1. Introduction
This manual provides comprehensive instructions for the DKYS DK72180 Sine Wave Brushless DC Motor Controller. This controller is designed for electric scooters, offering quiet and efficient operation with a 72V 40A output. Please read this manual thoroughly before installation and operation to ensure proper function and safety.
2. Specifications
| Feature | Specification |
|---|---|
| Product Model | DK72180 |
| Voltage Range | 48-72V |
| Bus Current | 40A |
| Phase Current | 180A |
| Rated Power | 1800W |
| Dimensions (L x W x H) | 19.6 x 15.5 x 6.5 cm |
| Product Weight | 0.9 kg |
| Net Product Weight | 1 kg |
| Origin | Mainland China (Jiangsu) |
Note: Model Number DK72420S may refer to a variant or internal designation.

3. Package Contents
Upon opening the package, please verify that all items are present and undamaged:
- 1 x DKYS DK72180 Motor Controller
- 1 x Wiring Harness Set
- Mounting Screws

4. Installation
Before beginning installation, ensure the electric scooter's power is completely off and the battery is disconnected. Professional installation is recommended.
4.1 Physical Mounting
- Select a secure and well-ventilated location on your electric scooter for mounting the controller.
- Use the provided mounting screws to firmly attach the controller to the scooter frame. Ensure it is protected from direct water exposure and excessive vibration.

4.2 Wiring Connections
Carefully connect the wiring harness to the controller and the corresponding components of your electric scooter. Refer to the wiring diagram specific to your scooter model for precise connections. Key connections typically include:
- Battery Power: Connect the main positive (+) and negative (-) terminals from your battery to the controller's power input.
- Motor Phase Wires: Connect the U, V, and W phase wires from the motor to the corresponding terminals on the controller.
- Hall Sensor Wires: Connect the motor's Hall sensor wires to the controller's Hall sensor input.
- Throttle: Connect the throttle signal wire, power, and ground.
- Brake Levers: Connect brake signal wires.
- Other Signals: Connect any additional signals such as ignition, speed limit, cruise control, anti-theft, etc., as required by your scooter's features.

4.3 Initial Programming (Optional)
The controller may require programming to match your specific motor and desired performance characteristics. This requires a separate USB cable or Bluetooth module (not included with the controller) and the 'SP GUI Tool dk 2.0' software.
- Obtain the necessary USB cable or Bluetooth module.
- Install the 'SP GUI Tool dk 2.0' software on a compatible computer.
- Connect the controller to your computer using the USB cable or establish a Bluetooth connection.
- Launch the software and follow the on-screen instructions to configure settings such as motor parameters, throttle response, speed limits, and other functions.

5. Operation
Once the controller is correctly installed and programmed, you can operate your electric scooter. Ensure all connections are secure before powering on.
- Power On: Turn on the scooter's main power switch. The controller will initialize.
- Throttle Control: Gently apply the throttle to accelerate. The sine wave technology ensures a smooth and quiet start.
- Braking: Use the brake levers to slow down or stop. The controller supports Electronic Braking System (EBS) if configured.
- Mode Selection: If programmed, use your scooter's interface to switch between different ride modes (e.g., Eco, Sport).
6. Maintenance
To ensure the longevity and optimal performance of your DKYS DK72180 controller, follow these maintenance guidelines:
- Keep Clean: Regularly clean the exterior of the controller to prevent dust and debris buildup, especially on the heat sink fins.
- Check Connections: Periodically inspect all wiring connections for tightness and signs of wear or corrosion.
- Avoid Overheating: Ensure the controller has adequate ventilation. Avoid operating the scooter in conditions that may lead to excessive heat buildup.
- Software Updates: Check for any available firmware updates for the controller via the programming software.
7. Troubleshooting
If you encounter issues with your DKYS DK72180 controller, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Motor not responding | Loose wiring, incorrect programming, faulty motor/throttle | Check all connections, verify programming settings, test motor/throttle independently. |
| Intermittent power loss | Poor battery connection, controller overheating | Secure battery connections, ensure proper ventilation for the controller. |
| Unusual noises from motor | Incorrect motor phase/Hall sensor connections, motor damage | Recheck motor wiring, consult a professional for motor inspection. |
| Controller not detected by software | Incorrect USB/Bluetooth connection, driver issues | Ensure correct cable/module, install necessary drivers, try a different USB port. |
If the problem persists, contact customer support.
8. User Tips
- Always double-check wiring polarity before connecting the battery to avoid damage.
- When programming, save your current settings before making significant changes.
- For optimal performance, ensure your motor's specifications are compatible with the controller's voltage and current ratings.
9. Warranty and Support
For warranty information, technical support, or service inquiries, please contact the seller or manufacturer directly. Keep your purchase receipt as proof of purchase.





