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CHINT NVF2L Series User Instruction

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NO:2024.09
NVF2L Series
Drive
User Instruction
Standard: IEC 61800 3 -

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Summary of Contents for CHINT NVF2L Series

  • Page 1 NO:2024.09 NVF2L Series Drive User Instruction Standard: IEC 61800 3 -...
  • Page 2 Its modular structural design can reduce dust and oil entering the machine, thus meeting the complicated environmental requirements on site. NVF2L Series Drive is easy to operate and rich in functions, convenient for beginners to use, and can also meet the complicated application requirements of professional drive debuggers.

  • Page 3: Safety Precautions

    Safety precautions Please read these operation instructions carefully and follow all safety precautions herein before handling, installation, operation and maintenance. If ignored, it may cause personal injury or equipment damage, or even death. We shall not be responsible for injuries and equipment damage caused by the failure of your company or your customers to observe the safety precautions in the operation instructions.

  • Page 4: Operation

    Safety precautions ◆ Wiring Wiring operation must be carried out by qualified personnel, otherwise it may cause electric shock! Make sure that the input power supply is completely disconnected before wiring operation, otherwise it may cause electric shock! The grounding terminal of the drive must be reliably grounded, otherwise it may cause electric shock! The exposed parts of the main circuit wiring cables must be wrapped with insulating tape, otherwise it may cause electric shock! Danger...
  • Page 5 Safety precautions ◆ Motor and mechanical load Precautions Notes Comparison with The output voltage is PWM wave, which contains certain harmonics. Therefore, the temperature power frequency rise, noise and vibration of the motor are slightly increased compared with power frequency operation operation.
  • Page 6 Safety precautions ◆ Precautions for use Precautions Notes Capacitor used to improve Since the output of the drive is PWM wave, if the output side is equipped with a capacitor power factor or voltage to improve the power factor or a varistor for lightning protection, this will trip the drive or dependent device damage the device, so make sure to remove them.

  • Page 7: Table Of Contents

    Catalog Preface ..........Ⅰ...
  • Page 8 Catalog 8 Precautions for repair, maintenance and storage ... . 32 8.1 Daily maintenance and care ......... . 32 8.2 Regular inspection and maintenance .

  • Page 9: Main Purposes And Scope Of Application

    NVF2L Series Drive User Instruction Main purposes and scope of application 1.1 Open case inspection After receiving the product, the following inspection shall be carried out. If there is any discrepancy, please contact your local dealer: ◆ Whether the external package of the drive is complete, and whether it is deformed, damaged, wet and damped, etc.

  • Page 10: Series Product Model And Its Meanings

    NVF2L Series Drive User Instruction Series product model and its meanings 2.1 Series product model and its meaning The model on the product nameplate indicates the series and product specifications by a combination of letters and numbers, as shown in Figure 2.1.1.

  • Page 11: Product Model And Specification

    NVF2L Series Drive User Instruction 2.2 Product model and specification Table 2.2.1 Three-phase 380V Drive Model Specification Table Power supply capacity Input current Rated current Braking Adapet motor Drive model unit NVF2L–0.4/TS4 NVF2L–0.75/TS4 0.75 NVF2L–1.5/TS4 NVF2L–2.2/TS4-B NVF2L–3.0/TS4-B Standard built-in NVF2L–4.0/TS4-B 10.5...

  • Page 12: Normal Use Conditions

    NVF2L Series Drive User Instruction Normal use conditions 3.1 Normal use environment 1) It shall be installed indoors or inside the cabinet. 2) Power supply overvoltage level III 3) Ambient temperature and relative humidity Constant torque drive: -10°C~+40°C, derated between +40°C and +50°C, derated by 1% of rated power for every 1°C temperature rise.

  • Page 13: Installation Direction And Installation Space

    NVF2L Series Drive User Instruction 3.3 Installation direction and installation space In order to ensure the cooling effect of the product during working, please be sure to install it vertically. ◆ Installation space and direction requirements Figure 3.3.1 Installation Space of Single Equipment...
  • Page 14 NVF2L Series Drive User Instruction Figure 3.3.2 Parallel Installation of Multiple Equipment Items...
  • Page 15 NVF2L Series Drive User Instruction Figure 3.3.3 Vertical Installation of Multiple Equipment Items...

  • Page 16: Main Technical Parameters And Performance

    NVF2L Series Drive User Instruction Main technical parameters and performance 4.1 Product technical specifications Table 4.1.1 Technical Specifications of NVF2L Drive Items Item description Three-phase (380-480)V; Rated voltage Three-phase 230V Single-phase 230V Frequency 50Hz/60Hz Input Three-phase 380V (-15%)~440V (+15%) Voltage range Three-phase 230V (±15%)
  • Page 17 NVF2L Series Drive User Instruction Items Item description It can display more than 20 parameters such as set frequency, output LED display frequency, output voltage and output current Key lock Lock all or some of the keys Operation Function selection Define the functional scope of some keys to prevent mis-operation...

  • Page 18: Structural Characteristics And Working Principle

    5.1 Characteristic diagram of product main circuit The main circuit of NVF2L Series Drive includes rectifier bridge, precharge circuit, DC bus support capacitor, brake module, inversion bridge and other devices and circuits. The topology diagram of the main circuit is shown below.

  • Page 19: Product Structure Characteristic Diagram

    NVF2L Series Drive User Instruction 5.2 Product structure characteristic diagram NVF2L has a plastic shell structure. As shown in the figure below: Figure 5.2.1 Structural Characteristics of NVF2L Drive...

  • Page 20: Appearance, Installation Size And Weight

    NVF2L Series Drive User Instruction Appearance, installation size and weight 6.1 Appearance, installation size and weight Table 6.1.1 380V drive frame size and model Frame size Drive model NVF2L - 0.4/TS4 NVF2L - 0.75/TS4 NVF2L – 1.5/TS4 NVF2L – 2.2/TS4-B NVF2L –...
  • Page 21 NVF2L Series Drive User Instruction The outline installation of product frame is as follows: ◆ T1~T2 Figure 6.1.1 Installation Dimensions of T1 ~T2 Frame Size Outline ◆ The product outline, installation size and weight are summarized as follows: Table 6.1.4 Product shape, installation dimensions and weight...

  • Page 22: Installation, Debugging And Operation

    NVF2L Series Drive User Instruction Installation, debugging and operation 7.1 Inspections before installation ◆ Installation environment 1) It shall be installed indoors or inside the cabinet. 2) Power supply overvoltage level III 3) Ambient temperature and relative humidity Constant torque drive: -10°C~+40°C, derated between +40°C and +50°C, derated by 1% of rated power for every 1°C temperature rise.

  • Page 23: Main Circuit Wiring Mode

    NVF2L Series Drive User Instruction 7.2 Main circuit wiring mode The schematic diagrams for wiring mode and main terminal of NVF2L Series Drive are shown below. ◆ T1~T2 Figure 7.2.1 Schematic Diagram of Main Terminals of T1~T2 Frame Size...
  • Page 24 NVF2L Series Drive User Instruction Figure 7.2.2 Schematic Diagram of Main Terminals of Each Frame Size of the Product Table 7.2.1 Description Table of Main Circuit Terminals Terminal Terminal Function description Wiring precautions symbol name Main circuit Three-phase AC voltage input end, connected...

  • Page 25: Wiring Method Of Control Circuit

    NVF2L Series Drive User Instruction 7.3 Wiring method of control circuit Figure 7.3.1 Control Terminal and Wiring Schematic Diagram...
  • Page 26 NVF2L Series Drive User Instruction 485 communication terminal resistance setting jumper AI1 input selection, voltage input by default AO1 output selection, voltage output by default Figure 7.3.2 Layout of Control Circuit Terminals...

  • Page 27: Wiring Method

    NVF2L Series Drive User Instruction Table 7.3.1 Control Terminal Functions Type Terminal Name Description of terminal functions +10V power supplied to outside, maximum output current: +10V +10V power supply 10mA It is generally used as the working power supply of an external +10V power ground potentiometer.
  • Page 28 NVF2L Series Drive User Instruction Analog AI1 voltage input Figure 7.4.1 Wiring Diagram of Analog Voltage Input Terminal 7.4.2 Digital input terminals Sinking wiring (1) COM is the common terminal of DI1~DI5, always connected to +24V. Typical wiring mode between DI1~DI5 and outside is as follows: use +24V power supply inside the drive.

  • Page 29: First Start-Up Steps

    NVF2L Series Drive User Instruction 7.5 First start-up steps The following describes the basic setting steps required for the initial start of the drive. ◆ Process 1: Basic debugging process Figure 7.5.1 Basic Debugging Flowchart...
  • Page 30 NVF2L Series Drive User Instruction Common Parameter List Parameter Name Setting range Ex-factory value Change 0: Operation panel Run instructions F0-02 1: Terminal ○ selection 2: Communication 0: Numerical setting (without power-off memory) 1: Numerical setting (with power-off memory) 2: AI1...
  • Page 31 NVF2L Series Drive User Instruction ◆ Process 2: Self-learning process of induction motor Figure 7.5.2 Self-learning of Induction Motor...

  • Page 32: Confirmation Items Of Drive At Initial Startup

    NVF2L Series Drive User Instruction 7.6 Confirmation items of drive at initial startup Please confirm the items in Table 7.6.1 before the drive is powered on. Table 7.6.1 Confirmation Items of Drive at Initial Startup Phase Items Content Please confirm whether the input power specification is consistent with the...

  • Page 33: Usage Of Operation Panel

    NVF2L Series Drive User Instruction 7.7 Usage of operation panel 7.7.1 LED operation panel Increment Key Programming Shift Key Ok Key Down Key Run Key Stop/Reset Key Figure 7.7.1 Operation Panel Diagram ◆ Description of indicators: The indicators are divided into state indicators and unit indicators. The state indicator are described as...
  • Page 34 NVF2L Series Drive User Instruction Description of key functions: Function Description Programming Enter the level I interface/Return to the previous interface OK key Enter key (to confirm data or operation/enter the next level menu) Ascending Ascending key (to change group number, index number and parameter value)

  • Page 35: Motor Self-Learning

    NVF2L Series Drive User Instruction Press PRG key or SET key to return to level II menu when operating in the level III menu. The difference is as follows: press SET to save the set parameters, then return to level II menu and automatically transfer to the next function code;...

  • Page 36: Test Run

    NVF2L Series Drive User Instruction ◆ Self-learning steps Steps Process Step 1 The run instruction of drive is selected as panel operation (F0-02 = 0) Step 2 Accurately input the motor nameplate parameters (F2-00~F2-05) Set the motor tuning mode (F2-37), press the SET key, and the keyboard will display it...
  • Page 37 NVF2L Series Drive User Instruction Forward running direction of the motor: (counterclockwise as viewed from the load shaft) 4) Increase the set value of F0-08 to increase the motor operating frequency. When increasing the operating frequency, please confirm the responsiveness while adjusting the set value at step of 10Hz.

  • Page 38: Adjustment Of Control Performance During Test Run

    NVF2L Series Drive User Instruction 5) Press > shift key, the indicator A on the right of the panel will light up, and the panel will display the present output current. If the output current of the drive does not exceed the rated current of the motor, it is in normal state.

  • Page 39: Confirmation Table During Test Run

    NVF2L Series Drive User Instruction 11 Confirmation table during test run During the test run, please confirm according to the following steps: (1)Before the first test run Inspection Ser. No. Content Whether the correct installation and wiring is completed according to the specifications...

  • Page 40: Precautions For Repair, Maintenance And Storage

    NVF2L Series Drive User Instruction Precautions for repair, maintenance and storage Due to the influence of environmental temperature, humidity, dust and vibration, aging and wear of devices inside the drive and many other reasons, potential failures of the drive will occur. Therefore, it is necessary to carry out daily and regular maintenance of the drive.

  • Page 41: Replace Wearing Parts

    NVF2L Series Drive User Instruction The drive must be operated according to the specified use environment, and some unexpected situations may occur during operation. Users shall carry out daily maintenance according to the tips in the following table. It is a good way to prolong the service life of the drive by keeping a good operating environment, recording the daily operation data and finding the abnormity causes as soon as possible.

  • Page 42: Storage Period And Precautions

    NVF2L Series Drive User Instruction 8.4 Storage period and precautions Users must pay attention to the following for temporary storage and long-term storage after purchasing the drive: (1) Avoid storing it in places with high temperature, humidity and much dust and metal dust, and ensure good ventilation;...

  • Page 43: Troubleshooting

    NVF2L Series Drive User Instruction Troubleshooting The following fault types may be encountered during the use of this drive. Please refer to the following methods for common troubleshooting: Table 9.1.1 Common Fault Codes of the Drive and Troubleshooting Methods Fault name Panel display...
  • Page 44 NVF2L Series Drive User Instruction Fault name Panel display Troubleshooting Fault handling measures ● Confirm that the overcurrent stall suppression function (F4-19) has been enabled; ● The set value of the overcurrent stall The overcurrent stall suppression action current (F4-18) is too large, and it is...
  • Page 45 NVF2L Series Drive User Instruction Fault name Panel display Troubleshooting Fault handling measures The input voltage is too high. ● Adjust the voltage to the normal range Running motor dragged by external ● Cancel the external force or install a...
  • Page 46 NVF2L Series Drive User Instruction Fault name Panel display Troubleshooting Fault handling measures Buffer power E.RES Bus voltage fluctuates at the ● Seek technical support fault (Fault code 08) undervoltage point ● Enable the ride-through function (FE-59) Momentary power failure...
  • Page 47 NVF2L Series Drive User Instruction Fault name Panel display Troubleshooting Fault handling measures The communication parameter Fb ● Correctly set the communication Communicati E.CE group set incorrectly parameters on fault (Fault code 16) After the above detection is completed, if the fault still cannot be eliminated, you can try to restore the ex-factory settings.
  • Page 48 NVF2L Series Drive User Instruction Fault name Panel display Troubleshooting Fault handling measures The encoder parameters set incorrectly ● Correctly set the encoder parameters Excessive No parameter identification is ● Carry out motor parameter identification speed E.DEV performed deviation (Fault code 42) If the speed deviation is excessive, the ●...

  • Page 49: Warranty Period, Environmental Protection And Other Legal

    NVF2L Series Drive User Instruction Warranty period, environmental protection and other legal provisions 10.1 Warranty period Under normal storage and transportation conditions, and the product packaging is intact or the product itself is intact, the warranty period is 12 months from the date of purchase by the user or 18 months from the date of production, whichever comes first.

  • Page 50: Product Type Selection And Ordering Instructions

    NVF2L Series Drive User Instruction Product type selection and ordering instructions 11.1 Derating of the drive When selecting and using the product, user shall determine whether to derate it or not according to the actual use situation. Derating is considered mainly in the following circumstances: ◆...
  • Page 51 NVF2L Series Drive User Instruction Name Model Description Please connect AC reactor at the input end of the drive or install DC reactor at the DC reactor terminal in case of any of the following circumstances: 1. The power supply of the drive is higher than 600kVA or the power supply capacity is more than 10 times that of the drive;...
  • Page 52 NVF2L Series Drive User Instruction Please use the power supply within the 3-Phase AC allowable range of the drive power supply Because when the power supply is put into use, the Breaker drive will flow in a great impulse current, so attention shall be paid to the selection of the circuit breaker To ensure safety, please use electromagnetic contactor.
  • Page 53 NVF2L Series Drive User Instruction 11.2.1 Circuit breaker, contactor Table 11.2.2 Type selection of circuit breakers, contactors for three-phase 380V Products Recommended circuit breaker Recommended contactor Adaptive power kW Model Rated current /A Model Rated current /A 0.4 kW NB1-63 3P C4 NC8-06M 0.75 kW...
  • Page 54 NVF2L Series Drive User Instruction (1) The wiring length of the braking unit should not exceed 10 meters, and twisted-pair wires or close twin wires should be used for parallel wiring. (2) When connecting an external braking unit or an external braking resistor, change the "Overvoltage stall Notes selection"...

  • Page 55: Parameters Detailed Descriptions

    NVF2L Series Drive User Instruction Parameters detailed descriptions 12.1 F0 group Basic functions TP type setting Ex-factory value Attribute ◎ F0-00 T-type (constant torque load model) Setting range Reserved This parameter can be changed in shutdown state. After modifying this parameter, drive model and the relevant parameters of motor will be automatically modified.
  • Page 56 NVF2L Series Drive User Instruction be the modified value. 2: AI1 The frequency is given through the analog input terminal. 5: Set by pulse (DI5) The frequency is set by high-speed pulse at terminal DI5. Pulse signal specifications: voltage range 9V~30V, frequency range 0kHz~100kHz.
  • Page 57 NVF2L Series Drive User Instruction Auxiliary frequency instruction range selection upon superposition Ex-factory value Attribute ○ F0-05 Relative to the maximum frequency Setting range Relative to main frequency source X Auxiliary frequency instruction range upon superposition Ex-factory value 100% Attribute ○...
  • Page 58 NVF2L Series Drive User Instruction When the frequency source is selected as "numerical setting", value of this function code is the initial value for the frequency numerical setting of the drive. Direction of operation Ex-factory value Attribute ○ F0-09 Run in the default direction...
  • Page 59 NVF2L Series Drive User Instruction Acceleration time refers to the time required for the drive to accelerate from zero frequency to acceleration and deceleration reference frequency (determined by F0-21); Deceleration time refers to the time required for the drive to decelerate from the acceleration and deceleration reference frequency (determined by F0-21) to zero frequency.

  • Page 60: F1 Group Start-Stop Control

    NVF2L Series Drive User Instruction Parameters initialization Ex-factory value Attribute ◎ No operation Clear record information F0-28 Setting range Restore ex-factory parameters, excluding motor parameters Backup user parameters Restore user parameters 1. Clear record information Clear the fault record information, cumulative running time, cumulative power-on time and cumulative power consumption of drive.
  • Page 61 NVF2L Series Drive User Instruction Rotation speed tracking speed: The larger this parameter, the faster is the tracking; but too large a setting may cause the tracking effect to be unreliable. Starting frequency Ex-factory value 0.00Hz Attribute ○ F1-03 Setting range 0.00Hz~50.00Hz...
  • Page 62 NVF2L Series Drive User Instruction The two function codes shall meet the following requirement: F1-08 + F1-09 ≤ 100.0%. In the figure, t1 is the time period parameter defined by parameter F1-08, during which the slope of output frequency change gradually increases. T2 is the time period defined by parameter F1-09, during which the slope of output frequency changes gradually to 0.

  • Page 63: F2 Group Motor Parameters

    NVF2L Series Drive User Instruction Brake utilization rate Ex-factory value 100% Attribute ○ F1-15 Setting range 0%~100% Only valid for drives with built-in braking unit. It is used to adjust the duty ratio of the braking unit. If the braking utilization rate is high, the braking unit will have a high action duty ratio and a strong braking effect, but the bus voltage of the drive fluctuates greatly during braking.

  • Page 64: F3 Group Vector Control Parameters

    NVF2L Series Drive User Instruction Tuning selection Ex-factory value Attribute ◎ 0 No operation F2-37 1 Partial static parameters tuning of asynchronous machine Setting range 2 Complete dynamic tuning of asynchronous machine 3 Complete static tuning of asynchronous machine Before parameters self-learning, motor type and nameplate parameters F2-00~F2-05 shall be set correctly, and encoder type (Fd-01) and pulse number (Fd-00) shall be set additionally for closed-loop vector control.
  • Page 65 NVF2L Series Drive User Instruction By setting the proportional gain and integration time of the speed loop, the speed dynamic response characteristics of vector control can be adjusted. Increasing proportional gain and reducing integration time can speed up the dynamic response of speed loop. However, too large proportional gain or too short integration time may cause system oscillation.
  • Page 66 NVF2L Series Drive User Instruction Upper limit source of torque in speed control Ex-factory value Attribute ◎ F3-11 setting Reserved F3-10 Reserved Setting range DI5 pulse setting Communication setting Reserved Reserved Numerically set upper limit of torque Ex-factory value 150.0% Attribute ○...
  • Page 67 NVF2L Series Drive User Instruction Excitation regulation proportional gain Ex-factory value 2000 Attribute ○ F3-14 Setting range 0~60000 Excitation regulation integral gain Ex-factory value 1300 Attribute ○ F3-15 Setting range 0~60000 Torque regulation proportional gain Ex-factory value 2000 Attribute ○...
  • Page 68 NVF2L Series Drive User Instruction Upper limit source of torque in torque control Ex-factory value Attribute ◎ Numerical setting (F3-27) Reserved F3-25 Reserved Setting range DI5 pulse setting Communication setting Reserved Reserved Upper limit of torque in torque control Ex-factory value 150.0%...

  • Page 69: F4 Group V/F Control Parameters

    NVF2L Series Drive User Instruction 12.5 F4 group V/F control parameters V/F curve setting Ex-factory value Attribute ◎ Linear V/F Multipoint V/F F4-00 Setting range Reserved V/F complete separation mode V/F semi-separation mode 0: Linear V/F Suitable for ordinary constant torque load 1: multipoint V/F Suitable for special loads such as dehydrators and centrifuges;...
  • Page 70 NVF2L Series Drive User Instruction Multipoint V/F frequency point F1 Ex-factory value 0.00Hz Attribute ◎ F4-03 Setting range 0.00 Hz~F4.05 Multipoint V/F voltage point V1 Ex-factory value 0.0% Attribute ◎ F4-04 Setting range 0.0%~100.0% Multipoint VF frequency point F2 Ex-factory value 0.00Hz...
  • Page 71 NVF2L Series Drive User Instruction V/F slip compensation gain Ex-factory value 0.0% Attribute ○ F4-09 Setting range 0%~200.0% VF slip compensation can compensate the motor speed deviation of asynchronous motor generated when the load increases, so that the motor speed can basically remain stable when the load changes.
  • Page 72 NVF2L Series Drive User Instruction Voltage source of V/F separation Ex-factory value Attribute ○ Numerical setting (F4-14) Reserved Reserved F4-13 Setting range Pulse setting DI5 Multi-segment instruction Simple PLC Communication setting Voltage numerical setting for VF separation Ex-factory value Attribute ○...
  • Page 73 NVF2L Series Drive User Instruction Same as the frequency acceleration and deceleration time, the voltage rise (drop) time refers to the time required to accelerate (decelerate) from zero voltage (motor rated voltage) to the motor rated voltage (zero voltage), not the time to accelerate (decelerate) from zero voltage (target voltage) to the target voltage (zero voltage).
  • Page 74 NVF2L Series Drive User Instruction When F4-21 is set to 50%, it means that the double-speed overcurrent stall action current compensation coefficient does not work. Overvoltage stall action voltage Ex-factory value As per model Attribute ◎ F4-22 380V model: 650.0V~800.0V Setting range 220V model: 320.0V~800.0V...

  • Page 75: F5 Group Input Terminals

    NVF2L Series Drive User Instruction 12.6 F5 group input terminals NVF2L Series Drive comes standard with five multi-function digital input terminals (in which DI5 can be used as high-speed pulse input terminal) and one analog input terminal. The following functions can be set for each input terminal.
  • Page 76 NVF2L Series Drive User Instruction Function Notes value Acceleration and Maintain the current output frequency (except the stop command). deceleration disabled PID pause The drive maintains the current output frequency and pauses PID adjustment. Simple PLC state reset Restore the drive to the initial state of simple PLC...
  • Page 77 NVF2L Series Drive User Instruction Function Notes value The drive is in the fastest deceleration state, at which the deceleration current and Emergent stop voltage are in the maximum limit state. External stop terminal When this terminal state is valid, the drive enters the stop by deceleration state, and the deceleration time is deceleration time 4.
  • Page 78 NVF2L Series Drive User Instruction DI terminal filtering time Ex-factory value 0.010s Attribute ○ F5-10 Setting range 0.000s~1.000s Used to set the filtering time of DI terminal. Reducing this parameter can speed up the response of the DI terminal, but will reduce its anti-interference ability. Increasing this parameter can enhance the anti-interference ability, but will slow down the response of DI terminal.
  • Page 79 NVF2L Series Drive User Instruction The function code is set as follows: Function code Name Set value Parameter description F0-02 Run command channel selection Terminal control F5-11 Terminal control mode selection Two-line type 2 F5-00 DI1 terminal function selection Forward (acting as "operation enabled")
  • Page 80 NVF2L Series Drive User Instruction 3: Three-line control mode 2: In this mode, the DI3 terminal is the running enabling terminal, the run command is issued by DI1, and the direction is determined by the state of DI2. As shown in the figure below, in this control mode, when the SB1 button is closed, press the SB2 button to run the drive, open K for forward rotation of the drive and close K for reverse rotation of the drive.
  • Page 81 NVF2L Series Drive User Instruction The setting of AI curve is actually to set the relationship between analog input voltage (or analog input current) and its representative set frequency. When AI is set as frequency, 100.0% of the corresponding setting of voltage or current input refers to the relative (with respect to maximum output frequency F0-10) percentage.
  • Page 82 NVF2L Series Drive User Instruction Please refer to the description of curve 1 for the function and usage of curve 3. Minimum frequency of pulse input Ex-factory value 0.00KHz Attribute ○ F5-28 Setting range 0.00KHz~F5-30 Corresponding setting of minimum frequency of pulse input Ex-factory value 0.00%...
  • Page 83 NVF2L Series Drive User Instruction This function code is used to set the delay time for DI terminal to change its state. At present, DI4 and DI5 do not have this function. DI terminal effective mode selection Ex-factory value 00000 Attribute ◎...

  • Page 84: F6 Group Output Terminals

    NVF2L Series Drive User Instruction 7. Save parameter V1 in parameter F5-41, V2 in parameter F5-42, V3 in parameter F5-43 and V4 in parameter F5-44 12.7 F6 group output terminals Function selection for relay RO1 Ex-factory value Attribute ○ F6-02...
  • Page 85 NVF2L Series Drive User Instruction Function Notes value Running at zero speed 2 When the output frequency of the drive is 0, the ON signal is output. This signal (also output when stopped) is also ON in stopped state. Cumulative power-on time...
  • Page 86 NVF2L Series Drive User Instruction The analog output AO1 ranges from 0V to 10V, or from 0mA to 20mA. The calibration relationship between the range of pulse output or analog output and the corresponding function is shown in the following table: Functional scope (corresponding to 0.0%~100.0% of pulse...

  • Page 87: F7 Group Keyboard And Display

    NVF2L Series Drive User Instruction The above function code is used to set the delay time from occurrence of the state of relay 1 to the actual change of the output. Valid state selection of DO output terminal Ex-factory value...
  • Page 88 NVF2L Series Drive User Instruction LED running display parameter 1 Ex-factory value Attribute ○ F7-04 Setting range 0000~FFFF LED running display parameter 2 Ex-factory value Attribute ○ F7-05 Setting range 0000~FFFF...
  • Page 89 NVF2L Series Drive User Instruction Running displayed parameters: used to set the parameters that can be viewed when the drive is running. The maximum number of state parameters available for viewing is 32. Select the state parameters to be displayed according to the binary digits of the parameter values F7-04 and F7-05, and the display order starts from the lowest digit of F7-04.

  • Page 90: F8 Group Auxiliary Functions

    NVF2L Series Drive User Instruction Display selection of function parameter groups Ex-factory value Attribute ◎ Units place Display selection of U group Not displayed F7-09 Displayed Setting range Tens place Display selection of A group Not displayed Displayed Parameter change attribute...
  • Page 91 NVF2L Series Drive User Instruction Deceleration time 4 Ex-factory value 0.0s Attribute ○ 0.00s~650.00s (F0-19=2) F8-08 Setting range 0.0s~6500.0s (F0-19=1) 0s~65000s (F0-19=0) Through different combinations of multi-function digital input terminals DI, you can switch among acceleration and deceleration time 1 to acceleration and deceleration time 4. Please refer to the DI function description for specific usage.
  • Page 92 NVF2L Series Drive User Instruction Reverse frequency disabling Ex-factory value Attribute ○ F8-13 Invalid Setting range Valid This parameter is used to set whether the motor is allowed to run in reverse direction. If the motor is not allowed to run in reverse direction, it is necessary to validate the reverse frequency disabling.
  • Page 93 NVF2L Series Drive User Instruction When the cumulative power-on time (U0-80) of the drive reaches this parameter, the multi-function digital output (DO) can be set to output the ON signal. Cumulative running setting Ex-factory value Attribute ◎ F8-17 Setting range...
  • Page 94 NVF2L Series Drive User Instruction When the operating frequency of the drive reaches between (set frequency - frequency reaching detection width) and (set frequency + frequency reaching detection width), the multi-function DO of the drive outputs the ON signal. This parameter is the percentage relative to the maximum frequency, and the frequency reaching function is shown below: Selection of validity of jump frequency during acceleration and deceleration Ex-factory value 0 Attribute ○...
  • Page 95 NVF2L Series Drive User Instruction During acceleration, when the operating frequency is less than F8-25, select acceleration time 2; When the operating frequency is greater than F8-25, select acceleration time 1. During deceleration, when the operating frequency is less than F8-26, select acceleration time 2; When the operating frequency is greater than F8-26, select acceleration time 1.
  • Page 96 NVF2L Series Drive User Instruction When the output current of the drive is less than or equal to the zero current detection level and the duration exceeds the zero current detection delay time, the multi-function DO of the drive outputs the ON signal. The...
  • Page 97 NVF2L Series Drive User Instruction Any reaching current 1 Ex-factory value 100.0% Attribute ○ F8-38 Setting range 0.0%~300.0% (motor rated current) Any reaching current 1 amplitude Ex-factory value 0.0% Attribute ○ F8-39 Setting range 0.0%~300.0% (motor rated current) Any reaching current 2 Ex-factory value 100.0%...
  • Page 98 NVF2L Series Drive User Instruction If the function of <AI1 input overrun> is selected for digital multi-function DO output, DO outputs the ON signal when the analog AI1 input voltage (after calibration) is greater than F8-46 or the AI1 input is less than F8-45.

  • Page 99: F9 Group Pid Function

    NVF2L Series Drive User Instruction PWM modulation mode Ex-factory value Attribute ○ F8-56 Asynchronous modulation Setting range Synchronous modulation Under the V/F control mode, when the output frequency of the drive is high, in order to ensure the output voltage quality, synchronous modulation shall be selected, so that the carrier frequency changes with the output frequency and the carrier ratio remains unchanged.
  • Page 100 NVF2L Series Drive User Instruction This function code is used to set the target quantity setting channel of process PID. The set target quantity of process PID is a relative value, in the range of 0.0%~100.0%. Similarly, the feedback quantity of PID is also a relative quantity, and the function of PID is to make these two relative quantities the same.
  • Page 101 NVF2L Series Drive User Instruction 3) Differential time Td1: This parameter determines the regulation strength of PID regulator on deviation change rate. The longer the differential time, the greater the regulation strength. The differential time means that when the feedback quantity changes by 100.0% during this time, the regulation quantity of differential regulator is the maximum...
  • Page 102 NVF2L Series Drive User Instruction PID parameter switching deviation 2 Ex-factory value 80.0% Attribute ○ F9-20 Setting range F9-19~100.0% In some applications, one group of PID parameters can not meet the needs of the whole operation process, so different PID parameters need to be adopted in different situations.
  • Page 103 NVF2L Series Drive User Instruction Positive maximum value of deviation between two outputs Ex-factory value 1.00% Attribute ○ F9-23 Setting range 0.00%~100.00% Negative maximum value of deviation between two outputs Ex-factory value 1.00% Attribute ○ F9-24 Setting range 0.00%~100.00% This group of parameters is used to limit the difference between the two PID control outputs, so as to achieve the effect of restraining the PID output from changing too fast.
  • Page 104 NVF2L Series Drive User Instruction PID overshoot detection value Ex-factory value 0.0% Attribute ○ F9-29 Setting range 0.0%: feedback overshoot is not judged; 0.1%~100.0% PID overshoot detection time Ex-factory value 0.0s Attribute ○ F9-30 Setting range 0. 0s~20.0s This function code is used to set whether to detect PID feedback overshoot.

  • Page 105: Fa Group Multi-Segment Instructions, Simple Plc Function

    NVF2L Series Drive User Instruction 12.11 FA group multi-segment instructions, simple PLC function The multi-segment instructions of NVF2L have more functions than the usual multi-segment speed. In addition to realizing the multi-segment speed function, it can also be used as the voltage source of VF separation and the setting source of process PID.
  • Page 106 NVF2L Series Drive User Instruction Multi-segment instruction 13 Ex-factory value 0.0% Attribute ○ FA-13 Setting range -100.0%~100.0% Multi-segment instruction 14 Ex-factory value 0.0% Attribute ○ FA-14 Setting range -100.0%~100.0% Multi-segment instruction 15 Ex-factory value 0.0% Attribute ○ FA-15 Setting range -100.0%~100.0%...
  • Page 107 NVF2L Series Drive User Instruction 2: Keep cycling After completing a cycle, the drive will automatically start the next cycle. Simple PLC power-off memory selection Ex-factory value Attribute ○ Units place Power-off memory selection No power-off memory FA-17 With power-off memory...
  • Page 108 NVF2L Series Drive User Instruction Selection of acceleration and deceleration time in Ex-factory value Attribute ○ simple PLC segment 5 FA-29 Setting range Same as FA-19 Running time of simple PLC segment 6 Ex-factory value 0.0s(h) Attribute ○ FA-30 Setting range 0.0s(h)~6500.0s(h)

  • Page 109: Fb Group Communication Parameters

    NVF2L Series Drive User Instruction Running time of simple PLC segment 15 Ex-factory value 0.0s(h) Attribute ○ FA-48 Setting range 0.0s(h)~6500.0s(h) Selection of acceleration and deceleration time in Ex-factory value Attribute ○ simple PLC segment 15 FA-49 Setting range Same as FA-19...
  • Page 110 NVF2L Series Drive User Instruction This parameter is used to set the data transmission rate between the main station computer and the drive. Note that the baud rates set by the main station computer and the drive must be consistent, otherwise communication cannot be carried out.

  • Page 111: Fe Group Faults And Protections

    NVF2L Series Drive User Instruction Non-standard Modbus protocol and standard Modbus protocol have the following differences when returning communication error codes and data reading instructions: Return communication error code Return data reading instruction Byte Non-standard Standard Byte Non-standard Standard Slave address...
  • Page 112 NVF2L Series Drive User Instruction As shown in the figure, the the marked running current points correspond to motor overload protection time, and the time between two points is obtained by linear calculation. Example: At 145% current, the time for reporting OL1 is 6 minutes; at 155% current, the time for reporting OL1 is 4 minutes, then at 150% current, the time for reporting OL1 time is T = 6 + (4 - 6)*(150% –...
  • Page 113 NVF2L Series Drive User Instruction (1.414Vs+30) ≤ Vbreak ≤ 800 Vs: AC power supply voltage input to the drive Note: Improper setting of this voltage may lead to abnormal operation of the built-in braking unit! Fault automatic reset times Ex-factory value Attribute ○...
  • Page 114 NVF2L Series Drive User Instruction Type of the first fault Ex-factory value Attribute ● FE-14 Setting range 0~99 Type of the second fault Ex-factory value Attribute ● FE-15 Setting range 0~99 Type of the third fault Ex-factory value Attribute ●...
  • Page 115 NVF2L Series Drive User Instruction State of fault before the previous fault Frequency at the first fault Ex-factory value Attribute ● FE-37 Setting range 0.00Hz~655.35Hz Current at the first fault Ex-factory value Attribute ● FE-38 Setting range 0.00A~655.35A Bus voltage at the first fault...
  • Page 116 NVF2L Series Drive User Instruction Fault protection action Ex-factory value Attribute ○ selection 2 Units place Reserved Reserved Tens place Abnormality in parameter reading and writing Free stop FE-48 Stop by stopping mode Setting Hundreds range Run-time PID feedback overshoot (same as FE-47 units place)
  • Page 117 NVF2L Series Drive User Instruction When a fault occurs during running of the drive, and the handling mode of this fault is set to continued running, the drive displays A.xxx and runs at the frequency determined by FE-54. When the abnormal standby frequency is selected for running, the value set by FE-55 is the percentage relative to the maximum frequency.
  • Page 118 NVF2L Series Drive User Instruction abnormal (in a large inertia system, it takes a long time for the motor to stop freely, and when the power supply of the power grid is restored, as the motor is still rotating at high speed, it is easy to cause overload or overcurrent fault of the drive when the motor is started).

  • Page 119: A0 Group Terminal Expansion Functions

    NVF2L Series Drive User Instruction Software input open-phase sensitivity Ex-factory value Attribute ○ FE-74 Setting range 1%~50% Software input open-phase filtering Ex-factory value Attribute ○ FE-75 Setting range 1~50 Overcurrent slip time Ex-factory value Attribute ○ FE-76 Setting range 0.1~30.0min...

  • Page 120: U0 Group Monitoring Parameters

    NVF2L Series Drive User Instruction AI1 setting jump point Ex-factory value 0.0% Attribute ○ A0-24 Setting range -100.0%~100.0% AI1 setting jump amplitude Ex-factory value 0.1% Attribute ○ A0-25 Setting range 0.0%~100.0% Each analog input AI1 has the set value jump function, which refers to fixing the analog quantity corresponding set value as the value of the jump point when the analog quantity corresponding set value changes within the upper and lower interval of the jump point.
  • Page 121 NVF2L Series Drive User Instruction Parameter Function Parameter range Notes number Display the output power (active power) of the drive during U0-05 Output power 0.0KW~6553.5KW running U0-06 Output torque -200.0%~200.0% Display the percentage output value of motor rated torque Display DI state, and convert it into binary correspondence (1...
  • Page 122 NVF2L Series Drive User Instruction Parameter Function Parameter range Notes number Auxiliary U0-31 frequency 0.00~500.00Hz Auxiliary frequency display display U0-32 Reserved U0-33 Reserved Motor When AI3 is connected to the motor temperature sensor, U0-34 0℃~200℃ temperature display the motor temperature...
  • Page 123 NVF2L Series Drive User Instruction Parameter Function Parameter range Notes number Display running frequency in percentage, with 100.0% with U0-60 Reserved -100.0%~100.0% respect to maximum frequency Display the operating state information of the drive and convert it into a binary correspondence table...

  • Page 124: Modbus Communication

    NVF2L Series Drive User Instruction 12.16 MODBUS communication 1) Networking mode This drive has RS485 communication interface and adopts international standard Modbus communication protocol for master-slave communication. Users can realize centralized control through PC/PLC and main station computer monitoring software, etc. (setting the control command and operating frequency of the drive, modifying the parameters of relevant function codes, and monitoring the working state and fault information of the drive, etc.) to meet specific application requirements.
  • Page 125 NVF2L Series Drive User Instruction The "common terminal" circuit (the common terminal of signal and optional power supply) must be directly connected to the protective ground, and it is best to ground the whole bus at a single point. Usually, this point can be selected on the master station or its splitter.
  • Page 126 NVF2L Series Drive User Instruction Check code: CRC-16 is used for data check, with the whole frame information checked, and the low byte of check data will be sent before the high byte. Communication example: Communication 0x03 function code reads F0-08 data.
  • Page 127 NVF2L Series Drive User Instruction Definitions of communication fault codes: Ser. No. Communication fault code Fault description 0x01 Illegal command 0x02 Illegal address 0x03 Illegal data 0x04 Other errors (CRC error, parameter read-only, parameter locking, etc.) 5) Function code parameter address representation rule...
  • Page 128 NVF2L Series Drive User Instruction Command Address Command function 0000: No command 0001: Forward running 0002: Reverse running 0003: Stop by deceleration Control command 3200H 0004: Forward inching 0005: Reverse inching 0006: Reserved 0007: Free stop 0008: Fault reset BIT0: Reserved...
  • Page 129 NVF2L Series Drive User Instruction Stop/Running parameters: Parameter address Parameter description Parameter address Parameter description 3400H Output frequency 3411H PLC step 3401H Set frequency 3412H Count value input 3402H Bus voltage 3413H Length value input 3403H Output voltage 3414H Feedback speed, in 0.1Hz...

  • Page 130: Parameters Summary

    NVF2L Series Drive User Instruction Parameters Summary "○": indicating that the set value of this parameter can be changed when the drive is stopped or running; "◎": indicating that the set value of this parameter cannot be changed when the VFD is running;...
  • Page 131 NVF2L Series Drive User Instruction F0 group Basic functions 0: Main + Auxiliary Frequency instruction superposition 1: Main - Auxiliary F0-07 ○ selection 2: Larger of the two 3: Smaller of the two F0-08 Preset frequency 0.00Hz~maximum frequency (F0-10) 50.00Hz ○...
  • Page 132 NVF2L Series Drive User Instruction F1 group start-stop control 0: direct startup 1: Speed tracking and restart F1-00 Startup mode ○ 2: reserved 3: reserved 0: Starting from the stop frequency F1-01 Speed tracking mode 1: Starting from the power frequency ◎...
  • Page 133 NVF2L Series Drive User Instruction F2 group motor parameters 0.001Ω~65.535Ω (drive power ≤55kW) Tuning F2-06 Stator resistance of asynchronous motor ◎ 0.0001Ω~6.5535Ω (drive power >55kW) parameter 0.001Ω~65.535Ω (drive power ≤55kW) Tuning F2-07 Rotor resistance of asynchronous motor ◎ 0.0001Ω~6.5535Ω (drive power >55kW) parameter 0.01mH~655.35mH (drive power ≤55kW)
  • Page 134 NVF2L Series Drive User Instruction F3 group vector control parameters 4: DI5 setting pulse 5: Communication setting 6: Reserved 7: Reserved 8: Set by parameter F3-13 The full range of options 1-8 corresponds to F3-13. Numerical setting of upper limit of torque in...
  • Page 135 NVF2L Series Drive User Instruction F4 group V/F control parameters 0: Linear V/F 1: multipoint V/F F4-00 V/F curve setting 2~9: Reserved ◎ 10: V/F complete separation mode 11: V/F semi-separation mode 0.0%: (automatic torque boost) As per F4-01 Torque boost ○...
  • Page 136 NVF2L Series Drive User Instruction F4 group V/F control parameters 220V model: 380V 0: invalid F4-23 Overvoltage stall enabled 1 (valid) ◎ 1: valid F4-24 Overvoltage stall suppression frequency gain 0~100 ○ F4-25 Overvoltage stall suppression voltage gain 0~100 ○...
  • Page 137 NVF2L Series Drive User Instruction F5 group input terminals 31: Reserved 32: Immediate DC braking 33: External fault NC input 34: Frequency modification enabled 35: PID action direction reversed 36: External stop terminal 1 37: Control command switch terminal 2...
  • Page 138 NVF2L Series Drive User Instruction F5 group input terminals F5-27 Reserved ○ F5-28 Minimum frequency of pulse input 0.00kHz~F5-30 0.00kHz ○ Corresponding setting of minimum input F5-29 -100.0%~100.0% 0.0% ○ frequency of pulse F5-30 Maximum frequency of pulse input F5-28~100.00kHz 50.00kHz...
  • Page 139 NVF2L Series Drive User Instruction F5 group input terminals F5-52 Reserved ○ F5-53 Reserved ○ F5-54 Reserved ○ F5-55 Reserved ○ F5-56 Reserved ○ F6 group digital output terminal DO F6-00 Reserved ○ 0: No output F6-01 Reserved ○ 1: Drive running F6-02 Control panel relay function selection Relay 1 ○...
  • Page 140 NVF2L Series Drive User Instruction F6 group digital output terminal DO 40: Current running time reached F6-05 Reserved 41: Fault (free stop fault and no output undervoltage) 0: Operating frequency F6-06 Reserved ○ 1: Set frequency F6-07 AO1 output function selection ○...
  • Page 141 NVF2L Series Drive User Instruction F6 group digital output terminal DO correction F6-28 Reserved ○ F6-29 Reserved ○ F6-30 Reserved ○ F6-31 Reserved ○ F6-32 Reserved ○ F6-33 Reserved ○ F6-34 Reserved ○ F6-35 Reserved ○ F7 group keyboard and display...
  • Page 142 NVF2L Series Drive User Instruction F7 group keyboard and display Bit14: Main frequency X display (Hz) F7-05 Running display parameter 2 ○ Bit15: Auxiliary frequency Y display (Hz) 0000~FFFF Bit00: Set frequency (Hz) Bit01: Bus voltage (V) Bit02: DI input state...
  • Page 143 NVF2L Series Drive User Instruction F8 group enhanced functions 0.00s~650.00s(F0-19=2) As per F8-06 Deceleration time 3 0.0s~6500.0s(F0-19=1) ○ model 0s~65000s(F0-19=0) 0.00s~650.00s(F0-19=2) F8-07 Acceleration time 4 0.0s~6500.0s(F0-19=1) 0.0s ○ 0s~65000s(F0-19=0) 0.00s~650.00s(F0-19=2) F8-08 Deceleration time 4 0.0s~6500.0s(F0-19=1) 0.0s ○ 0s~65000s(F0-19=0) F8-09 Jump frequency 1 0.00Hz~ maximum frequency...
  • Page 144 NVF2L Series Drive User Instruction F8 group enhanced functions F8-40 Any reaching current 2 0.0%~300.0% (motor rated current) 100.0% ○ F8-41 Any reaching current 2 amplitude 0.0%~300.0% (motor rated current) 0.0% ○ F8-42 Selection of timing function 0: Invalid 1: Valid ◎...
  • Page 145 NVF2L Series Drive User Instruction F9 group PID function 0: F9-01setting 1: AI1 2: Reserved F9-00 PID setting source 3: Reserved ○ 4: Pulse setting (DI5) 5: Communication setting 6: Multi-segment instruction setting F9-01 PID numerical setting 0.0%~100.0% 50.0% ○...
  • Page 146 NVF2L Series Drive User Instruction F9 group PID function 0: Continue integration 1: Stop integration 0.0%: feedback loss is not judged F9-26 PID feedback loss detection value 0.0% ○ 0.1%~100.0% F9-27 PID feedback loss detection time 0.0s~20.0s 0.0s ○ 0: No operation when stopped F9-28 PID stop with operation ○...
  • Page 147 NVF2L Series Drive User Instruction FA group multi-segment instruction, simple PLC Selection of acceleration and deceleration 2: Acceleration and deceleration time 3 FA-19 ○ time of simple PLC segment 0 3: Acceleration and deceleration time 4 FA-20 Running time of simple PLC segment 1 0.0s(h)~6500.0s(h)
  • Page 148 NVF2L Series Drive User Instruction FA group multi-segment instruction, simple PLC 0: Parameter FA-00 setting 1: AI1 2: Reserved 3: Reserved FA-51 Multi-segment instruction 0 setting mode ○ 4: Pulse setting DI5 5: PID 6: Preset frequency (F0-08) setting, and...
  • Page 149 NVF2L Series Drive User Instruction FE group faults and protections 0: Disabled FE-00 Motor overload protection selection ○ 1: Enabled FE-01 Motor overload protection gain 0.20~10.00 1.00 ○ FE-02 Motor overload warning coefficient 50%~100% ○ FE-03 Reserved ○ FE-04 Reserved ◎...
  • Page 150 NVF2L Series Drive User Instruction FE group faults and protections 2: Accelerated overcurrent 3: Decelerated overcurrent 4: Constant speed overcurrent 5: Accelerated overvoltage 6: Decelerated overvoltage 7: Constant speed overvoltage 8: Buffer resistor overload 9: Undervoltage 10: Drive overload 11: Motor overload...
  • Page 151 NVF2L Series Drive User Instruction FE group faults and protections FE-30 Input terminal state at the second fault 0~9999 ● FE-31 Output terminal state at the second fault 0~9999 ● FE-32 Drive state at the second fault 0~65535 ● FE-33 Power-on time at the second fault 0s~65535s ●...
  • Page 152 NVF2L Series Drive User Instruction FE group faults and protections 1: Stop by stopping mode 2: Continue running Thousands place: load loss (E.LL) 0: Free stop 1: Stop by deceleration 2: Directly jump to 7% of the rated frequency of the motor to continue running, and...
  • Page 153 NVF2L Series Drive User Instruction FE group faults and protections FE-72 Detection value of excessive speed deviation 0.0% ~50.0% ( maximum frequency ) 20.0% ○ 0.0s: Not detected FE-73 Detection time of excessive speed deviation 5.0s ○ 0.1~60.0s FE-74 Software input open-phase sensitivity 1~50 ○...
  • Page 154 NVF2L Series Drive User Instruction U0 group basic monitoring parameters Communication Parameter Name Minimum unit address U0-00 Operating frequency (Hz) 0.01Hz 7000H U0-01 Set frequency (Hz) 0.01Hz 7001H U0-02 Bus voltage (V) 0.1V 7002H U0-03 Output voltage (V) 7003H 0.01A (drive power ≤55kW)
  • Page 155 NVF2L Series Drive User Instruction U0 group basic monitoring parameters Communication Parameter Name Minimum unit address U0-44 Reserved U0-45 Reserved U0-46 Reserved U0-47 Reserved U0-48 Reserved U0-49 Reserved U0-50 Reserved U0-51 Reserved U0-52 Reserved U0-53 Reserved U0-54 Reserved U0-55 Reserved...
  • Page 156 NVF2L Series Drive User Instruction Product and User Related Information Product name Product model and specification: Product body (or packaging box) barcode (18 digits or 19 digits): Date of ex-factory: Date of purchase: Buyer (User): Tel: Address: Distributor (Agent): Tel: Address: Note 1: This card is the product warranty certificate, please keep it properly.
  • Page 157 NVF2L Series Drive User Instruction QC PASS NVF2L Series Drive IEC 61800-3 JIAN 05 Test date: Please see the packing ZHEJIANG CHINT ELECTRICS CO., LTD.
  • Page 158 NVF2L Series Drive User Instruction Zhejiang Chint Electrics Co., Ltd. Add: No.1, CHINT Road, CHINT Industrial Zone,North Baixiang, Yueqing, Zhejiang 325603,P.R.China E-mail: global-sales@chint.com Website: http://en.chint.com 0463v1666.EN...

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