1. Introduction
Thank you for choosing the ZUIDID E-Bicycle/Scooter Brushless Motor Controller. This controller is designed to provide efficient and reliable power management for your electric bicycle or scooter. It features a 3-mode sine wave operation, compatibility with various voltage and power ratings, and robust heat dissipation. Please read this manual carefully before installation and operation to ensure proper function and safety.

2. Specifications
| Feature | Description |
|---|---|
| Type | Controller |
| Brand Name | ZUIDID |
| Origin | Mainland China |
| Rated Voltage | 24V / 36V / 48V (Universal) |
| Maximum Current | 26 ± 1A |
| Suitable Motor Power | 500W, 700W, 750W |
| Motor Compatibility | Brushless motor (with or without Hall sensor) |
| Wave Type | Sine Wave / Square Wave (3-mode) |
| Brakes | Low Level |
| Speed Range | 1.1-4.2V |
| Material | Aluminum alloy (Controller enclosure) |


3. Setup and Wiring Instructions
Proper wiring is essential for the safe and correct operation of your controller. Refer to the wiring diagram and the demonstration video for guidance. Ensure all connections are secure before applying power.

3.1. Wiring Connections
- Battery Connection (2-pin): Connect the main power cable from your battery to the controller's 2-pin battery connector. Ensure correct polarity (red for positive, black for negative).
- Phase Lines (3-pin): Connect the three phase wires from your motor to the controller's 3-pin phase line connectors. These are typically thicker wires (e.g., green, yellow, blue).
- Hall Sensor Line (6-pin): If your motor has Hall sensors, connect the 6-pin Hall sensor cable from your motor to the corresponding connector on the controller.
- Throttle (3-pin): Connect the throttle cable to the controller's 3-pin throttle connector.
- PAS (Pedal Assist System) (3-pin): Connect the PAS sensor cable to the controller's 3-pin PAS connector, if applicable.
- Display (5-pin): Connect your compatible display unit to the controller's 5-pin display connector. Note: The display must match the No.2 communication protocol for proper function.
- Light (2-pin): Connect your e-bike/scooter lights to the controller's 2-pin light connector, if applicable.
- Self-Study (1-pin): This is a single-pin connector used for the self-learning function (see Operating Instructions).
- E-Brake (2-pin): Connect your e-brake levers to the controller's 2-pin E-brake connector.
3.2. Wiring Demonstration Video
Watch this video for a visual guide on connecting the controller's wires:
4. Operating Instructions
4.1. Initial Power-Up
- After all connections are made according to the wiring instructions, turn on the power supply to your e-bike/scooter.
- The display unit (if connected and compatible) should power on and show relevant information such as voltage and speed.
4.2. Self-Learning Function
The controller features a self-learning function to optimize motor performance. To activate:
- Ensure the motor is freely suspended and not under load.
- Connect the two wires of the 'Self-study' connector (1-pin) together.
- The motor should start spinning. If it spins in the wrong direction, disconnect the self-study wires, wait a few seconds, and reconnect them. The motor should then spin in the correct direction.
- Once the motor spins correctly, disconnect the self-study wires. The controller has now learned the motor's parameters.
4.3. Normal Operation
Once the self-learning process is complete, you can operate your e-bike/scooter using the throttle and display. The display will show real-time speed, battery level, and other operational data.
5. Maintenance
The ZUIDID controller is designed for durability and requires minimal maintenance. Follow these guidelines to ensure its longevity:
- Keep Clean: Regularly clean the exterior of the controller to prevent dust and dirt buildup, which can hinder heat dissipation.
- Check Connections: Periodically inspect all wiring connections to ensure they are tight and free from corrosion. Loose connections can lead to intermittent operation or damage.
- Avoid Overheating: The aluminum alloy casing is designed for good heat dissipation. Ensure the controller is mounted in a location with adequate airflow and not covered, to prevent thermal overload. The controller has a built-in safety feature to cut off current if temperatures become too high.
- Protect from Moisture: While the controller is robust, avoid exposing it to excessive moisture or direct water spray to prevent internal damage.

6. Troubleshooting
If you encounter issues with your controller, try the following basic troubleshooting steps:
- No Power to Display/Motor:
- Check battery connections and ensure the battery is charged.
- Verify all main power cables are securely connected.
- Ensure the display unit is correctly connected and compatible (No.2 communication protocol).
- Motor Not Spinning or Spinning Incorrectly:
- Re-check phase line and Hall sensor connections.
- Perform the self-learning function again (refer to Section 4.2).
- Ensure the throttle is properly connected and functioning.
- Intermittent Operation:
- Inspect all wiring for loose connections or damaged insulation.
- Check for signs of overheating on the controller. Allow it to cool down if hot.
- Error Codes on Display:
- Refer to your display unit's manual for specific error code meanings and troubleshooting steps.
If problems persist after attempting these steps, consult a qualified technician or contact customer support.
7. Warranty and Support
For any product-related inquiries, technical assistance, or warranty claims, please contact the seller or manufacturer directly. Keep your purchase receipt as proof of purchase.





