1. Product Overview
This manual provides instructions for the BAFANG 36V 250W UART Version Mid Drive Controller, designed for e-bike mid-drive conversion kits. This is the new version featuring integrated ports for a gear sensor and front light.
Key Features
- Rated voltage: 36V, rated power: 250W.
- Replacement controller for BBS01B Mid Drive Motor.
- New version with built-in gear sensor and front light ports.
- Manufactured by BAFANG OEM for reliability and compatibility.
- Designed for easy installation.
Controller Versions Comparison
It is important to confirm your controller version before installation. The new version includes built-in gear sensor and front lamp plugs, unlike the old version.
Image: Comparison showing the internal wiring and external connections of the new BAFANG controller (left) with integrated gear sensor and front lamp plugs, versus the old version (right) which lacks these integrated features.
2. Specifications
The BAFANG 36V 250W Controller has the following specifications:
Image: A graphic displaying the core specifications of the controller: Rated Voltage 36V, Rated Power 250W, and Controller Current 15A.
Controller Reference Table
Refer to the table below to identify the correct controller model based on its voltage and wattage.
Image: A reference table listing different BAFANG controller models (36V 250W, 350W, 500W; 48V 750W, 1000W; 52V 1000W) with their corresponding model numbers, voltage, wattage, and indicating if they include a gear sensor and front lamp connector.
| Specification | Value |
|---|---|
| Rated Voltage | 36V |
| Rated Power | 250W |
| Model Number | 36V 250W Controller |
| Brand | BAFANG |
| Item Weight | 0.5 Kilograms |
| Special Feature | Waterproof |
3. Installation and Connections
Identifying Controller Components
The controller features various connectors for different e-bike components. Familiarize yourself with these connections before installation.
Image: A detailed view of the BAFANG controller, highlighting the built-in gear sensor plug and front lamp plug, along with close-ups of the cable routing and connector design.
Image: A visual guide to the connectors on BAFANG BBS 250W/350W/500W/750W controllers, labeling connections for EB-Bus, Gear Sensor, Speed Sensor, Battery, Front Lamp, Holzer Sensor, Speed Transmission, and Motor Phase.
Installation Steps
- Pre-installation Check: Before permanent installation, connect the controller provisionally and test all functions to ensure correct operation.
- Mounting: Securely mount the controller to your e-bike's mid-drive motor housing. Ensure proper alignment and fit.
- Cable Connections: Connect the various cables to their respective components:
- Speed Sensor Connection: Connect the speed sensor cable.
- EB-Bus Connection: Connect the EB-Bus cable for communication.
- Gear Sensor Connection: Connect the gear sensor cable.
- Battery Connection: Connect the battery cables (red for positive, black for negative).
- Front Lamp Connection: Connect the front lamp cable if applicable.
- Holzer Sensor: Connect the Holzer sensor.
- Speed Transmission: Connect the speed transmission cable.
- Motor Phase: Connect the motor phase cables.
- Cable Management: Route and secure all cables to prevent interference or damage during operation.
- Final Test: After all connections are made, perform a comprehensive test of the e-bike system to confirm full functionality.
Video: An official BAFANG video demonstrating the installation and connection process for the BAFANG Mid Drive Controller. This video shows the various cables and their connection points on the motor and controller.
4. Operation
Once installed, the BAFANG controller manages the power delivery from your battery to the mid-drive motor, enabling electric assist for your e-bike.
Basic Operation
- Ensure the battery is fully charged and securely connected.
- Turn on your e-bike's display or power switch.
- Select your desired assist level using the e-bike's control panel.
- Begin pedaling; the motor will engage to provide assistance based on your selected level and pedaling input.
Gear Sensor Functionality
The integrated gear sensor temporarily cuts motor power during gear shifts, allowing for smoother transitions and reducing wear on your drivetrain components.
Front Lamp Functionality
The front lamp port allows for direct connection and power supply to a compatible e-bike front light, controlled via your e-bike's display.
5. Maintenance
- Regular Inspection: Periodically check all cable connections for tightness and signs of wear or damage.
- Cleaning: Keep the controller and its connections clean and free from dirt, dust, and moisture. Use a soft, dry cloth for cleaning.
- Waterproof Feature: While the controller is waterproof, avoid submerging it in water or exposing it to high-pressure water jets.
- Storage: When not in use for extended periods, store the e-bike and controller in a dry, temperate environment.
6. Troubleshooting
Common Issues and Solutions
| Problem | Possible Cause | Solution |
|---|---|---|
| Motor not engaging | Loose battery connection | Check and secure battery connections. |
| Motor not engaging | Incorrect assist level selected | Adjust assist level on the display. |
| Motor not engaging | Faulty speed sensor | Inspect speed sensor and cable for damage. |
| Rough gear shifting | Gear sensor not functioning | Check gear sensor connection and functionality. |
| Front lamp not working | Loose lamp connection or incompatible lamp | Verify lamp connection and ensure compatibility. |
If issues persist after attempting these solutions, please contact BAFANG customer support for further assistance.
7. Warranty and Support
BAFANG products are manufactured to high standards. For warranty information and technical support, please refer to the official BAFANG website or contact your retailer.
If you have any questions or require technical assistance, please contact the seller, E-mangue, directly. They can provide support and help resolve any problems you encounter.
Seller: E-mangue