VOTOL EM50-4 72300 Programmable Controller User Manual

1. Introduction

The VOTOL EM50-4 72300 is a sine wave brushless DC controller designed for electric scooters. This programmable controller features flux-weakening technology and is generally compatible with QS Motors. This manual provides essential information for the proper installation, operation, and maintenance of your EM50-4 controller.

2. Product Overview

2.1 Key Features

• Constructed with imported materials for reliability.
• Advanced aluminum substrate scheme for efficient heat dissipation, with the Moss tube laid on the aluminum substrate and then placed on the PCB board.
• Compact design for easy integration.
• High efficiency, resulting in low temperature rise and reduced running current.
• Equipped with flux weakening function for enhanced performance.

2.2 Default Functions

The VOTOL EM50-4 controller comes with the following default functions:

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

3. Specifications

4. Package Contents

The standard package includes the following items:

• 1 x VOTOL EM50-4 Sine Wave Motor Controller
• 1 x USB Cable (Data cable for adjusting controller parameters)

5. Setup & Installation

Proper setup and installation are crucial for the optimal performance and longevity of your controller. Please read the following instructions carefully.

5.1 Motor Parameter Matching

It is essential to provide the matched motor parameters when ordering or setting up the controller. This allows for optimal configuration before delivery or during initial setup.

• For Hub Motors: Please provide the motor speed, polar number, motor size, and model.
• For Mid-Drive Motors: Please provide the motor power.

Note: This controller is designed to match well with QS Motors. It may not work properly with motors from other brands without significant parameter adjustments.

5.2 General Installation Considerations

The VOTOL EM50-4 controller is a universal version. After installation, some auxiliary functions of the original vehicle (such as speedometer display) may require modification to work correctly. Most functional interfaces are not plug-and-play and will need careful wiring and configuration.

Before making any modifications, carefully check the function lines on your original vehicle and the communication signals for components like the speedometer.

6. Wiring Diagram

Refer to the following diagrams for detailed wiring instructions. Ensure all connections are secure and correctly matched to avoid damage to the controller or motor.

Key Wiring Connections:

• Power: Connect the main battery positive and negative terminals to the corresponding controller inputs.
• Motor Phases: Connect the three motor phase wires (U, V, W) to the controller's phase outputs.
• Hall Signal Line: Connect the Hall sensor wires from the motor to the controller's Hall input.
• Throttle Handle: Connect the pink, green, and black wires for the throttle handle.
• Brakes: Connect the low brake (or offset line) and purple high brake wire.
• Electric Door Lock Cable: Connect the gray/purple electric door lock cable.
• One Line Meter: Connect for meter display.
• Curise: Connect the cruise function wire.
• Three Speed: Connect the three-speed control wires.
• Anti-theft: Connect the anti-theft positive/negative wires and the anti-theft cable.
• Learning Wires: Two learning wires are inserted to learn the motor phase angle.
• Computer Debugging/Bluetooth Debugging Jack: For programming and diagnostics.

7. Programming & Operation

The EM50-4 controller is programmable via a PC using the provided USB cable. This allows for fine-tuning of various parameters to optimize performance for your specific motor and riding preferences.

7.1 Connecting for Programming

1. Ensure the controller is powered off before connecting the USB cable.
2. Connect one end of the USB data cable to the controller's program port (Computer debugging or Bluetooth debugging jack).
3. Connect the other end of the USB cable to your computer.
4. Power on the controller.
5. Launch the VOTOL programming software on your PC.

7.2 Software Interface Overview

The programming software allows adjustment of various settings. Below are examples of the interface screens:

Consult the software's help documentation for detailed explanations of each parameter and its effect on controller behavior.

8. Maintenance

The VOTOL EM50-4 controller is designed for durability with an IP65 waterproof rating. Regular maintenance is minimal but important for long-term performance:

• Keep the controller clean and free from excessive dust or debris.
• Periodically check all wiring connections for tightness and signs of wear or corrosion.
• Ensure the controller's heat sink fins (Figure 2) are not obstructed to allow for proper cooling.
• Avoid exposing the controller to extreme temperatures or harsh chemicals.

9. Troubleshooting

If you encounter issues with your EM50-4 controller, consider the following common troubleshooting points:

9.1 Common Issues

• Auxiliary functions not working (e.g., speedometer): As the controller is a universal version, some original vehicle auxiliary functions may require modification or specific wiring to function correctly. Verify the wiring and communication signals.
• Motor not responding or erratic behavior:
  • Check all power and motor phase connections.
  • Verify Hall sensor connections.
  • Ensure motor parameters in the controller's programming match your motor's specifications.
  • Inspect the throttle connection.
• Controller overheating: Ensure adequate airflow around the controller and that the heat sink fins are clean and unobstructed. Check for excessive current draw.

9.2 General Advice

If you experience persistent problems, please feel free to contact the seller for assistance. Providing detailed information about the issue and your motor's specifications will help in diagnosing the problem.

10. User Tips

Based on common user experiences and questions, here are some helpful tips:

• Technical Knowledge: If you lack knowledge in electric kit assembly and wiring, it is advisable to seek professional assistance for installation to prevent potential damage.
• Motor Compatibility: For best results, it is highly recommended to pair the VOTOL controller with QS Motors. Compatibility with other motor brands may require extensive parameter testing and adjustment.
• Customization: Be aware that most functional interfaces are not plug-and-play and will likely require custom wiring and configuration to integrate fully with your vehicle's existing systems.

11. Warranty & Support

11.1 Warranty Information

A 1-year warranty is offered for motors and controllers. Please note that the buyer is responsible for the return shipping cost for any repairs or replacements under warranty. The warranty does not cover man-made damage.

11.2 Technical Support

For technical assistance or any questions regarding the EM50-4 controller, please contact the seller or manufacturer's support channels. Provide your product model and a clear description of your issue for efficient support.