication failure error (Err16).At normal circumstances, it will be set as inactive.
• Page 202
  6. If there is any problem during the service, please contact the agent of our company or our company directly. 7. This agreement shall be interpreted by Shenzhen Inovance Technology Co., Ltd. Shenzhen Inovance Technology Co., Ltd. Service Department Address: Block E, Hongwei Industry Park, Liuxian Road, Baocheng No.
• Page 203
  Product Warranty Card Add. of unit: Name of unit: Contact person: Customer P.C.: information Tel.: Product model: Body barcode (Attach here): Product information Name of agent (Attach here): (Maintenance time and content): Failure information Maintenance personnel:…

Quick Links

• Page 2: Preface

  MD320/MD320N User Manual Preface Preface Thank you for purchasing MD320/MD320N series inverters. This instruction manual describes how to properly use MD320/MD320N series inverter. Please read the instruction manual carefully before using(Before installation,operation,maintenance and inspection).Besides, please use the product after understanding the safety precautions. Precautions The drawings presented in this instructions are sometimes shown without …

• Page 3
  Preface MD320/MD320N User Manual Introduction The MD series of frequency converters is a new generation of modular, high performance frequency converters that represent the future of inverters. Compared with traditional inverters, in meeting the performance and function demands of customers, this series does not use multiple products (which add external manufacturing, sales, user and maintenance costs), but instead creates a modular design based on the specific needs of the customer, resulting in a customized platform that incorporates a single series of products that are a multi-module…
• Page 4
  PID control, MS speed, and swing frequency and so on. According to the degree of complexity of functions, Inovance Technology provides two sub-modules for options of the customers, that is, MD320 functional module and MD300 functional module.
• Page 5
  Preface MD320/MD320N User Manual 3) The top-layer module of MD series inverter is a specialized industry module and also a platform provided to satisfy the specialized industry demands, enabling the customers to either apply the existing solutions or perform secondary development according to their own needs.
• Page 6
  Article 7.3.2 and 7.3.6) MD320N: MD320N series is an upgrade of the MD320 series in terms of external appearance and structural design. Its function is the same as MD320 series inverters. The difference between MD320N series inverter and MD320 series inverter are as follows: MD320N series inverter’s enclosure are divided into three parts, it contains top- enclosure,…

• Page 7: Table Of Contents

  Contents Preface ……………….1 Chapter 1 Safety and Precautions……….10 1.1 Safety precautions………………….10 1.2 Precautions……………………13 Chapter 2 Product Information……….18 2.1 Designation Rules………………….18 2.2 Nameplate……………………..18 2.3 MD320 Inverter Series………………….19 2.4 Technical Specifications…………………21 2.5 Physical Appearance and Dimensions of Mounting Hole………..23 2.6 Optional Parts……………………33 2.7 Routine Repair and Maintenance of inverter…………..35 2.8 Instructions on Warranty of Inverter………………36 2.9 Prototyping Guide…………………..37…

• Page 8: Table Of Contents

  Group F1 Motor Parameters………………..102 Group F3 V/F Control Parameters………………107 Group F4 Input Terminal………………….110 Group F6 Start/Stop Control………………..124 Group F8 Auxiliary Function………………..132 Group FA Process Control PID Function……………..142 Group FB Swing Frequency, Fixed Length and Count…………145 Group FC MS Speed Function and Simple PLC Function…………147 Group FD Communication Parameters……………….153 Group FF Factory Parameters (Reserved)…………….153 Group FP User Password………………….153…

• Page 9
  Brake Unit （ or Energy Feedback Unit ） (Optional) Noise Filter It can give full play to the regenerative capacity of the inverter, please use according to needs. Inovance Inverter DC Reactor (standard configuration) Grounding In order to prevent electric shock, the motor and inverter must be well grounded.
• Page 10
  Safety and Precautions…

• Page 11: Chapter 1 Safety And Precautions

  Safety and Precautions MD320/MD320N User Manual Chapter 1 Safety and Precautions Safety defi nition: In this manual, safety precautions are divided into two types below: Danger arising due to improper operations may cause severe hurt or even death. Danger arising due to improper operations may cause severe hurt or even death. Caution: Danger arising due to improper operations may cause moderate hurt or light hurt Caution: Danger arising due to improper operations may cause moderate hurt or light hurt or equipment damage.

• Page 12
  MD320/MD320N User Manual Safety and Precautions Caution Do not drop the lead wire stub or screw in the inverter. Otherwise it may  damage the inverter. Please install the driver in the place where there is no direct sunlight or no …
• Page 13
  Safety and Precautions MD320/MD320N User Manual 1.1.4 Before Power-on: Caution Please confi rm whether the power voltage class is consistent with the rated  voltage of the inverter and whether the I/O cable connecting positions are correct, and check whether the external circuit is short circuited and whether the connecting line is fi rm.

• Page 14: Precautions

  MD320/MD320N User Manual Safety and Precautions 1.1.6 During the operation: Danger Do not touch the fan or discharge resistor to sense the temperature.  Otherwise, you may get burnt! Detection of signals during the operation shall only be conducted by …

• Page 15
  Safety and Precautions MD320/MD320N User Manual power of the inverter is higher than the rated power of the motor, the relevant motor protection parameters in the in the inverter shall be adjusted, or thermal relay shall be mounted to protect the motor.
• Page 16
  MD320/MD320N User Manual Safety and Precautions 1.2.10 Lightning Impulse Protection The series inverter has lightning over current protection device, and has certain self-protection capacity against the lightning. In applications where lightning occurs fre quently, the user shall install additional protection devices at the front-end of the inverter. 1.2.11 Altitude and Derating In areas with altitude of more than 1,000 meters, the heat sinking effect of the inverter may turn poorer due to rare air.
• Page 17
  Safety and Precautions MD320/MD320N User Manual…
• Page 18
  Product Information…

• Page 19: Chapter 2 Product Information

  0.4 0.75 …… 11 15 Fig.2-1 Designation Rules Caution: The MD320N series is an upgrade of the MD320 series in terms of external appearance and structural design. Except for special notes on the MD320N, all the following information is appropriate for the MD320N series of products.

• Page 20: Md320 Inverter Series

  MD320/MD320N User Manual Product Information 2.3 MD320 Inverter Series Table 2-1 MD320 Inverter Model and Technical Data Power Input Output Adaptable Motor Inverter model capacity current current (kW) (kVA) Single-phase power supply: 200…240V，50/60Hz MD320NS0.4 MD320NS0.7 0.75 MD320NS1.5 14.0 MD320NS2.2 23.0 Three-phase power supply: 380…480V，50/60Hz MD320NT0.7 0.75…

• Page 21
  Product Information MD320/MD320N User Manual Power Input Output Adaptable Motor Inverter model capacity current current (kW) (kVA) MD320NT160 231.0 307.0 304.0 MD320NT200 250.0 385.0 377.0 MD320NT220 280.0 430.0 426.0 MD320NT250 355.0 468.0 465.0 MD320NT280 396.0 525.0 520.0 MD320NT315 445.0 590.0 585.0 315.0 MD320NT355…

• Page 22: Technical Specifications

  MD320/MD320N User Manual Product Information 2.4 Technical Specifications Table 2-2 MD320 Inverter Technical Specifications Item Specifications Maximum 300Hz frequency Carrier 0.5k to 16kHz; the carrier frequency will be automatically frequency adjusted according to the load characteristics. Input frequency Digital setting: 0.01Hz resolution Analog setting: maximum frequency ×0.1% Open loop vector control (SVC)

• Page 23
  Product Information MD320/MD320N User Manual Item Specifications Peripherals self- It can conduct safety detections on the peripherals upon detection upon power-on, including earth and short circuit detections. power-on Shared DC Bus It can realize the function that multiple inverters share the DC Function bus.

• Page 24: Physical Appearance And Dimensions Of Mounting Hole

  MD320/MD320N User Manual Product Information Item Specifications LED display It can display the parameters It is an optional part, and can display operation contents LED display Chinese/English. It enables the parameter copy unit to copy the parameters Parameter copy quickly. Key locking It can lock the keys partially or completely and define the Display and…

• Page 25
  Product Information MD320/MD320N User Manual Fig.2-4 Physical Appearance of Inverter Fig. 2-5 Schematic Diagram for Physical Dimensions and Mounting Dimensions of 0.4kW ～ 5.5kW…
• Page 26
  MD320/MD320N User Manual Product Information Fig. 2-6 Schematic Diagram for Physical Dimensions and Mounting Dimensions of 7.5kW～ 15kW Fig. 2-7 Schematic Diagram for Physical Dimensions and Mounting Dimensions of 18.5kW～ 450kW…
• Page 27
  Product Information MD320/MD320N User Manual Fig. 2-8 MD320N Series Schematic Diagram for Physical Dimensions and Mounting Dimensions of 18.5kW～450kW 2.5.2 Physical Dimensions and Mounting Hole Dimensions Table 2-3 Physical Dimensions and Mounting Hole Dimensions (mm) Mounting Diameter of Physical Dimensions mm Weight Hole mm Model…
• Page 28
  MD320/MD320N User Manual Product Information Mounting Diameter of Physical Dimensions mm Weight Hole mm Model Mounting (kg) Hole mm MD320T7.5GB MD320T11PB MD320T11GB ø6 MD320T15PB MD320T15GB MD320T18.5PB MD320T18.5G MD320T22P MD320T22G φ6.5 MD320T30P MD320T30G MD320T37P MD320T37G MD320T45P MD320T45G φ10 MD320T55P MD320T55G MD320T75P MD320T75G MD320T90P φ10…
• Page 29
  Product Information MD320/MD320N User Manual Mounting Diameter of Physical Dimensions mm Weight Hole mm Model Mounting (kg) Hole mm MD320T315G MD320T355P MD320T355G 1300 1203 1358 φ14 MD320T400P MD320T400G MD320T450P MD320-7T132GH MD320-7T160PH MD320-7T160GH MD320-7T200PH MD320-7T200GH 1166 1090 1192 φ10 MD320-7T220PH MD320-7T220GH MD320-7T250PH MD320-7T250GH MD320-7T280PH…
• Page 30
  MD320/MD320N User Manual Product Information Table 2-4 Physical Dimensions and Mounting Hole Dimensions (mm) Diameter Mounting Hole Physical Dimensions mm Weight Model Mounting (kg) Hole mm MD320NS0.4G MD320NS0.7G MD320NS1.5G MD320NS2.2G ø5.0 MD320NT0.7GB MD320NT1.5GB MD320NT2.2GB MD320NT3.7GB MD320NT5.5PB ø5.0 MD320NT5.5GB MD320NT7.5PB MD320NT7.5GB MD320NT11PB MD320NT11GB ø6…
• Page 31
  Product Information MD320/MD320N User Manual Diameter Mounting Hole Physical Dimensions mm Weight Model Mounting (kg) Hole mm MD320NT75G MD320NT90P Ø10 MD320NT90G MD320NT110P MD320NT110G MD320NT132P MD320NT132G Ø10 MD320NT160P MD320NT160G MD320NT200P MD320NT200G MD320NT220P MD320NT220G 1030 1060 Ø12 MD320NT250P MD320NT250G MD320NT280P MD320NT280G MD320NT315P MD320NT315G MD320NT355P MD320NT355G…
• Page 32
  MD320/MD320N User Manual Product Information 2.5.3 Physical Dimensions of External Keyboard 76.00 27.00 15.00 Plug Housing 10.00 Fig.2-9 Schematic Diagram for Physical Dimensions of External Keyboard Mounting Hole Dimensions of External Keyboard 73.50 63.75 4.70 9.75 Fig.2-10 Schematic Diagram for Mounting Hole Dimensions of External Keyboard…
• Page 33
  MD320T200P/200G 13*18 Ø15 /220P/220G/250P MD320T250G/280P 13*18 Ø15 /280G/315P MD320T315G/355P/ 355G/400P/400G 12*20 Ø14 /450P Caution:For special requirements, the user can customize non-standard products. *External DC reactor installation mode: MD320 series inverter of more than 75kW produced by Shenzhen Inovance Technology Co.,…

• Page 34: Optional Parts

  MD320/MD320N User Manual Product Information Ltd all employs standard external DC reactor, which is packed in independent wooden box and delivered together with the inverter. When mounting the inverter, the user needs to remove the short circuit bus between the terminals P and (+) of the main circuit of the inverter and then connect the DC reactor between P and (+).

• Page 35
  Product Information MD320/MD320N User Manual Name Model Function Remarks 15V power supply, Common PG card 1 MD32PG Rotary encoder interface card p u s h — p u l l o r o p e n c o l l e c t o r Rotary encoder interface card with Common PG card 2 MD32PGD…

• Page 36: Routine Repair And Maintenance Of Inverter

  MD320/MD320N User Manual Product Information 2.7 Routine Repair and Maintenance of inverter 2.7.1 Routine Repair The influence of the ambient temperature, humidity, dust and vibration will cause the aging of the devices in the inverter, which may cause potential fault of the inverter or reduce the service life of the inverter.

• Page 37: Instructions On Warranty Of Inverter

  Product Information MD320/MD320N User Manual 2.7.3 Replacement of Vulnerable Parts for Inverter The vulnerable parts of the inverter include cooling fan and filter electrolytic capacitor, whose service life depends on the operating environment and maintenance status. General service life is shown as follows: Part name Service Life 2 to 3 years…

• Page 38: Prototyping Guide

  MD320/MD320N User Manual Product Information The equipment is damaged because the user fails to comply with the requirements of the user’s manual; Damage caused by fire, flood and abnormal voltage; 3) Damage caused when the inverter is used for abnormal function. The service expenses will be calculated according to the standard of the manufacturer.

• Page 39
  Product Information MD320/MD320N User Manual inertia, speed-down time and energy of potential load. Thus, the user needs to select based on the actual needs. The higher the system inertia, the shorter the speed-down time required, and more frequent the brake is, and then it needs to select higher power and lower resistance vlaue for the brake resistor.
• Page 40
  MD320/MD320N User Manual Product Information Recommended Recommended Inverter Resistance Power of Brake Braking Unit Remarks Model Value of Brake Resistor Resistor MD320T18.5 1300W ≥25Ω The letter “B” is Built-in, MD320T22 1500W ≥22Ω attached behind optional the Inverter model. MD320T30 2500W ≥16Ω…
• Page 41
  Product Information MD320/MD320N User Manual…
• Page 42
  Mechanical and Electric Installation…

• Page 43: Chapter 3 Mechanical And Electric Installation

  Mechanical and Electric Installation MD320/MD320N User Manual Chapter 3 Mechanical and Electric Installation 3.1 Mechanical installation 3.1.1 Installation environment: 1) Ambient temperature: The ambient temperature exerts great influences on the service life of the inverter and is not allowed to exceed the allowable temperature range (-10 ℃ Celsius to 50 ℃…

• Page 44
  MD320/MD320N User Manual Mechanical and Electric Installation Mounting Dimension Power Level ≤15kW ≥100mm No requirements 18.5kW—30kW ≥200mm ≥50mm ≥37kW ≥300mm ≥50mm Fig.3-1 MD320 Inverter Installation Diagram 3.1.2 Heat dissipation shall be taken into account during the mechanical installation. Please pay attention the following items: Install the inverter vertically so that the heat may be expelled from the top.
• Page 45
  Mechanical and Electric Installation MD320/MD320N User Manual Fig.3-3 Removing the Down Cover Plate of Plastic Enclosure The MD series inverter of more than 18.5kW employs sheet-metal enclosure. Please refer to Figure 3-4 for removing the lower cover plate of the sheet-metal enclosure. It is easy to loosen the screws of the upper cover plate with tools.

• Page 46: Electrical Installation

  MD320/MD320N User Manual Mechanical and Electric Installation 3.2 Electrical Installation 3.2.1 Guide to the external electrical parts: Table 3-1 Guide to Prototyping of External Electrical Parts of MD320 Inverter Recommend- Recomm Recomme- -ended nded Circuit Recomm Conducting Conducting Conducting Breaker ended Inverter Model Wire of Main…

• Page 47
  150*4 MD320 7T*** Refer to parameters of rated current of 380V system alike. Caution: The electrical installation of MD320N series is the same as MD320 series. Table 3-2 Instruction for the Use of External Electrical Parts of MD320 Part Name…
• Page 48
  MD320/MD320N User Manual Mechanical and Electric Installation Part Name Mounting Location Function Description ● Improve the power factor of the input side; ● Eliminate the higher harmonics of the input side effectively and prevent other equipment AC input side of the inverter from damaging due to distortion of voltage reactor wave.
• Page 49
  Mechanical and Electric Installation MD320/MD320N User Manual 3.2.3 Connections Schematic Diagram for Single-phase Inverter Connection: Fig.3-5 Schematic Diagram for Single-phase Iinverter Connection Precautions are as follows: Terminal ◎refers to Main circuit terminal,Terminal ○ refers to control circuit terminal. There is 0.4kW~2.2kW Build-in brake unit optional. B which is followed the product model represents Self-braking unit.
• Page 50
  MD320/MD320N User Manual Mechanical and Electric Installation Schematic Diagram for Three-phase Inverter Connection: Fig. 3-6 Schematic Diagram for Three-phase Inverter Connection Precautions are as follows: 1. Terminal◎ refers to the main circuit terminal,Terminal ○ refers to the control circuit terminal. 2.
• Page 51
  Mechanical and Electric Installation MD320/MD320N User Manual 3.2.4 Main Circuit Terminals and Connections Danger Danger Make sure that the power switch is in OFF status prior to perform wiring connection. Otherwise there may be danger of electric shock! Only the qualified and trained personnel can perform wiring connection. Otherwise it may cause equipment and human injuries! It shall be earthed reliably.
• Page 52
  MD320/MD320N User Manual Mechanical and Electric Installation Largest Cable MD320 Size of Power Torque Terminal kgf.cm T3.7G 14±0.5 T5.5G/7.5P 14±0.5 Largest Cable MD320 Size of Power Torque Terminal kgf.cm T7.5G/11P 28±0.5 T11G/15P 28±0.5 T15G/18.5P 28±0.5 Fig.3-7Diagram for Driver main circuit power terminal 1)Instructions of main circuit terminals of single-phase inverter: Terminals Name…
• Page 53
  Mechanical and Electric Installation MD320/MD320N User Manual Terminals Name Description Input terminal of R、S、T three-phase power AC input single-phase power connection point supply Negative and positive Shared DC bus input point (connection point of (+)、(-) terminals of DC bus external brake unit of more than 37kW) Connecting terminal Connection point of Brake resistor of less than (+)、PB…
• Page 54
  MD320/MD320N User Manual Mechanical and Electric Installation The inverter output side cannot connect to the capacitor or surge absorber. Otherwise, it may cause frequent inverter protection and even damage the inverter. In case the motor cable is too long, it may generate electrical resonance easily due to the impact of distributed capacitance, thus damaging the motor insulation or generating higher leakage current to invoke over current protection of the inverter.
• Page 55
  Mechanical and Electric Installation MD320/MD320N User Manual Type Terminal Symbol Terminal Name Function Description Analog input 1 Input Voltage range: DC 0V to 10V AI1-GND terminal 1 2. Input resistance: 100kΩ 1. Input range: DC 0V ～ 10V/4mA ～ 20mA, which is determined by J3 jumper on the control Analog input board.
• Page 56
  MD320/MD320N User Manual Mechanical and Electric Installation Type Terminal Symbol Terminal Name Function Description Normally closed AC250V，3A，COSø=0.4. T/A-T/B terminal DC 30V，1A Contact driving capacity: Normally open AC250V, 3A, cosφ=0.4. T/A-T/C terminal DC 30V, 1A 28-core terminal and interface with optional Functional cards (I/O expansion card, multiple pump expansion card…
• Page 57
  Mechanical and Electric Installation MD320/MD320N User Manual B. Digital input terminal: It needs to employ shielded cable generally, with cable length of no more than 20 meters. When active driving is adopted, necessary filtering measures shall be taken to prevent the interference to the power supply.
• Page 58
  MD320/MD320N User Manual Mechanical and Electric Installation 2. Connection with dry contact sharing the positive pole Inve rte r Control Boa rd Inverter Control Board Fig.3-12 Connection with dry contact sharing the positive pole In this connection mode, it must remove the short circuit copper bar between +24V and OP and then connect OP with CME.
• Page 59
  Mechanical and Electric Installation MD320/MD320N User Manual This is one of the most commonly used connection mode. If external power supply is used, it must remove the short circuit copper bars between +24V and OP and between COM and CME respectively, and connect the positive pole of external power supply to OP and negative pole to CME.
• Page 60
  Operation and Display…

• Page 61: Chapter 4 Operation And Display

  Operation and Display MD320/MD320N User Manual Chapter 4 Operation and Display 4.1 Introduction to Operation and Display Interface With the operation panel, it can perform such operations on the inverter as function parameter modification, inverter working status monitoring and inverter running control (startup and stop). Refer to Fig.4-1 for the physical appearance and functional zone of the operation panel.

• Page 62: Description Of Function Code Viewing And Modification Methods

  MD320/MD320N User Manual Operation and Display RPM refers to the unit of rotation speed unit Digital display zone: Five-digit LED display, able to display setup frequency, output frequency, various monitoring data and alarm code. % refers to percentage Keyboard button description Table 4-1 Keyboard Function Button Name…

• Page 63: Shortcut Menu Operation Mode

  Operation and Display MD320/MD320N User Manual Parameter Set Function Code Function Code Modification Modification Modification ENTER ENTER 50.00 F0-08 050.00 PRG/ ENTER First-level menu Second-level menu Third-level menu Fig.4-2 Operation Procedure of Three-level Menu Caution: When operating on level 3 menu, press PRG key or ENTER key to return to level 2 menu.

• Page 64
  MD320/MD320N User Manual Operation and Display F0-01: Controm mode F0-02: Command source selection F0-03: Main frequency source selection F0-07: Frequency source selection F0-08: Preset frequency F0-17: Acceleration time F0-18: Deceleration time F3-00:V/F curve setup F3-01: Torque boost F4-00:DI1 terminal function selection F4-01:DI2 terminal function selection F4-02:DI3 terminal funciton selection F5-04:DO1 output selection F5-07:AO1 output selection…

• Page 65: Extended Function Menu

  Operation and Display MD320/MD320N User Manual Caution: In Stop or running display interface, press QUICK key to enter shortcut key, and select different shortcut parameters with UP/DOWN key. Then press ENTER key to enter next level of menu. At this time the modification method of shortcut parameter is the same as that of the parameters in common level 3 menu.

• Page 66: Password Setting

  MD320/MD320N User Manual Operation and Display When the inverter is restarted upon power shutdown, the displayed parameters are the parameters selected before the power shutdown. 4.6 Password Setting The inverter provides user password protection function. When FP-00 is set to non-zero value, it indicates the user password, and the password protection turns valid after exiting the function code editing status.

• Page 67
  Operation and Display MD320/MD320N User Manual The inverter measures rotor resistance, rotor resistance and leakage inductive reactance in sequence but does not measure the mutual inductive reactance and no-load current of the motor, which can be calculated by the user based on the motor nameplate. The motor nameplate parameters used in the calculation include rated voltage U, rated current l, rated frequency ƒ…
• Page 68
  Function Parameter Table…

• Page 69: Chapter 5 Function Parameter Table

  Function Parameter Table MD320/MD320N User Manual Chapter 5 Function Parameter Table If FP-00 is set to non-zero value, it means parameter protection password is set, and the parameter menu cannot be entered until correct password is input. To cancel the password, it needs to set FP-00 to “0”.

• Page 70
  MD320/MD320N User Manual Function Parameter Table Function Parameter Table Factory Function Minim- Modification Name LED display Set range default code um unit description value Group F0 Basic Function Group 1: G model (constant torque load model) Model F0-00 Model display Model display ●…
• Page 71
  Function Parameter Table MD320/MD320N User Manual Factory Function Minim- Modification Name LED display Set range default code um unit description value Auxiliary 0: Relative to maximum Frequency Y range frequency F0-05 source ☆ selection 1: Relative to frequency source Y range selection Auxiliary Auxiliary…
• Page 72
  MD320/MD320N User Manual Function Parameter Table Factory Function Minim- Modification Name LED display Set range default code um unit description value 0: Fixed PWM, carrier frequency temperature adjustment inactive 1: Random PWM, carrier Carrier Carrier frequency temperature frequency frequency adjustment inactive F0-16 ☆…
• Page 73
  Function Parameter Table MD320/MD320N User Manual Factory Function Minim- Modification Name LED display Set range default code um unit description value F2 Vector Control Parameters speed loop F2-00 proportional Speed loop P1 0～100 ☆ gain 1 speed loop F2-01 integration Speed loop l1 0.01s～10.00s 0.01s…
• Page 74
  MD320/MD320N User Manual Function Parameter Table Factory Function Minim- Modification Name LED display Set range default code um unit description value 0: Straight V/F curve V/F curve F3-00 V/F curve setup 1: Multiple-point V/F curve ★ setup 2: Square V/F curve F3-01 Torque boost Torque boost…
• Page 75
  Function Parameter Table MD320/MD320N User Manual Factory Function Minim- Modification Name LED display Set range default code um unit description value DI1 terminal DI1 terminal F4-00 function ★ selection selection DI2 terminal DI2 terminal F4-01 function ★ selection selection D13 terminal 0: No function DI3 terminal F4-02…
• Page 76
  MD320/MD320N User Manual Function Parameter Table Factory Function Minim- Modification Name LED display Set range default code um unit description value 20: Running command switching terminal 21: Acceleration/deceleration inactive22: PID Pause 23: PLC status reset 24: Swing frequency pause 25: Counter input26: Counter reset27: Length count input28: Length reset29: Torque control i n a c t i v e 3 0 : P U L S E ( p u l s e )
• Page 77
  Function Parameter Table MD320/MD320N User Manual Factory Function Minim- Modification Name LED display Set range default code um unit description value 38: PID integration pause terminal When this terminal is enabled, the PID integration action pauses, but the proportional adjustment and differential adjustment still has function.
• Page 78
  MD320/MD320N User Manual Function Parameter Table Factory Function Minim- Modification Name LED display Set range default code um unit description value AI2 minimum input AI2 minimum F4-19 -100.0%～100.0% 0.1% 0.0% ☆ correspondi- setup ng setup AI2 maximum AI2 maximum F4-20 0.00V～10.00V 0.01V 10.00V…
• Page 79
  Function Parameter Table MD320/MD320N User Manual Factory Function Minim- Modification Name LED display Set range default code um unit description value PULSE (pulse) input Pulse minimum F4-29 minimum -100.0%～100.0% 0.1% 0.0% ☆ frequency setup corresponding setup PULSE Pulse (pulse) input 0.01 F4-30 maximum…
• Page 80
  MD320/MD320N User Manual Function Parameter Table Factory Function Minim- Modification Name LED display Set range default code um unit description value FMR output FMR output 0: No output F5-01 ★ selection selection 1: Inverter is running 2: Fault output Control board Control board 3: Frequency level detection FDT relay (T/A-T/…
• Page 81
  Function Parameter Table MD320/MD320N User Manual Factory Function Minim- Modification Name LED display Set range default code um unit description value F5-11 AO1 gain AO1 gain -10.00～10.00 0.01 1.00 ☆ AO2 offset coefficient F5-12 (on IO AO offset -100.0%～100.0% 0.1% 0.0% ☆…
• Page 82
  MD320/MD320N User Manual Function Parameter Table Factory Function Minim- Modification Name LED display Set range default code um unit description value DC brake Brake waiting F6-12 waiting time at 0.0s～36.0s 0.1s 0.0s ☆ at stop stop DC brake DC brake F6-13 0%～100% ☆…
• Page 83
  Function Parameter Table MD320/MD320N User Manual Factory Function Minim- Modification Name LED display Set range default code um unit description value 1 Radiator Radiator F7-07 0.0℃～100℃ 1℃ ● temperature 1 temperature 1 Radiator Radiator F7-08 0.0℃～100℃ 1℃ ● temperature 2 temperature 2 Accumulated Accumulated…
• Page 84
  MD320/MD320N User Manual Function Parameter Table Factory Function Minim- Modification Name LED display Set range default code um unit description value Setup frequency Frequency 0: Run with frequency lower limit lower than F8-14 lower limit 1: Stop ☆ frequency action 2: Zero speed operation lower limit action…
• Page 85
  Function Parameter Table MD320/MD320N User Manual Factory Function Minim- Modification Name LED display Set range default code um unit description value Motor Overload overload F9-01 protection 0.20～10.00 0.01 1.00 ☆ protection coefficient gain Motor Overload overload F9-02 pre-warning 50%～100% ☆ pre-warning coefficient coefficient…
• Page 86
  MD320/MD320N User Manual Function Parameter Table Factory Function Minim- Modification Name LED display Set range default code um unit description value Output Output phase-failure 0: Inactive F9-13 phase-failure ☆ protection 1: Active selection selection 0: No fault The first fault 1 : I n v e r t e r u n i t p r o t e c t i o n F9-14 －…
• Page 87
  Function Parameter Table MD320/MD320N User Manual Factory Function Minim- Modification Name LED display Set range default code um unit description value Input terminal Input terminal F9-20 － － － ● upon fault upon fault Output Output F9-21 terminal upon terminal upon －…
• Page 88
  MD320/MD320N User Manual Function Parameter Table Factory Function Minim- Modification Name LED display Set range default code um unit description value Swing Swing FB-01 frequency frequency 0.0%～100.0% 0.1% 0.0% ☆ amplitude amplitude Kick Kick frequency FB-02 frequency 0.0%～50.0% 0.1% 0.0% ☆…
• Page 89
  Function Parameter Table MD320/MD320N User Manual Factory Function Minim- Modification Name LED display Set range default code um unit description value Negative maximum frequency to FC-09 MS speed 9 MS speed 9 0.1Hz 0.0Hz ☆ maximum frequency Negative maximum frequency to FC-10 MS speed 10 MS speed 10…
• Page 90
  MD320/MD320N User Manual Function Parameter Table Factory Function Minim- Modification Name LED display Set range default code um unit description value Second segment Second speed-up/ segment FC-23 0～3 ☆ speed-down speed-up/ time selection speed-down of PLC Third segment Third 0.1s FC-24 running time 0.0s(h)～6553.5s(h)
• Page 91
  Function Parameter Table MD320/MD320N User Manual Factory Function Minim- Modification Name LED display Set range default code um unit description value Seventh -segment Seventh speed-up/ -segment FC-33 0～3 ☆ speed-down speed-up/ time selection speed-down of PLC Eighth- segment Eighth 0.1s FC-34 0.0s(h)～6553.5s(h) 0.0s（h）…
• Page 92
  MD320/MD320N User Manual Function Parameter Table Factory Function Minim- Modification Name LED display Set range default code um unit description value Eleventh -segment Eleventh speed-up/ -segment FC-41 0～3 ☆ speed-down speed-up/ time selection speed-down of PLC Twelfth- segment Twelfth 0.1s FC-42 0.0s(h)～6553.5s(h) 0.0s（h）…
• Page 93
  Function Parameter Table MD320/MD320N User Manual Factory Function Minim- Modification Name LED display Set range default code um unit description value Running time Time unit 0: s(s) FC-50 ☆ of PLC selection 1: h(h) Group FD Communication Parameters 0：300BPS 1：600BPS 2：1200BPS 3：2400BPS FD-00…
• Page 94
  Parameter Description…

• Page 95: Chapter 6 Parameter Description

  Parameter Description MD320/MD320N User Manual Chapter 6 Parameter Description Group F0 Basic Function Model display Factory default value Model dependent F0-00 G model (constant torque load model) Setup range P model (fan and pump load model) This parameter is provided only for the user to view the factory default model and cannot be modified.

• Page 96
  2: serial port command channel (“LOCAL/REMOT” LED flashes) The running command is sent by the host computer via the communication mode. When selecting this item, it must be used together Modbus RTU of Shenzhen Inovance Technology Co., Ltd. Main frequency source X…
• Page 97
  Parameter Description MD320/MD320N User Manual keyboard (or UP and DOWN of multifunctional input terminals). “Recorded” means that the setup frequency upon restart of inverter due to power failure remains the same. 2:AI1 3:AI2 4:AI3 It means that the frequency is determined by the analog input terminal. Standard unit provides two analog input terminals, and optional I/O expansion card can provide one analog input terminal (Al3).
• Page 98
  MD320/MD320N User Manual Parameter Description Auxiliary Frequency source Factory default value Y selection Digital setup UP and DOWN (non-recorded) Digital setup UP and DOWN (recorded) F0-04 Setup Range PULSE setup (Dl5) MS speed Communication setup When the auxiliary frequency source is used as independent frequency reference channel (i.e. frequency source switching from X to Y”), it is used in the same way as the main frequency source X.
• Page 99
  Parameter Description MD320/MD320N User Manual When the frequency source selection is frequency overlap reference (F0-07 is set to 1 or 3), it is used to determine the adjustment range of auxiliary frequency source. F0-05 is used to determine the relative object of that range. If it is relative to maximum frequency X, that range will vary with the main frequency X.
• Page 100
  MD320/MD320N User Manual Parameter Description When the main frequency source is selected as “Digital setup” or “Terminals UP/DN”, this function code is the initial value of frequency digital setup of the inverter. Running direction Factory default value F0-09 Direction is consistent Setup Range Direction is reverse Through modifying this function code, it can change the rotary direction of the motor without…
• Page 101
  Parameter Description MD320/MD320N User Manual Its reference value is F0-12. The addition of offset frequency and analog setup value of frequency upper limit is used as the final setup value of frequency upper limit. Frequency lower limit Factory default value 0.
• Page 102
  MD320/MD320N User Manual Parameter Description Carrier frequency adjustment Factory default value selection Fixed PWM, and carrier frequency temperature adjustment inactive. Random PWM, and carrier frequency temperature F0-16 adjustment inactive. Setup range Fixed PWM, and carrier frequency temperature adjustment active. Random PWM, and carrier frequency temperature adjustment active.

• Page 103: Group F1 Motor Parameters

  Parameter Description MD320/MD320N User Manual There are totally four groups of acceleration/deceleration time for selection. Group 1: F0-17 and F0-18; Group 2: F8-03 and F8-04; Group 3: F8-05 and F8-06; Group 4: F8-07 and F8-08; It can select acceleration/deceleration time via the multifunctional digital input terminals (F4-00 to F4-08).

• Page 104
  MD320/MD320N User Manual Parameter Description Stator resistance Factory default value Model dependent F1-06 Setup range 0.001Ω~ 65.535Ω Rotor resistance Factory default value model dependent F1-07 Setup range 0.001Ω~ 65.535Ω Leakage inductive Factory default value model dependent F1-08 reactance Setup range 0.01mH ~ 655.35mH Mutual inductive Factory default value…
• Page 105
  Parameter Description MD320/MD320N User Manual Tuning operation description: When F1-11 is set to 1 or 2, press ENTER key and “TUNE” will be displayed and flashes. Press RUN key to conduct parameter tuning, and at this time the displayed “TUNE” stops flashing. After the tuning is completed, the display will return to the stop status interface.
• Page 106
  MD320/MD320N User Manual Parameter Description P a ra me te r Fre que ncy Comma nd Fig.6-2 Schematic diagram of PI parameter The speed dynamic response characteristics of the vector control can be adjusted by setting the proportional coefficient and integration time of the speed regulator. Increasing the proportional gain or reducing the integration time can accelerate the dynamic response of the speed loop.
• Page 107
  Parameter Description MD320/MD320N User Manual In the vector control mode, the output of speed loop regulator is torque current command. This parameter is used to filter the torque command. This parameter needs no adjustment generally and this filter time can be increased in case of huge speed fluctuation. In case of oscillation of motor, this parameter shall be reduced properly.

• Page 108: Group F3 V/F Control Parameters

  MD320/MD320N User Manual Parameter Description Torque upper limit source Factory default value F2-10 F2-09 Setup range PULSE setup Communication setup Torque upper limit Factory default value 150% F2-10 Setup range 0%~ 200% In the speed control mode, F2-09 is used to select the setup source of torque upper limit. When setting via the analog value, 100% of the analog input setup corresponds to F2-10, and the setup 100% corresponds to the rated torque of the motor matching the inverter.

• Page 109
  Parameter Description MD320/MD320N User Manual machine. 2: Square V/F curve. It is suitable for the centrifugal loads such as fan and pump. Torque boost Factory default value 1.0% F3-01 Setup range 0.0% ~ 30% Cutoff frequency of torque Factory default value 50.00Hz boost F3-02…
• Page 110
  MD320/MD320N User Manual Parameter Description V/F frequency F1 Factory default value 0.00Hz F3-03 Setup range 0.00Hz ~ rated motor frequency V/F voltage V1 Factory default value 0.0% F3-04 Setup range 0.0%~ 100.0% V/F frequency F2 Factory default value 0.00Hz F3-05 Setup range V1 ~ rated motor frequency V/F voltage V2…

• Page 111: Group F4 Input Terminal

  VF operation. Group F4 Input Terminal The standard unit of MD320 series inverter has five multifunctional digital input terminals (DI5 of which can be used as high-speed pulse input terminal) and two analog input terminals. If the system needs more input/output terminals, optional multifunctional input/output expansion card can be used.

• Page 112
  MD320/MD320N User Manual Parameter Description DI5 terminal function F4-04 Factory default value 13 (MS speed 2) selection DI6 terminal function F4-05 Factory default value selection DI7 terminal function F4-06 Factory default value selection DI8 terminal function F4-07 Factory default value selection DI9 terminal function F4-08…
• Page 113
  Parameter Description MD320/MD320N User Manual Setup Function Description value Terminal UP When the frequency is given by the external terminals, it is used as increment and decrement commands of frequency modification When the Terminal DOWN frequency source is set to digital setup, it can be used to adjust the setup frequency.
• Page 114
  MD320/MD320N User Manual Parameter Description Setup Function Description value When the frequency source selection (F0-07) is set to 2, it performs switching between main frequency source X and auxiliary frequency source Y via this terminal. When the frequency source selection (F0-07) is set to 3, it performs switching between main Frequency source switching frequency source X and (main frequency X plus…
• Page 115
  Parameter Description MD320/MD320N User Manual Setup Function Description value Counter input The input terminal of counting pulse. Counter reset Clear the counter status. Length count input Input terminal of length counting. Length reset Length clear Torque control inactive The torque control of inverter is inactive. PULSE (pulse) frequency It is pulse input terminal.
• Page 116
  MD320/MD320N User Manual Parameter Description Attached Table 2 MS Speed Function Description Speed-up/speed-down Terminal 2 Terminal 1 Corresponding Parameter time selection Speed-up time 1 F0-17 and F0-18 Speed-up time 2 F8-03, F8-04 Speed-up time 3 F8-05 and F8-06 Speed-up time 4 F8-07 and F8-08 DI filter time Factory default value…
• Page 117
  Parameter Description MD320/MD320N User Manual Running Commanc Stop Stop Forward Rotation Reverse Rotation Fig.6-6 Three-line Running Mode 2 2: Three-line running mode 1: In this mode, Dln is enabled terminal, and the direction is controlled by FWD and REV respectively. However, the pulse is enabled through disconnecting the signal of Dln terminal when the inverter stops.
• Page 118
  MD320/MD320N User Manual Parameter Description Where, SB1: Stop button SB2: Running button Dln is multifunctional input terminals of DI1 to DI5 (DI1 to DI10 if multifunctional input and output expansion card is selected). In this way, it shall define the corresponding terminal functions as No.3 function “Three-line Mode running Control”.
• Page 119
  Parameter Description MD320/MD320N User Manual Corre s ponding S e ttings (Fre que ncy, Torque , e tc.） Corre s ponding S e ttings (Fre que ncy, Torque , e tc.） Fig.6-9 Corresponding Relationship between Analog Reference and Setting AI2 minimum input Factory default value 0.00V F4-18…
• Page 120
  AI1 function. Group F5 Output Terminal The standard unit of MD320 series inverter has one multifunctional digital output terminals, one multifunctional relay output terminal, one FM terminal (can be used as either high-speed pulse output terminal or collector open output), and one multifunctional analog output terminal.
• Page 121
  Parameter Description MD320/MD320N User Manual output expansion card can be used. The multifunctional input and output expansion card has additional one multifunctional relay output terminal (relay 2), one multifunctional digital output terminal (DO2) and one multifunctional analog output terminal (AO2). FM terminal output mode Factory default value selection…
• Page 122
  MD320/MD320N User Manual Parameter Description Setup Function Description value Fault output When the inverter is faulty, it outputs ON signal. Frequenc-y level detection Please refer to F8-19 and F8-20 for details. FDT arrival Frequenc-y Please refer to F8-21 for details. arrival in zero speed When the inverter output frequency is less than the start…
• Page 123
  Parameter Description MD320/MD320N User Manual Setup Function Description value When the main circuit and control circuit power supply are Ready for connected, the inverter protection function is inactive, and the running inverter is in running status, it output ON signal. When the analog input AI1 value is higher than AI2 value, it AI1>AI2 outputs ON signal.
• Page 124
  MD320/MD320N User Manual Parameter Description Setup Function Range value Running frequency 0 to maximum output frequency Setup frequency 0 to maximum output frequency Output current 0 to 2 times of the motor rated current Output torque 0 to 2 times of the motor rated torque Output power 0 to 2 times rated power 0 to 1.2 times of the rated voltage of…

• Page 125: Group F6 Start/Stop Control

  Parameter Description MD320/MD320N User Manual It is generally used to correct the zero drift of the analog output and the output amplitude deviation. It can also be defined as any necessary output curve. For example, If the analog output is the running frequency, it is expected to output 8V(16mA) when the frequency is 0, and output 3V(6mA)at the maximum frequency, the gain shall be set to “-0.50”, and the zero offset shall be set to “80%”.

• Page 126
  MD320/MD320N User Manual Parameter Description Rotation speed tracking Factory default fastness and slowness value F6-02 Setup range 1~ 100 When it is in the mode of rotation speed tracking restart, select the fastness and slowness of the rotation speed tracking. The higher this parameter value is, the faster the tracking speed is. But too high value may result in unreliable tracking.
• Page 127
  0: Straight speed-up/speed-down The output frequency increases or decreases along the straight line. The speed-up/speed- down time varies with the setup acceleration/ deceleration time. The MD320 series inverter provides four types of speed-up/speed-down time. It can select speed-up/speed-down time via the multifunctional digital input terminals (F4-00 to F4-08).
• Page 128
  MD320/MD320N User Manual Parameter Description Acce le ra tion Time De ce le ra tion Time Fig.6-10 Schematic Diagram for S curve Acceleration/Deceleration Factory default Stop mode value F6-10 Speed-down to stop Setup range Free to stop 0: Speed-down to stop After the stop command is enabled, the inverter reduces the output frequency in accordance with the deceleration mode and the defined acceleration/deceleration time, and will stop after the frequency reduces to zero.
• Page 129
  Parameter Description MD320/MD320N User Manual DC brake beginning frequency at stop: During the acceleration to stop, when it reaches this frequency, the DC brake process at stop begins. DC brake waiting time at stop: Prior to the beginning of DC brake at stop, the inverter stops output and starts DC brake upon this delay.
• Page 130
  MD320/MD320N User Manual Parameter Description MF.K Key refers to multifunctional key. It can set and define the function of MF.K key on the keyboard via this parameter. It can perform switching via this key both in the stop and running process.
• Page 131
  Parameter Description MD320/MD320N User Manual L E D o p e r a t i o n d i s p l a y Factory default value parameter Setup F7-04 range： 65535 If the above parameters need to be displayed during the operation, set the corresponding positions to 1, and change the binary numbers into decimal numbers and set them in F7-01.
• Page 132
  MD320/MD320N User Manual Parameter Description Factory default Load speed display coefficient 1.000 value The output frequency of the F7-06 inverter and the load speed are Setup range 0.0001～6.5000 relative through this parameter. It is set when the load speed needs to be displayed. R a d i a t o r t e m p e r a t u r e o f Factory default inverter module…

• Page 133: Group F8 Auxiliary Function

  Parameter Description MD320/MD320N User Manual Software version No.2 Factory default value F7-11 Software version No. of the motor Setup range control board Group F8 Auxiliary Function Jog running Factory default 2.00Hz frequency value F8-00 0.00Hz ~ maximum frequency Setup range Factory default Jog speed-up time 20.00s…

• Page 134
  MD320/MD320N User Manual Parameter Description Factory default Speed-up time 4 20.00s value F8-07 Setup range 0.0s~ 6500.0s Factory default Speed-down time 4 20.00s F8-08 value Setup range 0.0s ~ 6500.0s Speed-up/speed-down time can select F0-17 and F0-18 and above three types of speed-up/ speed-down time.
• Page 135
  Parameter Description MD320/MD320N User Manual Forward/Reverse rotation Factory default 0.00s dead-zone time value F8-12 Setup range 0.00s~ 3000.0s During the setting of forward/reverse rotation of the inverter, the transition time at the output zero frequency position is shown in the following figure: Output Fre que ncy Forwa rd Rota tion RUNNING…
• Page 136
  MD320/MD320N User Manual Parameter Description When multiple inverters drive the same load, the unbalanced load distribution due to difference speed causes the inverter with faster speed to carry heavier load. The droop control characteristics cause the speed droop change along with the addition of load, which can lead to balanced load distribution.
• Page 137
  Parameter Description MD320/MD320N User Manual F r e q u e n c y d e t e c t i o n Factory default hysteresis 5.0% value F8-20 (FDT hysteresis) Setup range 0.0%~ 100.0%(FDT level) It is used to set the detection value of output frequency and hysteresis value upon removing of the output action.
• Page 138
  MD320/MD320N User Manual Parameter Description Earth short circuit protection Factory default detection upon power-on value F8-22 0:Inactive Setup range 1: Active It can select whether the inverter checks the motor for earth short circuit failure upon power-on. If this function is active, the inverter has short-time output at the instance of power-on. Running time to action Factory default selection…
• Page 139
  Parameter Description MD320/MD320N User Manual M o t o r o v e r l o a d p r e — w a r n i n g Factory default coefficient value The reference for this value is the motor overload current.
• Page 140
  MD320/MD320N User Manual Parameter Description Factory default Stall gain over current value It adjusts the inverter’s capacity in suppressing the stall over current. The bigger the value is, the stronger the suppressing capacity is. For the load with small inertia, F9-05 Setup the value should be small.
• Page 141
  Parameter Description MD320/MD320N User Manual Transient stop non-stop Factory default function value This function means that the inverter will not stop upon transient power failure. In case of transient power failure or sudden reduction in voltage, the inverter will F9-07 Setup 0:Inactive reduce the output speed and compensate…
• Page 142
  MD320/MD320N User Manual Parameter Description Input phase failure Factory default protection selection value Select whether to provide protection for input phase failure. Only the MD series F9-12 inverter of G model with over 18.5kW can 0:Inactive Setup range have input phase loss protection function, 1:Active and the P model with 18.5kW has not such function no matter whether F9-10 is…

• Page 143: Group Fa Process Control Pid Function

  Parameter Description MD320/MD320N User Manual This value is a decimal number. Display the status of all the digital input terminals upon fault for the most recent one time, with sequence of: BIT9 BIT8 BIT7 BIT6 BIT5 BIT4 BIT3 BIT2 BIT1 BIT0 Input terminal DI10……………………………………………………………

• Page 144
  MD320/MD320N User Manual Parameter Description arget Deviation Quantity Limit Feedback Quantity Fig. 6-15 Process PID Principle Framework PID reference source Factory default value FA-01 FA-00 Setup range PULSE (DI5) Communication setup When the frequency source selects PID, i.e. F0-03 or F0-04=8, this group of function is enabled.
• Page 145
  Parameter Description MD320/MD320N User Manual This parameter is used to select the PID reference channel. PID action direction Factory default value FA-03 Positive action Setup range Reverse action Positive action: When the feedback signal is higher than the PID reference, it needs to reduce the output frequency of the inverter to balance the PID.

• Page 146: Group Fb Swing Frequency, Fixed Length And Count

  MD320/MD320N User Manual Parameter Description Cutoff frequency of reverse Factory default value 2.00Hz rotation FA-08 Setup range 0.00 ~ maximum frequency Deviation limit Factory default value 0.01% FA-09 Setup range 0. 0%~ 100.0% Divation limit: When the PID feedback deviation is within this range, the PID stops adjustment; Differential amplitude Factory default value FA-10…

• Page 147
  Parameter Description MD320/MD320N User Manual Swing frequency amplitude Factory default value 0.0% FB-01 Setup range 0.0% to 100.0% Kick frequency amplitude 1 Factory default value 0.0% FB-02 Setup range 0.0% to 50.0% This parameter is used to determine the values of swing amplitude and kick frequency. The swing frequency is limited by the frequency upper limit and frequency lower limit.

• Page 148: Group Fc Ms Speed Function And Simple Plc Function

  MD320/MD320N User Manual Parameter Description The setup length, actual length and number of pulses each meter are mainly used for fixed length control. The length is calculated via the pulse signal input by the digital input terminal, and it needs to set the corresponding input terminal to length count input terminal.

• Page 149
  Parameter Description MD320/MD320N User Manual for details. When the frequency source selections F0-07, F0-03 and F0-04 are determined as MS speed running mode, it needs to set FC-00 to FC-15 to determine its characteristics. MS speed 0 Factory default value 0.0Hz FC-00 Setup range…
• Page 150
  MD320/MD320N User Manual Parameter Description MS speed 15 Factory default value 0.0Hz FC-15 Setup range Negative maximum frequency to maximum frequency When the frequency source parameters F0-07, F0-03 and F0-04 are determined as PLC running mode, it needs to set FC-00 to FC-15, FC-16, FC-17 and FC-18 to FC-49 to determine its characteristics.
• Page 151
  Parameter Description MD320/MD320N User Manual The inverter will automatically start next one cycle upon completion of one cycle, and will not stop until stop command is given. PLC power failure with memory means the running phase and frequency of PLC before power failure is memorized.
• Page 152
  MD320/MD320N User Manual Parameter Description Sixth-segment running time Factory default value 0.0s(h) of PLC FC-30 Setup range 0.0s(h)～6553.5s(h) Speed-up/speed-down time Factory default value of sixth-segment of PLC FC-31 Setup range 0～3 Seventh-segment running Factory default value 0.0s(h) time of PLC FC-32 Setup range 0.0s(h)～6553.5s(h)
• Page 153
  Parameter Description MD320/MD320N User Manual Speed-up/speed-down time Factory default value of twelfth-segment of PLC FC-43 Setup range 0～3 Thirteenth-segment running Factory default value 0.0s(h) time of PLC FC-44 Setup range 0.0s(h)～6553.5s(h) Speed-up/speed-down time Factory default value of thirteenth-segment of PLC FC-45 Setup range 0～3…

• Page 154: Group Fd Communication Parameters

  MD320/MD320N User Manual Parameter Description Group FD Communication Parameters Refer to MD320 Serial Communication Protocol for details. Group FF Factory Parameters (Reserved) Group FP User Password user password Factory default value FP-00 Setup range 0 to 65535 Any non-zero number can be set, and then the password protection function will be enabled. 000: Clear the previous setup user password and disable the password protection function.

• Page 155
  Parameter Description MD320/MD320N User Manual…
• Page 156
  EMC Guide…

• Page 157: Chapter 7 Emc (Electromagnetic Compatibility)

  EMC Guide MD320/MD320N User Manual Chapter 7 EMC (Electromagnetic Compatibility) 7.1 Definition Electromagnetic compatibility is the ability of the electric equipment to run in the electromagnetic interference environment and implement its function stably without interferences on the electromagnetic environment. 7.2 EMC Standard Description In accordance with the requirements of the national standard GB/T12668.3, the inverter needs to comply with electromagnetic interference and anti- electromagnetic interference requirements.

• Page 158
  MD320/MD320N User Manual EMC Guide The earth wires of the Inverter and other electric products shall be well grounded; The power input and output power cables of the inverter and weak current signal cables (e.g. control line) shall not be arranged in parallel and vertical arrangement is preferable. It is recommended that the output power cables of the inverter employ shield cables or steel pipe shielded cables and that the shielding layer be earthed reliably.
• Page 159
  EMC Guide MD320/MD320N User Manual The surrounding equipment is separately earthed, which can avoid the interference caused by the leakage current of the inverter’s earth wire when common earth mode is adopted. 7.3.5 Leakage current and handling There are two forms of leakage current when using the inverter. One is leakage current to the earth, and the other is leakage current between the cables.
• Page 160
  Fault Diagnosis and Solution…

• Page 161: Chapter 8 Fault Diagnosis And Solution

  Fault Diagnosis and Solution MD320/MD320N User Manual Chapter 8 Fault Diagnosis and Solution 8.1 Fault Alarm and Countermeasures MD320 inverter has 24 pieces of warning information and protection function. In case of abnormal fault, the protection function will be invoked, the inverter will stop output, and the faulty relay contact of the inverter will start, and the fault code will be displayed on the display panel of the inverter.

• Page 162
  MD320/MD320N User Manual Fault Diagnosis and Solution Acce le ra tion ove r curre nt Che ck if the output loop of the Ye s P e rform trouble s hooting inve rte r is e a rthe d or s hort circuite d If the motor pa ra me te rs a re ide ntifie d Ide ntify the motor pa ra me te rs V/F Mode…
• Page 163
  Fault Diagnosis and Solution MD320/MD320N User Manual De ce le ra tion ove r curre nt Ye s Che ck if the output loop of the P e rform trouble s hooting inve rte r is e a rthe d or s hort circuite d Ide ntify the motor pa ra me te rs If the motor pa ra me te rs a re ide ntifie d V/F Mode…
• Page 164
  MD320/MD320N User Manual Fault Diagnosis and Solution Cons ta nt S pe e d ove r Curre nt P e rform trouble s hooting, a nd ins ta ll Ye s Che ck if the output loop of the inve rte r is output re a ctor if the line is too long s hort circuite d or ha s le a ka ge curre nt Ide ntify the motor pa ra me te rs…
• Page 165
  Fault Diagnosis and Solution MD320/MD320N User Manual Acce le ra tion ove r Volta ge Ye s If the input volta ge is too high Adjus t the volta ge to norma l ra nge If the re a re e xte rna l force s Ye s Re move the e xte rna l force s driving the motor to run during…
• Page 166
  MD320/MD320N User Manual Fault Diagnosis and Solution De ce le ra tion ove r volta ge Ye s If the input volta ge is too high Adjus t the volta ge to norma l ra nge f the re a re e xte rna l force s Ye s Re move the e xte rna l force s driving the motor to run during…
• Page 167
  Fault Diagnosis and Solution MD320/MD320N User Manual Control powe r s upply Ｎo Adjus t the volta ge to the ra nge a s If the input volta ge is within the ra nge s pe cifie d by the s pe cifica tions a s s pe cifie d by the s pe cifica tions As k for te chnica l s upport Fig.8-8 Control power supply fault(ERR08)
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  MD320/MD320N User Manual Fault Diagnosis and Solution Inve rte r Ove rloa d Motor ove rloa d If the motor prote ction pa ra me te r S e t this pa ra me te r prope rly F9-01 is s e t prope rly Ye s Ye s Re duce the loa d a nd che ck…
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  Fault Diagnosis and Solution MD320/MD320N User Manual Phase loss failure at the output side Err13 Check if the cable connecting the Perform troubleshooting inverter to the motor is normal Check if the three-phase Check if the three -phase output of the running winding of the motor is inverter without motor is balanced Ask for technical support…
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  MD320/MD320N User Manual Fault Diagnosis and Solution Exte rna l e quipme nt fa ult Ye s If it is s toppe d by pre s s ing the S TOP ke y Reset to run in the non-ke yboa rd ope ra tion mode Ye s If it inputs e xte rna l fa ult s igna l via Che ck a nd re move…
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  Fault Diagnosis and Solution MD320/MD320N User Manual Contactor Fault Err17 Replace the control board Check if the control board and power or power supply supply is normal Replace the contactor Check if the contactor is normal Fig.8-16 Contactor fault (Err17) Current detection fault Ask for technical support Replace the hall device…
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  MD320/MD320N User Manual Fault Diagnosis and Solution Motor tuning fa ult If the motor pa ra me te rs a re s e t a s S e t the motor pa ra me te rs corre ctly pe r the motor na me pla te Ye s Che ck the ca ble conne cting If the pa ra me te r ide ntifica tion…
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  Fault Diagnosis and Solution MD320/MD320N User Manual Data Overflow Ask for technical support If it is normal after replacing the Main control board fault main control board Fig.8-20 Data overflow (ERR21) Inverter hardware fault Remove over voltage fault If it is over voltage If it is over current Remove over current fault Fig.8-21 Inverter hardware fault(ERR22)

• Page 174: Common Fault And Resolution

  MD320/MD320N User Manual Fault Diagnosis and Solution 8.2 Common Fault and Resolution During the inverter using process, the following faults may occur. Please conduct simple fault analysis by referring to the methods below: Table8-1 Common Fault and Resolution Fault Phenomenon Possible Cause Solution The inverter has no input…

• Page 175
  Fault Diagnosis and Solution MD320/MD320N User Manual Fault Phenomenon Possible Cause Solution The parameter is set Check and reset Group F4 wrongly. related parameters. The short circuit copper bar DI terminal disabled Reconnect the cables. between OP and +24V is Consult the manufacturer.
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  Appendix…

• Page 177: Appendix: Card Description

  A.1 Model and Specifications A.1.1 Model Shenzhen Inovance Technology Co., Ltd provides two kinds of PG card matching the MD320 inverter. Refer to Appendix A: Table 1 PG Card Model Description for details. Appendix A: Table 1 PG Card Model Description…

• Page 178
  MD320/MD320N User Manual Appendix Toggle Switch Appendix A: Fig.2 PG Card Dimension Appendix A: Fig.3 PG Card Terminal Definition A.2 Instruction for use A.2.1 Function It must select PG card when the user has needs for speed sensor vector control. The standard configurations of the PG card include processing circuits of two orthogonal encoder signals, encoder signal able to receive open collector output or push-pull collector output, and encoder power supply (fixed at +15V output).
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  Appendix MD320/MD320N User Manual can be determined by multiplying its binary number with 2. “1” on the toggle switch is the binary lower bit, while “5” is the higher bit. When the toggle switch is switched to ON, the bit is enabled and indicates “1”…
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  MD320/MD320N User Manual Appendix 2. Schematic Diagram for Frequency Division Interface Fre que ncy divis ion S che ma tic Dia gra m Appendix A: Fig.5 Schematic Diagram for Frequency Division Interface A.2.4 Precautions The PG card signal cables and the power cables shall be arranged separately, and parallel wiring is not allowed;…
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  Appendix MD320/MD320N User Manual P G Ca rd Ope n colle ctor output code S hie lde d ca ble Appendix A: Fig.6 Schematic Diagram for the Connection of Collector Output Encoder 2. Schematic Diagram for the Connection of Push-Pull Output Encoder P G Ca rd Ope n colle ctor output code S hie lde d ca ble…

• Page 182: Appendix B: Description Of Long-Line Drive Pg Card (Md32Pg3)

  Appendix Appendix B: Description of Long-line Drive PG Card (MD32PG3) This PG card is connected to the adapter of Inovance inverter as differential encoder. It can be applied in the situation with synchronous motor and induction motor close loop control.

• Page 183: Appendix C: Description Of Io Expansion Card (Md32Io)

  Appendix C: Description of IO Expansion Card (MD32IO) C.1 Overview MD32IO card is I/O expansion card launched by Shenzhen Inovance Technology Co., Ltd to support the use of MD320 series inverter. It can add five digital inputs, one analog voltage signal input, one relay signal output, one digital signal output and one analog signal output.

• Page 184
  MD320/MD320N User Manual Appendix Loca ting hole Thre e Expa ns ion Mounting hole ca rd inte rfa ce 83mm 83mm 80mm 80mm Appendix C: Fig.2 Physical Dimensions 0-10V 0/4-20mA Appendix C: Fig.3 Jumper Terminal C.2.2 Description of Control Terminal Function:…
• Page 185
  Appendix MD320/MD320N User Manual Appendix C: Table 1 Control Terminal Function Terminal Terminal Type Function description Symbol name Provide +10V power supply for external units, with maximum output current of 10mA. It is generally used as the operating power +10V-GND +10V-GND supply for the external potentiometer.
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  (RELAY 2) Normally AC250V, 3A, COSφ=0.4. P/A- P/C open terminal DC 30V, 1A Communi- Communi- The input/output signal terminal for RS-485 cation cation communication terminal Auxiliary Control panel 28-core terminal, connecting to control board interface interface of MD320 series inverter…

• Page 187: Appendix D: Description Of Communication Card (Md32Mbs)

  Refer to MD320 Serial Communication Protocol for the details regarding the communication card, which is available on the website of www.inovance.cn or from the local representative office or agent. Description of RS-232 communication card: The physical structure and connecting mode are as shown in Appendix D: Fig.1 Physical Structure and Connecting Mode, while RJ45 interface…

• Page 188
  MD320/MD320N User Manual Appendix WGND RS232-TXD RS232-RXD Appendix D: Fig.2 RS-232 Signal Definition Description of RS-485 communication card: The physical structure and connecting mode are as shown in the following figure. RS-485 communication mode provides two types of connections, which are mutually connected. The user can freely select the communication line connections based on the actual needs.

• Page 189: Appendix E: Description Of Parameter Copy Card (Mdcp)

  Appendix MD320/MD320N User Manual the twisted-pair cables be employed for the communication connection and parallel cables be avoided as much as possible. 2) It is preferable to select the shielded cable as RS-232 signal cable. Appendix E: Description of Parameter Copy Card (MDCP) E.1 Schematic Diagram for Parameter Copy Keyboard E.2 Definition of Parameter Copy Card Up-upload parameter: It is to upload the parameters in the parameter copy keyboard to the…

• Page 190: Appendix F: Md320 Serial Communication Protocol

  1.61 or if the connecting cable is loosen, and repeat the parameter download or upload. Appendix F MD320 serial communication protocol MD320 series of inverter provides RS232/RS485 communication interface, and adopts MODBUS communication protocol.User can carry out centralized monitoring through PC/PLC to get operating requirements.

• Page 191
  F.5 Communication data structure ModBus protocol communication data format of MD320 series of inverter is shown as following: (In RTU mode, messages start with a interval of at least 3.5 character times. This is most easily implemented as a multiple of character times at the baud rate that is being used on the network (shown as T1-T2-T3-T4 in the figure below).
• Page 192
  MD320/MD320N User Manual Appendix CRC CHK High Order Detection Value: CAC value CRC CHK Low order 3.5-character time Command code: 03H reads N words. (There are 12 characters can be read at the most.) For example: The inverter start address F002 of the slave 01 continuously reads two consecutive values.
• Page 193
  Appendix MD320/MD320N User Manual The Number of byte Data F002H high order Data F002H low order Data F003H high order Data F003H low order CRC CHK low order CRC CHK values are to be calculated CRC CHK high order Command Code:06H,write a word For example:Write 5000(1388H)into F00AH which slave address is 02H.
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  MD320/MD320N User Manual Appendix and compares the calculated value to the actual value it received in the CRC field. If the two values are not equal, an error results. The CRC is started by 0xFFFF.Then a process begins of applying successive eight-bit bytes of the message to the current contents of the register.
• Page 195
  Appendix MD320/MD320N User Manual return(crc_value); The chapter is about communication contents, it’s used to control the inverter operation, the status of the inverter and related parameter setup. Read and write function-code parameters (Some functional code is not changed, only for the manufacturer use.) The mark rules of Function code parameters address: The group number and mark of function code is the parameter address for indicating the rules.
• Page 196
  MD320/MD320N User Manual Appendix Parameter addr. Parameter description 1000 Communication setup value(-10000 to 10000)( Decimal) 1001 Running frequency 1002 Bus voltage 1003 Output voltage 1004 Output voltage 1005 Output power 1006 Output torque 1007 Running speed 1008 DI input flag 1009 DO output flag 100A…
• Page 197
  Appendix MD320/MD320N User Manual Command Word Command Function Address 0001：Forward operation 0002：Reverse operation 0003：Forward jog 2000 0004：Reverse jog 0005：Free stop 0006：Speed-down stop 0007：Fault reset Read inverter status read-only) Status Sord Address Status Word Function 0001：Forward operation 3000 0002：Reverse operation 0003：Stop Parameters locking password checksum: (If the return is the 8888H, it indicates the password checksum pass)
• Page 198
  MD320/MD320N User Manual Appendix Analog output AO1 control: (write-only) Address of locking Contents of locking password command password command 7000 0～7FFF refers to 0％ to 100.00％ Analog output AO2 control: (write-only) Locking password Locking password command contents command address 9000 0～7FFF refers to 0％…
• Page 199
  Appendix MD320/MD320N User Manual Inverter fault Inverter fault information address 0000：No fault 0001：Inverter unit protection 0002：Speed-up over current 0003：Speed-down over current 0004：Constant over current 0005：Speed-up over voltage 0006：Speed-down over voltage 0007：Constant over voltage 0008：Control power supply fault 0009：Under voltage fault 8000 000A：Inverter overload 000B：Motor overload…
• Page 200
  MD320/MD320N User Manual Appendix Group FD Communication parameter description Baud rate Factory default value 300BPS 600BPS 1200BPS FD-00 2400BPS Setup range 4800BPS 9600BPS 19200BPS 38400BPS This parameter is used to set the the data transfer rate between host computer and the inverter. Please note that baud rate of the host computer and the inverter must be consistent.Otherwise, communication is impossible.
• Page 201
  Appendix MD320/MD320N User Manual When the function set to 0.0 s, the communication timeout parameter is inactive. When the function code set to RMS, if the interval time between the communication and the next communication is beyond the communication timeout, the system will report communication failure error (Err16).At normal circumstances, it will be set as inactive.
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  6. If there is any problem during the service, please contact the agent of our company or our company directly. 7. This agreement shall be interpreted by Shenzhen Inovance Technology Co., Ltd. Shenzhen Inovance Technology Co., Ltd. Service Department Address: Block E, Hongwei Industry Park, Liuxian Road, Baocheng No.
• Page 203
  Product Warranty Card Add. of unit: Name of unit: Contact person: Customer P.C.: information Tel.: Product model: Body barcode (Attach here): Product information Name of agent (Attach here): (Maintenance time and content): Failure information Maintenance personnel:…