MOLLOM VFD 0.75KW 1HP G70 Variable Frequency Drive Instruction Manual

1. Introduction

This manual provides detailed instructions for the installation, operation, and maintenance of the MOLLOM 0.75KW 1HP G70 Variable Frequency Drive (VFD). This VFD is designed to control the speed of three-phase AC motors, offering precise control for applications such as CNC routers, milling machines, drilling machines, and various other industrial equipment. It supports both single-phase and three-phase 220V input and provides a three-phase 220V output with a frequency range of 0-3000 Hz.

Key features include a user-friendly keyboard design, digital display, RS485 communication port, and strong anti-jamming capability. Please read this manual thoroughly before installation and operation to ensure safe and efficient use of the device.

2. Safety Instructions

Electrical Safety:

• Ensure all power is disconnected before performing any wiring or maintenance.
• Only qualified personnel should install and service this equipment.
• Proper grounding is essential to prevent electric shock.
• The frequency converter must be directly connected to the motor. Control of motor start and stop must be managed by the frequency converter to prevent damage.

Environmental Conditions:

• Avoid installation in environments with excessive humidity, water mist, water droplets, or where metal objects could fall into the unit, as this may cause short circuits.
• Ensure adequate ventilation around the VFD for proper heat dissipation.

Important Note: This VFD does not support external resistors. For heavy load motors, consider a higher power level VFD or consult technical support for model selection.

3. Product Overview

3.1. Physical Appearance

3.2. Dimensions

3.3. Control Panel Layout

3.4. Removable Keyboard

4. Installation

4.1. Mounting

Mount the VFD in a vertical position on a flat, stable surface. Ensure sufficient clearance around the unit for proper airflow and heat dissipation. Avoid mounting in direct sunlight or near heat sources.

4.2. Wiring Instructions

Refer to the wiring diagram and the video for correct connections. Ensure all connections are secure and properly insulated.

• Input Power (R, S, T): For single-phase 220V input, connect to any two of the R, S, T terminals. For three-phase 220V input, connect to R, S, T terminals.
• Motor Output (U, V, W): Connect the three-phase motor wires to the U, V, W terminals.
• Grounding: Connect the ground wire to the designated grounding terminal.
• Control Terminals: The VFD supports various control terminals for external switches, potentiometers, and RS485 communication. Refer to the detailed terminal block for specific connections.

4.3. RS485 Communication

For RS485 communication, connect RS485+ and RS485- to the corresponding terminals. If the control device requires a power supply, connect GND and 24V terminals.

5. Operation

5.1. Basic Controls

• PRG (Programming/Return): Enters or exits programming mode.
• ENTER: Confirms parameter settings.
• UP/DOWN Arrows: Navigates through parameters and adjusts values.
• SHIFT: Moves the cursor during parameter editing.
• RUN: Starts the motor.
• STOP/RST: Stops the motor or resets errors.
• MF.K (Function/Jog): Multi-function key, often used for jogging or specific functions.
• Potentiometer: Adjusts output frequency/speed in real-time.

5.2. Parameter Setting

The VFD requires specific parameter settings to match your motor's characteristics. The following are examples for a 380V motor. Always set parameters according to your motor's nameplate data.

General Steps for Parameter Setting:

1. Press the PRG button to enter programming mode (Display F0.00).
2. Use UP/DOWN arrows to navigate to the desired parameter group (e.g., F1-xx).
3. Press ENTER to select the parameter group.
4. Use UP/DOWN arrows to select the specific parameter (e.g., F1-01).
5. Press ENTER to view the current value.
6. Use UP/DOWN arrows and SHIFT to adjust the value.
7. Press ENTER to save the new value.
8. Press PRG to exit programming mode.

Example Parameter Settings (Refer to Video 1 for demonstration):

• F1-01 (Motor Power): Set according to your motor's power (e.g., 2.2 for 2.2KW).
• F1-02 (Motor Voltage): Set according to your motor's rated voltage (e.g., 380 for 380V).
• F1-03 (Motor Current): Set according to your motor's rated current (e.g., 7 for 7A).
• F1-04 (Motor Frequency): Set according to your motor's rated frequency (e.g., 60 for 60Hz).
• F1-05 (Motor RPM): Set according to your motor's rated RPM (e.g., 3450 for 3450 RPM).

6. Specifications

7. Maintenance

Regular maintenance ensures the longevity and optimal performance of your VFD.

• Cleaning: Keep the VFD clean and free from dust and debris. Use a soft, dry cloth for cleaning. Do not use liquid cleaners.
• Ventilation: Ensure that the cooling fan and ventilation openings are not obstructed. Periodically check for dust buildup in the fan and heatsink.
• Connections: Periodically check all wiring connections for tightness and signs of wear or corrosion. Loose connections can lead to overheating or malfunction.
• Environment: Maintain the operating environment within specified temperature and humidity ranges. Avoid exposure to corrosive gases or liquids.

8. Troubleshooting

This section provides solutions to common issues. For complex problems, contact technical support.

• Motor Not Starting:
  • Check input power supply.
  • Verify motor wiring (U, V, W) is correct and secure.
  • Ensure VFD parameters (F1-01 to F1-05) match motor nameplate data.
  • Check if the RUN command is active (e.g., pressing the RUN button or external control signal).
• Motor Running at Incorrect Speed:
  • Check the frequency setting (potentiometer or digital input).
  • Verify F1-04 (Motor Frequency) is set correctly.
  • Ensure the control mode (e.g., V/F control, vector control) is appropriate for the application.
• VFD Displays Error Code:
  • Refer to the VFD's specific error code list (not provided in this manual, but typically found in the full product manual).
  • Common errors include overcurrent, overvoltage, undervoltage, and overload. Address the underlying cause (e.g., motor overload, unstable power supply).
• VFD Overheating:
  • Check for proper ventilation and clear any obstructions around the VFD.
  • Ensure ambient temperature is within operating limits.
  • Verify the motor load is not exceeding the VFD's capacity.
• Communication Issues (RS485):
  • Check RS485+ and RS485- wiring for correct polarity and secure connections.
  • Verify communication parameters (baud rate, parity, data bits) are correctly set on both the VFD and the control device.
  • Ensure proper termination resistors are used if necessary.

9. Technical Support

If you encounter difficulties with parameter settings or require assistance with your motor, please contact MOLLOM technical support. Provide specific motor parameters or a photo of your motor's nameplate for accurate guidance.