NULKOMMA JH4AZ7050DZQR Brushless Motor Controller User Manual

1. Product Overview

The NULKOMMA JH4AZ7050DZQR Brushless Motor Controller is designed to provide stable and sensitive control for 48V electric bicycle motors. It ensures steady speed, responsive braking, and precise direction changes, enhancing your riding experience. This controller is equipped with high-temperature protection features to safeguard the entire system by cutting off current if temperatures become excessive. Its aluminum alloy shell, featuring grooves, promotes efficient heat dissipation, preventing thermal overload and protecting internal wiring.

This controller is a customized model. Please ensure compatibility with your specific e-bike before installation.

Figure 1: NULKOMMA JH4AZ7050DZQR Brushless Motor Controller. This image displays the overall view of the controller unit, highlighting its compact design and robust casing.

2. Safety Information

• Always disconnect power before installing or performing maintenance on the controller.
• Ensure all connections are secure and properly insulated to prevent short circuits.
• Do not expose the controller to water or extreme moisture.
• Avoid modifying the controller or its wiring, as this may void the warranty and create safety hazards.
• Consult a qualified technician if you are unsure about any installation steps.

3. Package Contents

Verify that all components are present in the package:

• 1 x JH4AZ7050DZQR Brushless Motor Controller

4. Installation and Setup

The controller features durable wires and interfaces with distinct colors for easy identification and installation. Follow these general steps for connecting the controller to your e-bike system.

Figure 2: NULKOMMA JH4AZ7050DZQR Controller showing various connection ports. This image provides a detailed view of the controller's side, illustrating the different colored cables and connectors for system integration.

4.1 Wiring Instructions

1. Power Connection: Connect the main power cables (typically thicker red for positive and black for negative) from your 48V battery to the corresponding ports on the controller. Ensure polarity is correct.
2. Motor Connection: Connect the three phase wires (usually green, blue, yellow) from the motor to the controller's motor phase ports. Connect the Hall sensor wires (smaller wires, typically 5 or 6, with matching colors) from the motor to the controller's Hall sensor port.
3. Throttle Connection: Connect the throttle cable (typically red, green, black) to the controller's throttle input port.
4. Brake Lever Connection: Connect the brake lever cables to the controller's brake input ports. These typically cut power to the motor when activated.
5. Display/Panel Connection (if applicable): If your e-bike has a display or control panel, connect its cable to the designated port on the controller.
6. Other Connections: Connect any other accessories such as pedal assist sensor (PAS), headlight, or taillight according to their respective color codes and controller ports.

After making all connections, double-check for security and correct polarity before applying power. Improper wiring can damage the controller or other components.

5. Operation

Once properly installed, the JH4AZ7050DZQR controller provides sensitive and reliable control over your e-bike's motor. When power is applied and the system is engaged (e.g., via throttle or pedal assist), the controller will regulate the motor's speed based on your input.

• Speed Control: The controller translates throttle input into motor speed, allowing for smooth acceleration and deceleration.
• Braking: When the brake levers are engaged, the controller will cut power to the motor, ensuring safe stopping.
• Direction Changes: The controller facilitates sensitive control for changes in direction, contributing to a stable ride.

6. Maintenance

To ensure the longevity and optimal performance of your NULKOMMA controller, consider the following maintenance guidelines:

• Heat Dissipation: The controller's aluminum alloy shell is designed with grooves for effective heat dissipation. Ensure the controller is mounted in a location that allows for adequate airflow and is not obstructed. Avoid covering the controller with materials that could trap heat.
• Cleaning: Periodically clean the exterior of the controller with a dry, soft cloth to remove dust and debris. Do not use liquid cleaners or immerse the controller in water.
• Connection Checks: Regularly inspect all wiring connections for tightness and signs of wear or corrosion. Secure any loose connections.
• High Temperature Protection: The controller features an automatic high-temperature protection mechanism. If the controller becomes excessively hot, it will temporarily cut off power to prevent damage. Allow the controller to cool down before resuming operation.

7. Troubleshooting

This section addresses common issues you might encounter with your motor controller.

8. Specifications

9. Warranty and Support

For warranty information, technical support, or service inquiries regarding your NULKOMMA JH4AZ7050DZQR Brushless Motor Controller, please contact NULKOMMA directly through their official channels or the retailer from whom you purchased the product. Keep your proof of purchase for any warranty claims.

Please note that the product has a return policy of 30 days from the date of purchase for refunds or replacements, as per retailer terms.