1. Product Overview
This manual provides detailed instructions for the installation, operation, and maintenance of your FOCAN Electric Bike DC Brushless Motor Controller and G51 LCD Display Panel. This system is designed for electric bicycles, electric scooters, electric vehicles, and toy scooters, offering precise control and clear display of essential riding information.
Figure 1: FOCAN G51 LCD Display and DC Brushless Motor Controller
2. Specifications
2.1. LCD Display (G51)
| Feature | Description |
|---|---|
| Item Type | Electric Display Screen |
| Product Material | ABS |
| Voltage Compatibility | DC 24V, 36V, 48V, 52V, 60V (Adjustable via P03 setting, default 36V) |
| Mounting | Suitable for 22.2mm diameter handlebars |
| Connectors | SM 5-pin Connector (LCD cable), SM 2-pin Connector (Light cable) |
| Special Features | Show speed |
Figure 2: Close-up view of the G51 LCD Display showing speed, power, and assist level.
2.2. DC Brushless Motor Controller
| Feature | Description |
|---|---|
| Condition | 100% Brand New |
| Material | Aluminum |
| Rated Voltage | 24-48V or 52/60V |
| Limited Current | 18±1A |
| Speed Set | 1.1-4.2V |
| Power | 350W |
| Suit for | 250W-350W DC Brushless Motor |
| Country/Region of Manufacture | CHINA |
Figure 3: Dimensions of the FOCAN DC Brushless Motor Controller (approx. 90mm length, 37mm height, 70mm width).
2.3. Package Contents
- 1 x LCD Display (G51)
- 1 x DC Brushless Motor Controller
3. Setup Instructions
Important Note: This controller and display are designed to work together. They are not universal models. Ensure all connections are secure before powering on.
3.1. Wiring Diagram
Figure 4: Wiring connections for the FOCAN DC Brushless Motor Controller. Refer to this diagram for all electrical connections.
Carefully connect the wires from your electric bike/scooter to the controller according to the diagram above. Key connections include:
- Red/Black: Power+ / Power-
- Green/Blue/Yellow: Motor A/B/C
- Green: Self-study (for motor pairing)
- Light/Horn: For lighting and horn accessories
- Brake Lamp: For brake light
- Brake: Brake signal input
- Throttle: Throttle input
- EABS Brake: Electronic ABS brake
- Hall: Hall sensor input from motor
- PAS: Pedal Assist System sensor input
- LCD Display: Connects to the G51 display (SM 5-pin connector)
- E-Door clock: Ignition/power switch
3.2. Installation Steps
- Mount the Controller: Secure the DC Brushless Motor Controller in a protected area on your electric bike/scooter, ensuring it is away from direct water exposure and physical damage.
- Mount the LCD Display: Attach the G51 LCD Display to your handlebars (22.2mm diameter) in a position that is easily visible and accessible while riding.
- Connect Wiring: Following the wiring diagram (Figure 4), connect all necessary components to the controller. Pay close attention to polarity and connector types.
- Connect the main power wires (Red/Black) to your battery.
- Connect the motor phase wires (Green/Blue/Yellow) and Hall sensor wires to your motor.
- Connect the throttle, brake levers, PAS sensor, and any lights/horn.
- Connect the G51 LCD Display using its SM 5-pin connector.
- Initial Power-Up: After all connections are made, turn on the E-Door clock (if applicable) or main power switch. The LCD display should power on.
4. Operating Instructions
4.1. Power On/Off
- To Power On: Ensure all connections are correct. Turn on the main power switch of your electric bike/scooter. The G51 display should illuminate.
- To Power Off: Turn off the main power switch of your electric bike/scooter. The G51 display will turn off.
4.2. Display Functions
The G51 LCD display shows various riding parameters:
- Speed: Current riding speed (Km/h).
- Power: Battery level indicator.
- Assist: Pedal assist level.
- ODO: Odometer (total distance traveled).
- TRIP: Trip distance.
- Error Codes: Displays error codes if a fault is detected (e.g., E07).
4.3. Parameter Settings (P-Settings)
The G51 display allows adjustment of various parameters. Use the '+' and '-' buttons to navigate and adjust values, and the 'M' button to confirm or switch modes.
Video 1: Demonstration of wiring and G51 LCD display parameter settings.
To enter parameter settings mode, typically press and hold the 'M' button or a combination of buttons (refer to the video for exact sequence). Common parameters include:
- P01: Backlight brightness (0-3, 0=darkest, 3=brightest).
- P02: Unit of measurement (0=km, 1=miles).
- P03: Voltage setting (24V, 36V, 48V, 52V, 60V). Default is 36V. Adjust this to match your battery voltage.
- P04: Wheel diameter setting.
- P05: Speed limit setting.
- P06: PAS level setting.
- P07: Motor pole pairs.
- P08: Current limit.
- P09: Soft start/hard start.
- P10: Power assist sensitivity.
- P11: Power assist start delay.
- P12: Power assist strength.
- P13: Controller undervoltage protection value.
- P14: Cruise control function.
- P15: Odometer reset.
- P16: Display sleep time.
- P17: Error code display.
Always ensure P03 is set correctly to match your battery voltage to prevent damage to the system.
5. Maintenance
- Cleaning: Wipe the display and controller with a soft, damp cloth. Do not use harsh chemicals or abrasive cleaners.
- Connections: Periodically check all electrical connections to ensure they are secure and free from corrosion.
- Water Exposure: While the components are designed for outdoor use, avoid prolonged exposure to heavy rain or submersion in water.
- Storage: When not in use for extended periods, store the electric bike/scooter in a dry, temperate environment.
6. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Display does not power on | Loose power connection, battery low, E-Door clock off. | Check all power connections. Ensure battery is charged. Turn on E-Door clock/main power switch. |
| Motor not responding | Loose motor connections, Hall sensor issue, throttle fault. | Check motor phase wires and Hall sensor connections. Test throttle. Perform self-study if available. |
| Display shows "E07" error | Motor Hall sensor fault. | Check the Hall sensor wiring from the motor to the controller. Ensure connections are secure and undamaged. If the issue persists, the Hall sensor or motor may need replacement. |
| Incorrect speed reading | Incorrect P04 (wheel diameter) setting. | Enter parameter settings and adjust P04 to the correct wheel diameter of your bike. |
| Voltage display incorrect | Incorrect P03 (voltage) setting. | Enter parameter settings and adjust P03 to match your battery's nominal voltage. |
Note: If you encounter persistent issues or error codes not listed here, please consult a qualified technician or contact FOCAN customer support.
7. User Tips
- Voltage Setting: Always double-check the P03 voltage setting on the LCD display to ensure it matches your battery's voltage (e.g., 24V, 36V, 48V, 52V, 60V). An incorrect setting can lead to inaccurate readings or system malfunction.
- Wiring Check: Before every ride, quickly inspect visible wiring for any signs of wear, damage, or loose connections to ensure safe operation.
- Handlebar Compatibility: The display is designed for 22.2mm handlebars. Ensure your handlebars are compatible for a secure fit.
8. Warranty and Support
FOCAN products are manufactured to high-quality standards. For warranty information, technical support, or service inquiries, please refer to the seller's specific warranty policy or contact their customer service directly. Keep your purchase receipt as proof of purchase.