Introduction
This manual provides detailed instructions for the installation, operation, and maintenance of your FUZHUI 36V/48V 250W Electric Motor Brushless Controller Kit with KT LCD4 Display Panel. This kit is designed for DIY electric bicycle conversions, offering stable performance and sensitive control. Please read this manual thoroughly before installation and use to ensure proper function and safety.
Safety Information
- Always wear appropriate safety gear, including a helmet, when operating an electric bicycle.
- Ensure all connections are secure and properly insulated to prevent short circuits.
- Do not attempt to modify the controller or display panel, as this may void the warranty and create safety hazards.
- Keep the kit components away from water and extreme temperatures.
- Disconnect the battery before performing any maintenance or installation procedures.
Package Contents
Verify that all items listed below are included in your package:
- 1 x KT 7A Controller
- 1 x KT-LCD4 Display Panel
- 1 x Display Manual (separate, if provided)
- 1 x Thumb Throttle
- 1 x Speed Assist Magnetic Point (PAS Sensor)
- 1 x Wiring Diagram
Product Overview
The FUZHUI Electric Motor Brushless Controller Kit consists of several key components that work together to power and control your electric bicycle.
A. KT 7A Controller
The controller is the brain of your e-bike system, managing power delivery to the motor based on your input from the throttle and PAS sensor. It is housed in a sturdy aluminum alloy casing for durability and heat dissipation.
B. KT-LCD4 Display Panel
The LCD4 display provides real-time information about your ride, including speed, battery level, assist level, and trip distance. It is designed for easy mounting on your handlebars.
C. Thumb Throttle
The thumb throttle allows for manual acceleration, providing power to the motor independently of pedal assist. It mounts on the handlebar for convenient access.
D. Speed Assist Magnetic Point (PAS Sensor)
The PAS sensor detects your pedaling motion and signals the controller to provide motor assistance, making your ride easier and more efficient.
Setup and Installation
Follow these steps carefully to install your electric motor brushless controller kit. Refer to the included wiring diagram for specific connection details.
- Mount the Controller: Securely mount the KT 7A controller to your bicycle frame in a protected location, away from direct impact or water spray. Ensure good airflow for heat dissipation.
- Install the Display Panel: Attach the KT-LCD4 display panel to your handlebar using the provided clamp. Position it for easy viewing and access to buttons.
- Install the Thumb Throttle: Mount the thumb throttle on your handlebar, typically on the left or right side depending on preference, ensuring it does not interfere with braking or shifting.
- Install the Speed Assist Magnetic Point (PAS Sensor): Install the PAS sensor on your bicycle's bottom bracket, ensuring the magnetic disc is properly aligned with the sensor unit. This typically involves removing the crank arm.
- Connect the Motor: Connect the motor phase wires (usually three thicker wires) from your motor to the corresponding wires on the controller. Ensure correct color matching.
- Connect the Battery: Connect the battery power wires to the controller's battery input. Pay close attention to polarity (positive to positive, negative to negative).
- Connect Accessories: Connect the KT-LCD4 display, thumb throttle, and PAS sensor to their respective ports on the controller. These connections are typically color-coded or uniquely shaped to prevent incorrect connection.
- Secure Wiring: Route and secure all cables neatly using zip ties or cable wraps to prevent them from snagging or getting damaged during riding.
- Initial Power-Up: After all connections are made and secured, connect your battery and power on the system via the display panel. Check for any error codes or unusual behavior.
Note: Always refer to the specific wiring diagram included with your kit for precise connection instructions, as wire colors and connector types may vary slightly.
Operating Instructions
Once installed, operating your electric bicycle kit is straightforward. The KT-LCD4 display is your primary interface.
A. Powering On/Off
- To power on the system, press and hold the power button on the KT-LCD4 display for a few seconds.
- To power off, press and hold the power button again until the display turns off.
B. Display Functions
The KT-LCD4 display shows various parameters:
- Speed: Current riding speed.
- Battery Level: Indication of remaining battery charge.
- Assist Level: Shows the current level of pedal assistance (usually 0-5 or 0-9).
- Trip Distance: Distance covered during the current ride.
- Odometer: Total distance covered by the bicycle.
- Error Codes: Displays codes if a system fault occurs.
C. Adjusting Assist Level
Use the UP and DOWN buttons on the display to cycle through the pedal assist levels. Level 0 provides no assistance, while higher levels provide more motor power.
D. Using the Thumb Throttle
Gently press the thumb throttle to engage the motor. The amount of pressure applied controls the motor's power output. Release the throttle to disengage. The throttle can be used independently of pedal assist or in conjunction with it.
Maintenance
Regular maintenance ensures the longevity and optimal performance of your electric bicycle kit.
- Clean Components: Periodically wipe down the controller, display, and other components with a soft, damp cloth. Avoid using harsh chemicals or excessive water.
- Check Connections: Regularly inspect all electrical connections for tightness and signs of wear or corrosion. Ensure cables are not pinched or frayed.
- Battery Care: Follow the manufacturer's instructions for your e-bike battery regarding charging, storage, and temperature.
- General Bicycle Maintenance: Continue with regular bicycle maintenance, including tire pressure, brake checks, and chain lubrication.
Troubleshooting
If you encounter issues, refer to the following common troubleshooting steps. For complex problems, consult a qualified technician.
| Problem | Possible Cause | Solution |
|---|---|---|
| System does not power on. | Battery not connected, low battery, loose power connection, faulty display. | Check battery connection and charge level. Ensure power cables are securely connected. Inspect display cable. |
| Motor not assisting. | PAS sensor not installed correctly, PAS sensor cable loose, assist level set to 0, motor cable loose. | Verify PAS sensor alignment and connection. Increase assist level on display. Check motor phase wire connections. |
| Throttle not working. | Throttle cable loose, faulty throttle unit. | Check throttle cable connection to the controller. Test throttle if possible. |
| Display shows error code. | Specific system fault (e.g., motor hall sensor error, controller error). | Refer to the KT-LCD4 display manual for specific error code meanings and solutions. Often requires checking specific component connections. |
Specifications
| Feature | Detail |
|---|---|
| Item Type | Electric Motor Controller Kit |
| Material | Aluminum Alloy + Plastic |
| Controller Box Size | Approx. 8.5x5.2x3.1cm / 3.3x2.0x1.2in |
| Rated Current | 7A |
| Rated Voltage | DC36V / 48V |
| Speed Setting | 1-4.2V |
| Low Voltage Protection | DC30 / 40±0.5V |
| Maximum Current | 15±1A |
| Compatible Motor Power | 250W |
| Display Panel | KT-LCD4 (compatible with KT series controllers only) |
Warranty and Support
For warranty information or technical support, please refer to the documentation provided with your purchase or contact FUZHUI customer service. Keep your purchase receipt for warranty claims.
For further assistance, you may visit the FUZHUI Store on Amazon.