NULKOMMA LSW772-147-1F Brushless Motor Controller User Manual

1. Introduction

This manual provides essential information for the safe and efficient use of your NULKOMMA LSW772-147-1F Brushless Motor Controller. Designed for electric bicycles and scooters, this controller offers steady speed control and sensitive response for braking and direction changes. Its aluminum alloy shell ensures good heat dissipation, preventing thermal overloading and promoting long-term durability. Please read this manual thoroughly before installation and operation.

2. Safety Information

• Always disconnect the power source (battery) before performing any installation, maintenance, or troubleshooting.
• Ensure all connections are secure and correctly matched to prevent short circuits or damage to the controller and other components.
• Avoid exposing the controller to water or extreme temperatures.
• If you are unsure about any installation steps, consult a qualified technician.
• Verify the product model matches your bike's requirements before installation.

3. Product Components

The NULKOMMA LSW772-147-1F Brushless Motor Controller package includes the main controller unit with integrated wiring harnesses. Familiarize yourself with the controller and its various connectors before proceeding with installation.

Figure 3.1: The LSW772-147-1F controller unit, showing the product label with key specifications.

Figure 3.2: The controller with its complete set of multi-colored wiring harnesses and connectors laid out.

4. Technical Specifications

5. Installation Guide

The controller features clearly labeled interfaces for easy installation. Carefully identify each connector and ensure it is correctly matched to its corresponding component on your electric bicycle or scooter. Refer to the video demonstration and images below for visual guidance.

Connection Steps:

1. Identify Power Connectors: Locate the main power input wires, typically thicker red and black wires, which connect to your battery. Ensure correct polarity.
2. Motor Phase Wires: Connect the three main motor phase wires (usually yellow, green, blue) to their corresponding motor wires. These are typically larger gauge wires.
3. Hall Sensor Wires: Connect the Hall sensor wires (often a multi-pin connector with smaller wires) to the motor's Hall sensor port. This provides feedback for motor rotation.
4. Throttle Connection: Connect the throttle wires to the designated throttle input on the controller. This allows for speed control.
5. Brake Lever Connections: Connect the brake lever wires. These typically cut power to the motor when the brakes are applied.
6. Display/Meter Connection: If applicable, connect the display or meter wires to provide speed, battery level, and other information.
7. Other Accessory Connections: Connect any other accessories such as lights, PAS (Pedal Assist System) sensors, or cruise control, ensuring each is connected to its correctly labeled port.

After making all connections, double-check for secure fitment and correct matching before applying power. The controller's robust wires and interfaces are designed for durability and to minimize malfunction.

Figure 5.2: A close-up view of the diverse connectors, each designed for specific functions and labeled for ease of installation.

6. Operating Instructions

Once installed, the NULKOMMA LSW772-147-1F controller provides sensitive and stable control for your electric vehicle. To operate:

• Power On: Turn on your electric bicycle or scooter's main power switch. The controller will initialize.
• Throttle Control: Gently apply the throttle to accelerate. The controller is designed for sensitive control, allowing for smooth acceleration and deceleration.
• Braking: Use your vehicle's brake levers. The controller will cut power to the motor when brakes are engaged, ensuring safe stopping.
• Direction Changes: The controller facilitates sensitive control for direction changes, contributing to a responsive riding experience.

7. Care and Maintenance

To ensure the longevity and optimal performance of your controller, follow these maintenance guidelines:

• Keep Clean: Regularly clean the exterior of the controller to prevent dust and debris buildup, which can affect heat dissipation.
• Avoid Moisture: Protect the controller from direct exposure to water and high humidity. While the aluminum alloy shell offers protection, excessive moisture can damage internal circuits.
• Check Connections: Periodically inspect all wire connections to ensure they remain secure and free from corrosion. Loose connections can lead to intermittent operation or damage.
• Heat Dissipation: Ensure the controller is mounted in a location that allows for adequate airflow to utilize its good heat dissipation properties.

8. Troubleshooting

If you encounter issues with your controller, consider the following basic troubleshooting steps:

• No Power: Check the battery connection and ensure the battery is charged. Verify the main power switch is on.
• Motor Not Responding: Inspect all motor phase wires and Hall sensor connections for looseness or damage. Ensure the throttle is correctly connected and functioning.
• Intermittent Operation: Check all wiring harnesses for secure connections. Loose wires are a common cause of intermittent issues.
• Overheating: Ensure the controller is not covered or obstructed, allowing for proper airflow and heat dissipation. Reduce continuous heavy load if possible.

For persistent issues, please contact customer support.

9. Warranty and Support

NULKOMMA offers a 180-day unconditional return and refund policy if you are not satisfied with the product received. For any product-related inquiries or support, please do not hesitate to contact us via email. We are committed to providing prompt assistance.

Please refer to your purchase documentation for specific contact details or visit the NULKOMMA store on Amazon for further information.