KT 17A Electric Bike Motor Controller User Manual

1. Introduction

This manual provides detailed instructions for the installation, operation, and maintenance of your KT 17A Electric Bike Motor Controller. Designed for 36V/48V electric bike systems with 350W motors, this square wave controller offers stable performance and efficient power management for your e-bike conversion.

2. Safety Information

Please read and understand all safety warnings and instructions before installing or operating the controller. Failure to do so may result in electric shock, fire, serious injury, or property damage.

• Always disconnect the battery power before performing any installation, maintenance, or troubleshooting.
• Ensure all connections are secure and properly insulated to prevent short circuits.
• Avoid exposing the controller to water or extreme moisture.
• Do not attempt to open or modify the controller casing, as this may void the warranty and pose safety risks.
• Ensure the controller is compatible with your motor and battery voltage (36V/48V universal for 350W motors).
• This controller must be matched with an instrument of the KT brand for proper functionality.

3. Product Features

• Enhanced Performance: Offers more stable and efficient operation with lower current consumption, contributing to a longer service life.
• Lamp Control: Equipped with double-headed light wires, allowing connection to front and rear lamps. The connected instrument can control the lamp's on/off state.
• Extended Driving Range: Designed to reduce the controller's temperature rise, thereby increasing the continuous driving range of your electric bike.
• Sensitive Control: Provides stable speed control and sensitive response for braking and directional changes.
• Durable Housing: The controller's outer casing is constructed from high-quality aluminum alloy, ensuring excellent heat dissipation and preventing overheating during operation.

4. Specifications

5. Package Contents

Upon opening your package, please verify that all items are present and undamaged:

• 1 x KT 17A Electric Bike Motor Controller
• 1 x User Manual (this document)

6. Setup and Installation

Before beginning installation, ensure your electric bike's battery is disconnected. Refer to the wiring diagram below for correct connections. This controller is designed for 350W motors and is compatible with 36V or 48V battery systems. Remember, this controller requires a KT brand instrument (display) for full functionality.

Wiring Connections:

1. Motor (9-Pin Connector): Connect the main motor cable to the corresponding 9-pin connector on the controller. Ensure the connection is firm.
2. PAS (Pedal Assist Sensor) (3-Pin & 2x 2-Pin Connectors): Connect your PAS sensor to the designated 3-pin connector. If your PAS system uses additional 2-pin connectors, connect them accordingly.
3. Brake (2x 2-Pin Connectors): Connect your brake levers (typically with cut-off switches) to the two 2-pin brake input connectors. These are usually low-level inputs.
4. Throttle (3-Pin Connector): Connect the throttle unit to the 3-pin throttle connector. This controls the motor's speed.
5. Battery Power (2x 2-Pin Connectors): Connect your 36V or 48V battery's power output to the two 2-pin battery power connectors. Ensure correct polarity.
6. Light (2x 2-Pin Connectors): Connect your electric bike's front and rear lights to the two 2-pin light cord connectors. These can be controlled via the KT instrument.
7. Display (5-Pin Connector): Connect your KT brand display unit to the 5-pin display connector. This is essential for the controller's operation and to access settings and information.

Important: Ensure all connectors are correctly matched and securely fastened. Incorrect wiring can damage the controller or other components.

7. Operating Instructions

Once the controller is correctly installed and connected to a KT brand display, follow these general operating steps:

1. Power On: Turn on your e-bike's battery and then power on the KT display unit. The display should illuminate and show system information.
2. Select Assist Level: Use the controls on your KT display to select your desired pedal assist level (if applicable).
3. Throttle Operation: Gently twist the throttle to engage the motor and control your speed.
4. Braking: Apply the brakes as needed. The brake levers with cut-off switches will signal the controller to stop motor power.
5. Light Control: If connected, use the appropriate button on your KT display to turn the front and rear lights on or off.
6. Power Off: When finished riding, power off the KT display and then turn off your e-bike's battery.

8. Maintenance

Proper maintenance will ensure the longevity and reliable performance of your controller:

• Keep Clean and Dry: Regularly wipe down the controller casing to remove dirt and debris. Ensure it remains dry and protected from water ingress.
• Inspect Connections: Periodically check all wire connections to ensure they are secure and free from corrosion or damage.
• Heat Dissipation: Ensure the controller's aluminum alloy casing is not obstructed, allowing for proper heat dissipation. Avoid covering it with insulating materials.
• Avoid Impact: Protect the controller from physical impacts or drops, which could damage internal components.

9. Troubleshooting

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

• No Power to Display/Motor:
  • Check if the battery is charged and properly connected.
  • Ensure all power cables to the controller and display are securely connected.
  • Verify the e-bike's main power switch (if any) is on.
• Motor Not Responding:
  • Check the throttle connection and ensure it's not damaged.
  • Verify the motor's main cable connection to the controller.
  • Ensure the brake levers are not engaged, as they cut off motor power.
  • Confirm the controller is matched with a KT brand instrument.
• Lights Not Working:
  • Check the light connections to the controller.
  • Ensure the lights are switched on via the KT display.
  • Inspect the light bulbs/LEDs for damage.

If problems persist after performing these checks, please contact customer support for further assistance.

10. User Tips

No specific user tips were available from reviews or Q&A for this product at this time. Always ensure all connections are waterproofed if riding in wet conditions.

11. Warranty and Support

For warranty information or technical support, please refer to the seller's policies or contact the BangBang Cycling Store directly. Keep your purchase receipt as proof of purchase.