1. Introduction
This manual provides essential information for the safe and efficient installation, operation, and maintenance of your 36V 48V 1000W 30A Brushless Motor Controller. Designed for electric bicycles and scooters, this controller offers three speed modes and is built with high-quality, durable materials. Please read this manual thoroughly before attempting any installation or operation.

2. Safety Information
Improper installation or use of this product can lead to serious injury or damage. Always observe the following safety precautions:
- Professional Installation Recommended: Due to the electrical nature of this component, professional installation by a qualified technician is highly recommended.
- Power Disconnection: Always disconnect power from the battery before performing any installation, wiring, or maintenance.
- Voltage Compatibility: Ensure the controller's voltage (36V/48V) matches your motor and battery system.
- Wiring Accuracy: Double-check all wiring connections according to the provided diagram. Incorrect wiring can cause damage to the controller, motor, or battery.
- Environmental Conditions: Keep the controller dry and away from extreme temperatures. The aluminum housing provides protection, but it is not fully waterproof.
- Component Integrity: Do not use the controller if it appears damaged or if any wires are frayed.
3. Product Overview
3.1 Components
The package typically includes:
- 1 x Brushless Motor Controller (30A)
- Integrated wiring harness
3.2 Specifications
| Feature | Specification |
|---|---|
| Model | 30A |
| Voltage | DC36V / 48V (Matching) |
| Power | 1000W (Matching) |
| Rated Current | 15A |
| Maximum Current | 30A (30 times 1A) |
| Speed Setting | 1-4.2V |
| Low Voltage Protection | DC30V / 40V (times 0.5V) |
| Dimensions (L x W x H) | 146mm x 62mm x 38mm (5.7in x 2.4in x 1.5in) |
| Weight | 403g |
| Material | Aluminum |
| Protocol Compatibility | UART No.2 protocol controller only |


4. Installation and Setup
Before beginning installation, ensure all power is disconnected from your E-bike or scooter. This controller is designed for systems compatible with UART No.2 protocol. If you are unsure about compatibility or installation steps, please consult a professional.
4.1 Wiring Diagram
Carefully follow the wiring diagram below to connect the controller to your E-bike/scooter components. Each wire is color-coded and labeled for specific functions.
Key Connections:
- Throttle: Connect to your throttle unit for speed control.
- Speed Limit Line: Used to activate or deactivate speed limiting features.
- Hall Phase Slot Line: Connect to the motor's Hall sensor wires.
- Booster: For pedal-assist systems (PAS).
- Brake: Connect to your brake levers, typically for motor cut-off during braking.
- Instrument: Connect to your display or instrument panel.
- Power Supply: Main power input from the battery.
- Self-Study Line: Used for initial motor pairing/learning.
- Light Line: For connecting lights or other accessories.
4.2 Installation Steps
- Mount the controller securely in a protected area on your E-bike/scooter, ensuring it is away from direct water exposure and excessive vibration.
- Connect the main power supply wires from your battery to the controller's power input.
- Connect the motor phase wires and Hall sensor wires to the corresponding connectors on the controller.
- Connect the throttle, brake levers, instrument panel, and any other accessories (e.g., lights, booster) as per the wiring diagram.
- Once all connections are made, perform the self-study procedure if required by your motor/display system (refer to your motor/display manual for specific instructions).
- Carefully re-check all connections before restoring power.
5. Operation
After successful installation, you can begin operating your E-bike/scooter.
- Power On/Off: Use the power button on your E-bike/scooter's display or battery to turn the system on or off.
- Speed Control: The throttle provides variable speed control within the 1-4.2V range.
- Speed Modes: This controller supports three speed modes. The method to switch between these modes typically depends on your display unit. Consult your display's manual for instructions on changing speed modes.
- Adjustable Wire: The controller features an adjustable wire, which may be used for fine-tuning certain parameters. Specific adjustment procedures would depend on the connected display or external tools.
6. Troubleshooting
If you encounter issues, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Motor does not respond / No power | Loose power connection, low battery, incorrect wiring, faulty display/throttle. | Check all power connections. Ensure battery is charged. Verify all wiring against the diagram. Test display/throttle if possible. |
| Motor runs intermittently or roughly | Loose motor phase wires or Hall sensor wires, motor/controller incompatibility. | Inspect motor and Hall sensor connections. Ensure controller is compatible with your motor type (e.g., Hall sensor vs. sensorless). |
| Speed limit not working | Speed limit wire not connected or configured correctly. | Check the speed limit wire connection. Refer to your display manual for configuration. |
| Controller gets excessively hot | Overload, poor ventilation, short circuit. | Reduce load. Ensure controller has adequate airflow. Check for any short circuits in the wiring. |
| Low Voltage Protection activates too soon | Battery voltage drop under load, incorrect low voltage setting. | Check battery health. Ensure the controller's low voltage protection setting (DC30/40V) is appropriate for your battery. |
Note: Light reflection and different displays may cause the color of the item in pictures to appear slightly different from the real product. The measurement allowed error is +/- 1-3cm for physical dimensions.
7. Maintenance
To ensure the longevity and optimal performance of your brushless motor controller, follow these maintenance guidelines:
- Keep Clean: Regularly wipe down the controller's exterior with a dry cloth to remove dust and debris.
- Keep Dry: Avoid exposing the controller to water or excessive moisture. While the aluminum housing offers some protection, it is not fully waterproof.
- Inspect Connections: Periodically check all wire connections for tightness and signs of wear or corrosion. Re-secure any loose connections.
- Ventilation: Ensure the controller's mounting location allows for adequate airflow to prevent overheating.
- Avoid Physical Damage: Protect the controller from impacts and physical damage.
8. User Tips
- Always ensure your battery is fully charged before long rides to prevent unexpected power loss.
- If your E-bike/scooter has a self-learning function, utilize it after initial installation or if you replace the motor to optimize performance.
- For best results and safety, consider having the initial installation and any complex troubleshooting performed by a professional.
9. Warranty and Support
For any warranty claims, technical support, or questions not covered in this manual, please contact the seller or manufacturer directly. Keep your purchase receipt as proof of purchase.





