1. Introduction
This manual provides essential information for the safe and efficient operation of your perdnmkg SU300-4R0G2 Frequency Converter. This device is designed to convert single-phase 220V input power into three-phase 220V output power, allowing for precise speed control of 4KW (4Hp) three-phase motors. Please read this manual thoroughly before installation, operation, or maintenance.
2. Safety Information
Warning: Improper installation or operation can lead to serious injury or equipment damage. Always observe the following safety precautions:
- Ensure all power is disconnected before performing any wiring or maintenance.
- Only qualified personnel should install, operate, and maintain this equipment.
- Do not touch electrical components when the power is on.
- Verify correct voltage and current ratings before connecting the device.
- Ground the equipment properly to prevent electrical shock.
- Do not operate the VFD in environments with excessive dust, moisture, corrosive gases, or direct sunlight.
3. Product Overview
The perdnmkg SU300-4R0G2 is a compact and robust variable frequency drive (VFD) designed for industrial applications requiring precise motor speed control. It features a clear digital display and intuitive control buttons for easy programming and operation.
3.1. Front Panel and Dimensions
The front panel includes the digital display, control buttons, and a potentiometer for frequency adjustment. The unit's compact design allows for efficient use of space.

The following image provides detailed dimensions and key parameters for the SU300-4R0G2 model.

Another view showing the dimensions in centimeters for reference.

4. Setup
4.1. Mounting
The frequency converter supports guide rail installation for quick and secure mounting. Ensure adequate ventilation around the unit to prevent overheating.

4.2. Wiring
Proper wiring is critical for safe and correct operation. Refer to the wiring diagrams below for single-phase input power supply connections. Ensure all connections are tight and insulated.

Input Terminals:
- L1, L2: Single-phase 220V AC input.
- PE: Ground connection.
Output Terminals:
- U, V, W: Three-phase 220V AC output to the motor.
Control Terminals:
The diagram also shows control terminals (J1, J2, J3) for external control signals such as analog input (AI), analog output (AO), digital inputs (S1-S5), and RS485 communication. Consult the full product manual for detailed programming of these terminals.
5. Operating Instructions
5.1. Basic Operation
- Power On: After verifying all connections, apply single-phase 220V power to the L1 and L2 terminals. The digital display will illuminate.
- Start Motor: Press the RUN button to start the motor. The display will show the current output frequency.
- Adjust Frequency: Rotate the potentiometer knob on the front panel to adjust the output frequency, thereby controlling the motor speed.
- Stop Motor: Press the STOP/RESET button to stop the motor.
5.2. Control Panel Functions
- PRG: Program button, used to enter and exit parameter setting mode.
- SHIFT (>>): Shift button, used to move the cursor during parameter editing or view different parameters.
- M-FUN (Up/Down Arrows): Multi-function buttons, used to increase or decrease parameter values.
- ENTER: Confirm button, used to save parameter settings.
- RUN: Starts the motor.
- STOP/RESET: Stops the motor and clears fault indications.
For advanced programming and parameter settings, refer to the detailed programming guide provided with the full product documentation.
6. Maintenance
Regular maintenance ensures the longevity and reliable operation of your frequency converter.
- Cleaning: Periodically clean the exterior of the unit with a soft, dry cloth. Do not use liquid cleaners or solvents. Ensure ventilation openings are free from dust and debris.
- Inspection: Regularly check all wiring connections for tightness and signs of wear or damage. Inspect the cooling fan for proper operation and cleanliness.
- Environment: Maintain the operating environment within specified temperature and humidity ranges. Avoid exposure to direct sunlight, excessive vibration, or corrosive substances.
7. Troubleshooting
If you encounter issues with your frequency converter, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| No power to the unit | Input power disconnected; Blown fuse; Incorrect wiring | Check power supply; Replace fuse; Verify wiring connections (L1, L2, PE) |
| Motor does not run | Motor not connected; Incorrect output wiring; VFD in stop mode; Fault condition | Check motor connections (U, V, W); Verify output wiring; Press RUN; Check for fault codes on display and refer to full manual |
| Motor runs erratically | Incorrect frequency setting; Motor parameters not set correctly | Adjust frequency knob; Consult full manual for motor parameter settings (e.g., P00.03, P00.04) |
| Overcurrent/Overvoltage fault | Motor overload; Sudden load change; Input voltage fluctuation | Reduce motor load; Check input voltage stability; Consult full manual for fault code interpretation and reset procedures |
For specific fault codes and advanced troubleshooting, please refer to the comprehensive troubleshooting section in the complete product manual.
8. Specifications
Key technical specifications for the perdnmkg SU300-4R0G2 Frequency Converter:
| Parameter | Value |
|---|---|
| Model | SU300-4R0G2 |
| Input Voltage | Single-phase 220V |
| Output Voltage | Three-phase 220V |
| Rated Output Power | 4KW |
| Adapted Motor Power | 4KW (4Hp) |
| Rated Output Current | 17A |
| Output Frequency Range | 0.1 - 400 Hz |
| External Dimensions (L x W x H) | 180mm x 95.5mm x 120.14mm (approx. 18.0cm x 9.5cm x 12.0cm) |
| Gross Weight | 1.2 Kg |
| Cooling Method | Forced air cooling |
| Operating Temperature | 0°C to 40°C (32°F to 104°F) |
| Operating Humidity | Less than 90% RH (non-condensing) |
9. Warranty and Support
For warranty information, technical support, or service inquiries, please contact your retailer or the manufacturer directly. Keep your purchase receipt as proof of purchase.


