1. Introduction
This manual provides essential information for the installation, operation, and maintenance of your MEROCA Intelligent Brushless DC Controller. Designed for electric scooters, this controller is compatible with 36V and 48V motor systems and supports up to 350W motors. Please read this manual thoroughly before installation and use to ensure safe and optimal performance.
Important Safety Notice: It is illegal to ride electric scooters on public roads, pavements, or cycle paths in many regions. They are intended only for use on private land with the owner's permission. Always check local regulations before use.
2. Specifications
| Feature | Specification |
|---|---|
| Model | M7 |
| Brand | MEROCA |
| Voltage Compatibility | DC 36V / 48V |
| Motor Wattage | Up to 350W |
| Current Limiting | 20A |
| Undervoltage Protection (36V) | 29 ± 1V |
| Undervoltage Protection (48V) | 39 ± 1V |
| Angle | 120° |
| Function | Sine wave |
| Material | Plastic + Metal |
| Color | Silver |
| Dimensions (L x W x H) | 9 cm x 5.5 cm x 3 cm (approx.) |
| Weight | Approx. 190g |
| Origin | Mainland China |
3. Package Contents
- 1 x MEROCA Intelligent Brushless DC Controller (M7)
4. Setup and Installation
Installation of an electric scooter controller requires basic electrical knowledge and caution. If you are unsure, it is recommended to seek professional assistance. Ensure the scooter's power is OFF and the battery is disconnected before starting installation.
4.1 Identifying Connectors
The controller features multiple color-coded wires and connectors. Refer to the images for visual identification. Common connections include:
- Battery Power (Thick Red/Black wires): Connects to the scooter's battery. Ensure correct polarity.
- Motor Phase Wires (Thick Yellow, Green, Blue wires): Connects to the corresponding phase wires of the brushless motor.
- Hall Sensor Wires (Thin Red, Black, Yellow, Green, Blue wires, often in a 5-pin connector): Connects to the motor's Hall sensors.
- Throttle (Typically Red, Black, Green/Blue wires): Connects to the throttle grip.
- Brake Levers (Often two wires per lever): Connects to the brake cut-off switches.
- Display/Instrument Panel: Connects to the scooter's display unit.
- Learning Wire (Self-learning wire, often two white wires): Used for initial motor pairing.
- Other Auxiliary Wires: May include wires for lights, horn, cruise control, etc.
4.2 Connection Procedure (General Guide)
- Disconnect Power: Ensure the scooter's battery is completely disconnected.
- Mount Controller: Securely mount the new controller in the designated location on your scooter, ensuring it is protected from moisture and physical damage.
- Connect Motor Phase Wires: Connect the three thick motor phase wires (Yellow, Green, Blue) from the controller to the corresponding wires on your motor.
- Connect Hall Sensor Wires: Connect the Hall sensor wire harness from the controller to the motor's Hall sensor connector.
- Connect Battery Power: Connect the thick red wire from the controller to the positive (+) terminal of your battery and the thick black wire to the negative (-) terminal. Double-check polarity to prevent damage.
- Connect Throttle: Connect the throttle connector.
- Connect Brake Levers: Connect the brake lever wires.
- Connect Display/Auxiliary Wires: Connect any other necessary wires for the display, lights, horn, etc.
- Self-Learning (if applicable): If your controller has self-learning wires (often two white wires), connect them together. Reconnect the battery. The motor should spin. If it spins in the wrong direction, disconnect the learning wires, then reconnect them. Once the motor spins correctly, disconnect the learning wires and insulate them.
- Test Functionality: Carefully test the scooter's functions (throttle, brakes, lights) in a safe, open area before full use.
5. Operating Instructions
Once properly installed, the controller manages the power delivery to your electric scooter's motor based on your throttle input and other sensor data.
- Power On: Turn on your electric scooter using its main power switch or key.
- Throttle Control: Gently twist the throttle to accelerate. The controller will regulate motor speed and power output.
- Braking: Apply the brake levers to slow down or stop. The controller will cut power to the motor when brakes are engaged.
- Display Information: If connected to a display, monitor speed, battery level, and other relevant information.
6. Maintenance
To ensure the longevity and reliable performance of your controller, follow these maintenance guidelines:
- Keep Dry: Protect the controller from water and excessive moisture. While the casing offers some protection, it is not fully waterproof.
- Cleanliness: Periodically clean the exterior of the controller to remove dust and debris. Use a dry cloth.
- Check Connections: Regularly inspect all wire connections to ensure they are secure and free from corrosion or damage.
- Avoid Overheating: Ensure the controller has adequate ventilation. Avoid covering it or operating it in extremely hot environments for extended periods.
- Physical Damage: Protect the controller from impacts and physical damage.
7. Troubleshooting
If you encounter issues with your electric scooter after installing the controller, consider the following common troubleshooting steps:
| Problem | Possible Cause | Solution |
|---|---|---|
| Scooter does not power on. | Loose battery connection, dead battery, faulty power switch. | Check battery connections and charge level. Inspect power switch wiring. |
| Motor does not spin or spins intermittently. | Loose motor phase wires, Hall sensor wires, or throttle connection. Incorrect self-learning. | Verify all motor and Hall sensor connections. Re-perform self-learning procedure. Check throttle wiring. |
| Motor spins in the wrong direction. | Incorrect self-learning. | Perform the self-learning procedure again, ensuring the motor spins in the desired direction before disconnecting the learning wires. |
| Brakes do not cut power to the motor. | Brake lever sensor wires disconnected or faulty. | Check brake lever wiring and ensure sensors are functioning. |
| Controller gets excessively hot. | Overload, poor ventilation, short circuit. | Ensure motor wattage does not exceed 350W. Improve ventilation. Check for short circuits in wiring. |
If problems persist after attempting these steps, consult a qualified technician or contact the seller for further assistance.
8. User Tips
- Wire Management: After installation, neatly bundle and secure all wires to prevent them from getting snagged or damaged during scooter operation.
- Insulation: Ensure all connections are properly insulated to prevent short circuits, especially in areas exposed to vibration or moisture.
- Voltage Match: Always ensure your battery voltage (36V or 48V) matches the controller's selected voltage and your motor's specifications.
- Initial Test: When testing after installation, lift the drive wheel off the ground to prevent unexpected movement.
9. Warranty and Support
For warranty claims, technical support, or any questions regarding your MEROCA Intelligent Brushless DC Controller, please contact your original point of purchase or the manufacturer directly. Keep your purchase receipt as proof of purchase.
Manufacturer: Changzhou Liya Intelligent Technology Co., LTD
