NULKOMMA JH4AZ2118DZLYD Ebike Controller User Manual

1. Introduction

This manual provides essential information for the proper installation, operation, and maintenance of your NULKOMMA JH4AZ2118DZLYD Brushless Motor Controller. This controller is designed for electric bicycles and scooters, offering stable speed control and responsive handling. Please read this manual thoroughly before installation and use to ensure optimal performance and safety.

What's in the Box

• JH4AZ2118DZLYD Controller

2. Product Features

• Sensitive Control: Provides steady speed and sensitive control for braking and direction changes. The durable wires and interfaces are designed for long-term reliability and reduced malfunction.
• Good Heat Dissipation: The controller shell is constructed from aluminum alloy, which effectively protects the internal circuitry and facilitates heat dissipation, preventing thermal overloading.
• Easy Installation: Interfaces are clearly labeled with instructions for straightforward connection. This controller is suitable for various electric bicycles and scooters. Ensure all interfaces are correctly matched and connected.

3. Setup and Installation

Proper installation is crucial for the safe and efficient operation of your ebike controller. Always ensure the power is off before connecting or disconnecting any components.

3.1 Pre-Installation Check

• Verify that the controller specifications (voltage, current) match your ebike's motor and battery requirements.
• Inspect the controller for any visible damage.
• Familiarize yourself with the various wire interfaces and their labels.

Figure 1: Top view of the NULKOMMA JH4AZ2118DZLYD Ebike Controller, displaying the product label with model number, voltage, and current ratings.

3.2 Wiring Connections

The controller features multiple labeled interfaces for easy connection. Refer to the labels on the controller's wires and your ebike's wiring diagram.

1. Power Wires: Connect the main power wires (typically red for positive, black for negative) to your ebike's battery. Ensure correct polarity.
2. Motor Wires: Connect the three phase wires (usually green, blue, yellow) from the controller to the corresponding motor phase wires.
3. Hall Sensor Wires: Connect the Hall sensor wires (typically five thin wires) from the controller to the motor's Hall sensor connector.
4. Throttle Wires: Connect the throttle wires (usually red, green, black) to your ebike's throttle unit.
5. Brake Levers: Connect the brake lever wires to the controller. These typically cut power to the motor when brakes are applied.
6. Other Connections: Connect any additional wires such as those for the display, pedal assist sensor (PAS), or lights, following their respective labels.

Figure 2: Overview of the NULKOMMA Ebike Controller, showing the complete set of wiring harnesses extending from the unit.

Figure 3: Detailed view of the individual wires and connectors, highlighting the color coding and interface types for proper connection.

3.3 Post-Installation Check

• Double-check all connections to ensure they are secure and correctly matched.
• Ensure no bare wires are exposed that could cause a short circuit.
• Mount the controller securely in a location that allows for adequate airflow for heat dissipation and protects it from physical damage and moisture.

Figure 4: Side profile of the controller, illustrating its aluminum alloy casing designed for heat dissipation and protection.

4. Operating Instructions

Once the controller is correctly installed, operating your ebike or scooter is straightforward.

1. Power On: Turn on the main power switch of your ebike/scooter. The display (if applicable) should illuminate.
2. Throttle Control: Gently twist the throttle to engage the motor. The controller will provide power to the motor, allowing for acceleration.
3. Braking: Apply the brake levers to slow down or stop. The controller is designed to cut motor power when brakes are engaged, ensuring safety.
4. Pedal Assist (if applicable): If your ebike has a pedal assist system (PAS), pedaling will activate the motor, providing assistance based on the selected assist level.
5. Power Off: Always turn off the main power switch when you are finished riding or when leaving the ebike unattended.

5. Maintenance

Regular maintenance helps prolong the life and ensure the reliability of your ebike controller.

• Keep Dry: Avoid exposing the controller to excessive moisture or water. While the aluminum casing offers some protection, it is not fully waterproof.
• Cleanliness: Periodically clean the exterior of the controller to prevent dust and dirt buildup, which can hinder heat dissipation. Use a dry, soft cloth.
• Connection Checks: Regularly inspect all wire connections for looseness or corrosion. Secure any loose connections.
• Physical Damage: Avoid impacts or physical damage to the controller.
• Temperature: Ensure the controller is mounted in a location with adequate airflow to prevent overheating, especially during prolonged use or in hot weather.

6. Troubleshooting

If you encounter issues with your ebike controller, refer to the following common troubleshooting steps:

• No Power:
  • Check battery charge level.
  • Verify main power switch is on.
  • Inspect battery and controller power wire connections for looseness or damage.
• Motor Not Responding to Throttle:
  • Check throttle wire connections.
  • Ensure brake levers are not engaged (some systems cut motor power when brakes are active).
  • Inspect motor phase and Hall sensor wire connections.
• Intermittent Power/Rough Operation:
  • Check all wire connections for intermittent contact.
  • Ensure no wires are pinched or damaged.
  • Verify motor and Hall sensor connections are secure.
• Overheating:
  • Ensure the controller is mounted in a well-ventilated area.
  • Reduce prolonged high-power usage if possible.
  • Check for short circuits in the motor or wiring.

If these steps do not resolve the issue, contact customer support for further assistance.

7. Specifications

8. Warranty and Support

NULKOMMA is committed to providing quality products and customer satisfaction.

8.1 Warranty Information

If you are not satisfied with your product, you may apply for an unconditional return and refund within 180 days of receipt.

8.2 Customer Support

For any questions or issues regarding this product, please contact us via email at any time. We will respond promptly to assist you.

Note: This is a customized product. To ensure compatibility with your bike, NULKOMMA may contact you after your order is placed. Please monitor your messages and respond in a timely manner.