1. Introduction
The UX-52 AC Motor Speed Regulator is a high-power drive module designed for single-phase AC motors ranging from 6W to 400W. It incorporates MCU digital control technology, offering a multifunctional design, accurate speed control, and stable performance. Key features include a soft-start function, digital display for easy setting modification, and a blocking-protection function to prevent motor and governor damage.

Product Overview Video
2. Specifications
| Attribute | Value |
|---|---|
| Model Number | UX-52 |
| Motor Type | AC Motor |
| Input Voltage | 220V AC |
| Power Frequency | 50/60Hz |
| Motor Output Power | 6W - 400W |
| Max Ampere | 3A |
| Control Technology | MCU Digital Control |
| Display | Digital Display |
| Dimensions (Height x Width x Depth) | 90mm (3.5in) x 60mm (2.4in) x 100mm (3.9in) |

3. Setup and Wiring
Proper wiring is crucial for safe and effective operation. Refer to the wiring diagram below and ensure all connections are secure and correct. The power supply voltage must match the governor's specified voltage (220V AC).

Wiring Instructions:
- Power Supply (N, L): Connect the main AC power supply (220V) to the N (Neutral) and L (Live) terminals. It is recommended to use a circuit breaker (QF) for protection against short circuits.
- Motor Connections (U1, U2, Z1, Z2): Connect the motor's main winding to U1 and U2, and the secondary winding to Z1 and Z2 as indicated in the diagram. Ensure the motor power is consistent with the governor's rated power (up to 400W).
- Velocity Feedback (S1, S2): Connect the velocity feedback wires from the motor to S1 and S2 terminals.
- External Control (K1, K2, 0V):
- REV (Reverse): Connect an external switch between K1 and 0V for reverse rotation control.
- FWD (Forward): Connect an external switch between K2 and 0V for forward rotation control.
- If using external switches, ensure F-03 parameter is set appropriately (2 or 3).
Circuit Breaker Current Specification:
| Supply Voltage | Motor Power | Recommended Circuit Breaker Current |
|---|---|---|
| 220V | 6-20W | 0.5A |
| 220V | 25-60W | 1A |
| 220V | 60-120W | 2A |
| 220V | 120-250W | 3A |
| 220V | 250-400W | 5A |
| 110V | 6-50W | 4A |
| 110V | 50-200W | 6A |
4. Operation
The UX-52 Speed Regulator features a user-friendly interface with a digital display, control buttons, and a speed regulating potentiometer.

Control Panel Functions:
- MODE: Used to enter parameter setting mode and navigate between parameters.
- Up/Down Arrows: Used to adjust parameter values or speed.
- ENTER: Confirms the selected parameter or value.
- REV (Reverse): Initiates reverse rotation of the motor.
- STOP: Stops the motor.
- FWD (Forward): Initiates forward rotation of the motor.
- Speed Regulating Potentiometer (Knob): Adjusts the motor speed. The panel knob automatically matches the highest speed, making it easy to adjust and control.
- Indicators: LEDs indicate forward rotation and reverse rotation status.
Parameter Settings (F-Codes):
To modify settings, press the MODE key and use the Up/Down arrows to select a parameter. Press ENTER to display the set value, and repeat the process for other parameters. Press MODE to exit the setting menu.

| Parameter Code | Parameter Functions | Setting Range | Practical Specification | Default |
|---|---|---|---|---|
| F-01 | Show contents | 1. Motor speed setting, 2. Setting value of magnification, 3. Setting value of deceleration | Magnification setting value * motor speed setting value + magnification | 1.0 |
| F-02 | Magnification setting | 1.0-999.9 | Set according to the needs of visual display and display the target value. | 1.0 |
| F-03 | Operation control mode | 1. Operation panel button control, 2. External switch control, 3. External switch control (stop is valid), 4. Operation panel button control with memory | To control the motor by the panel button, turn off the power supply of the controller, and then turn it on again. If the F-03 is set to 2, the motor can be started and stopped by the external switch. If it is set to 3, the motor can be started and stopped by the external switch, and the motor can be stopped by the panel button. If it is set to 4, the motor can be started and stopped by the panel button, and the motor can be stopped by the external switch. The working state is not saved during power-off. | 1 |
| F-04 | Operation mode | 1. Forward and reverse rotations are allowed, 2. Forward rotation is allowed and reverse rotation is prohibited | Limit the rotation direction of the motor to prevent equipment failure or accident. Setting to 2 means only forward rotation is allowed. | 1 |
| F-05 | Reverse rotation direction | 1. Reversion | Without changing the motor wiring, it is easy to change the motor direction to make it consistent with habits or requirements. | 1 |
| F-06 | Adjustment mode of maximum speed | 1. Panel button | Press the button to the right of maximum to maximum speed, and the speed panel button to the left of maximum to minimum speed. | 2 |
| F-07 | Maximum speed | 500-3000 | Limiting the maximum speed of the motor can prevent overspeed damage or accidents. | 1400 |
| F-08 | Minimum speed | 90-1000 | Limiting the minimum speed of the motor can prevent the motor from unstable speed, overloading and over-current due to low speed. | 120 |
| F-09 | Acceleration time of forward rotation | 0.1-10.0s | If the time is long, the motor starts smoothly and the starting time is long. | 0.3 |
| F-10 | Stop mode of forward rotation | 1. Free deceleration stop, 2. Slow deceleration stop | When free deceleration stop is selected, if the motor stops quickly, slow deceleration stop is selected. Change the F-11 setting value to change the speed of slow deceleration stop. | 1 |
| F-11 | Deceleration time of forward rotation | 0.1-10.0s | When F-10 selects 2, the time is valid. | 0.1 |
| F-12 | Acceleration time of reverse rotation | 0.1-10.0s | If the time is long, the motor starts smoothly and the starting time is long. | 0.3 |
| F-13 | Reverse time mode | 1. Free deceleration stop, 2. Slow deceleration stop | When free deceleration stop is selected, if the motor stops quickly, slow deceleration stop is selected. Change the F-14 setting value to change the speed of slow deceleration stop. | 1 |
| F-14 | Slow deceleration time of reverse rotation | 0.1-10.0s | When F-13 is selected, the time is valid. | 0.1 |
| F-15 | Alarm enable | 0. Invalid alarm, 1. Valid alarm | Control whether the locked rotor warning is effective. | 1 |
| F-16 | Cycle rotation enable | 0. Invalid, 1. Valid | Control whether the motor cycle function is effective. | 0 |
| F-17 | Number of turns | 1-9999s | Control motor rotation times. | 2 |
| F-18 | Forward rotation time | 0-9999s | Set the forward rotation time. When set to 0, it means that the cycle operation does not carry out forward rotation. | 5 |
| F-19 | Reverse rotation time | 0-9999s | Set the reverse rotation time. When set to 0, it means that the cycle operation does not reverse. | 5 |
| F-20 | Operation interval | 1-9999 | Set the forward and reverse switching or one-way intermediate interval time. | 5 |
| F-21 | Forward velocity | 90-3000 | Set the operating speed in the forward direction of the cycle. | 1000 |
| F-22 | Reverse velocity | 90-3000 | Set the operating speed in the reverse direction of the cycle. | 1000 |
| F-23 | Factory reset | 1. Do not restore factory settings, 2. Restore factory settings | 1 |
5. Maintenance
To ensure the longevity and optimal performance of your UX-52 AC Motor Speed Regulator, follow these general maintenance guidelines:
- Cleaning: Keep the unit clean and free from dust and debris. Use a soft, dry cloth for cleaning. Do not use liquid cleaners or solvents.
- Ventilation: Ensure adequate ventilation around the unit to prevent overheating. Do not block the ventilation slots.
- Connections: Periodically check all wiring connections to ensure they are tight and secure. Loose connections can lead to intermittent operation or damage.
- Environment: Operate the speed regulator in a dry, well-ventilated environment, away from direct sunlight, excessive heat, moisture, and corrosive substances.
6. Troubleshooting
If you encounter issues with your UX-52 AC Motor Speed Regulator, refer to the following common problems and solutions:
Alarm Exit:
- If an alarm is triggered, it often indicates an overload or locked motor condition.
Troubleshooting Methods:
- Check Connections: Verify all wiring connections are correct and secure, especially motor and power connections.
- Abnormal Counter-Force: If there is an abnormal counter-force between the governor and the motor, investigate the mechanical load or motor condition.
- Disarming Alarm: To disarm an alarm, disconnect and then reconnect the power supply to the unit.
- Motor Overload: Ensure the motor's power rating is within the 6W-400W range supported by the UX-52. An undersized or oversized motor can cause issues.
- Blocked Rotation: The blocking-protection function helps prevent damage from a blocked rotor. If the motor is blocked, remove the obstruction. Note that this function protects against blocked rotation overload, but not non-blocked rotation overload.
7. User Tips
- Motor Compatibility: This speed regulator is designed for single-phase AC motors. Ensure your motor is compatible before installation. It supports motors up to 400W.
- Voltage Matching: Always verify that your motor's operating voltage and the power supply voltage match the 220V AC requirement of the UX-52. Using a 110V AC motor with a 220V controller (or vice-versa) without proper conversion will lead to malfunction or damage.
- Application: While suitable for various single-phase AC motor applications, confirm the motor's power and type (e.g., not all washing machine motors are compatible or within the power range).
8. Warranty and Support
For any issues not covered in this manual or for technical support, please contact your retailer or the manufacturer. Keep your purchase receipt as proof of purchase for any warranty claims. Specific warranty terms and conditions may vary by region and retailer.





