VOTOL EM70 BLDC Sine Wave Controller User Manual

1. Introduction

The DUN VOTOL EM70 is a high-performance, programmable BLDC (Brushless DC) sine wave controller designed for electric in-wheel and mid-drive motors ranging from 1KW to 2.5KW. This controller offers smooth and efficient power delivery, enhancing the performance of your electric vehicle. This manual provides essential information for the proper installation, operation, and maintenance of your EM70 controller.

2. Installation and Setup

The EM70 controller is a universal version and may require modifications for specific vehicle setups. It is not a plug-and-play device for all applications. Careful attention to wiring and communication signals is crucial for correct functionality.

2.1 Default Functions

The controller supports the following default functions:

• Hall Plug
• Reverse
• Low Brake 0V
• Throttle (0-5V)
• High Brake 12V
• Ignition
• One-line/Hall Meter Wire
• Program Port
• Three Speed
• Sport Model
• Parking
• Anti-Theft
• Regen Charge
• Flux Weaken Current

2.2 Wiring Considerations

Before installation, thoroughly review the wiring diagram provided with your product. Ensure that the function lines on your original vehicle and the speedometer communication signals are compatible or properly adapted. Most functional interfaces will need to be modified to integrate with your specific electric motor system.

3. Operating Instructions

The EM70 controller is programmable via PC, allowing for fine-tuning of various parameters to optimize performance for your specific motor and application.

3.1 PC Programming

Connect the controller to a computer using the dedicated programming port and a USB cable. Utilize the provided software to adjust settings such as battery voltage, current limits, motor parameters, and other operational characteristics. Refer to the software interface for detailed options.

4. Maintenance

The EM70 controller features an IP67 degree of waterproofing, providing protection against dust and temporary immersion in water. However, proper care is still essential for longevity.

• Keep the controller clean and free from excessive dirt or debris.
• Avoid exposing the controller to extreme temperatures or harsh chemicals.
• Regularly inspect wiring connections for any signs of wear or damage.
• Ensure proper ventilation around the controller to prevent overheating, especially during high-power operation.

5. Troubleshooting

If you encounter issues with your EM70 controller, consider the following common problems and solutions:

• Auxiliary Functions Not Working: As a universal controller, some auxiliary functions of your original vehicle (e.g., speedometer display) may not work directly after installation. This often requires custom modification or adaptation. Verify all wiring and communication signals.
• Controller Not Responding: Check all power connections, throttle input, and ignition signals. Ensure the battery voltage is within the specified range (48V-72V).
• Motor Not Spinning Correctly: Verify Hall sensor connections and motor phase wire connections. Incorrect wiring can lead to erratic motor behavior. Use the PC programming software to diagnose motor parameters.
• Overheating: Ensure the controller is mounted in a location with adequate airflow. Reduce load or adjust programming parameters if persistent overheating occurs.

For complex issues, it is recommended to consult with a qualified technician or contact customer support.

6. Technical Specifications

7. Warranty and Support

7.1 Warranty Information

The EM70 controller comes with a 1-year warranty from the date of purchase. This warranty covers manufacturing defects in materials and workmanship. Please note the following conditions:

• The buyer is responsible for return shipping costs for warranty repairs or replacements.
• The warranty does not cover man-made damage, improper installation, misuse, or unauthorized modifications.
• It is strongly advised that individuals without sufficient knowledge of electric kit assembly seek professional assistance for installation to avoid damage that would void the warranty.

7.2 Technical Support

If you encounter any issues or have questions regarding the installation or operation of your EM70 controller, please contact the seller or manufacturer's support team for assistance. Provide your product model and a detailed description of the problem to facilitate a quicker resolution.

8. User Tips

• Understand Universal Nature: Remember that this controller is designed for broad compatibility. Be prepared for potential wiring adjustments to integrate it seamlessly with your specific electric vehicle's existing systems.
• Verify Wiring Thoroughly: Before powering on, double-check all connections against the provided wiring diagram. Pay close attention to Hall sensor wires, throttle, brake signals, and power connections to prevent damage.
• Utilize PC Programming: Take advantage of the PC programming feature to fine-tune the controller's performance to match your motor and riding preferences. This can significantly improve efficiency and responsiveness.
• Protect Against Damage: While waterproof, avoid unnecessary exposure to harsh conditions. Ensure secure mounting to prevent physical damage from vibrations or impacts.