JRAHK 3-Mode Ebike Controller

Introduction

This manual provides detailed instructions for the installation, operation, and maintenance of your JRAHK 3-Mode Ebike Controller. Designed for electric bicycles and scooters, this brushless DC controller offers versatile performance with its intelligent three-mode functionality. Please read this manual thoroughly before installation and use to ensure safe and optimal performance.

Figure 1: JRAHK 3-Mode Ebike Controller

Product Overview: Three-Mode Controller

The JRAHK 3-Mode Controller is an advanced sine wave controller capable of operating in three distinct modes:

1. Sine Wave Mode: Provides a quiet start and smooth operation. This is the default mode.
2. Square Wave Mode: The controller automatically switches to this mode if the Hall sensor is damaged.
3. No Hall Mode: Engages when no Hall sensors are connected to the motor.

The controller automatically detects and switches between these modes based on the motor's status and Hall sensor connection. It is suitable for various motors, including in-wheel motors and differential motors.

Important Tips:

• Only in-wheel motors equipped with Hall sensors can utilize the sine wave mode.
• When operating with other types of motors or if Hall sensors are not present/damaged, the controller will automatically switch to square wave mode or no Hall mode.

Specifications

Figure 2: Key Specifications of the 6-Tube Brushless DC Controller

Dimensions:

Figure 3: Controller Dimensions

• Length: 130mm (5.12 inches)
• Width: 75mm (2.95 inches)
• Height: 35mm (1.38 inches)

Installation Instructions

Follow these steps carefully for proper installation of your JRAHK 3-Mode Ebike Controller. Refer to the wiring diagram in Figure 4 for visual guidance.

1. Step 1: Initial Connections
   Connect the following wires: Motor phase wire (1), Power cord (2), Key switch (3), Hall sensor (9), and Throttle (12).
2. Step 2: Intelligent Learning Line Connection
   Connect the Intelligent learning line (11) with the motor suspended. Ensure the motor is in an overhang position for this step.
3. Step 3: Motor Learning Process
   The motor will initiate a forward/reverse state. If a reversal occurs, disconnect the Intelligent learning line (11) and reconnect it. Once the motor is in the forward state, wait for 10 seconds to complete the learning process.
4. Step 4: Final Wiring
   Proceed with the remaining wiring connections according to your vehicle's specific requirements and the provided wiring diagram.

Wiring Diagram and Line Description

The following diagram illustrates the various connections on the JRAHK 3-Mode Ebike Controller. Each numbered line corresponds to a specific function.

Figure 4: Controller Wiring Diagram

Line Feature Details:

1. Motor phase wire
2. Power cord
3. Key switch
4. Phase line speed measurement
5. One-line communication agreement (for display, etc.)
6. Three-speed shifting
7. Anti-theft signal
8. Anti-theft power supply
9. Hall sensor
10. Hall speed test
11. Intelligent learning line
12. Throttle
13. Reversal
14. PAS (Pedal Assist System)
15. High level braking
16. Low level braking
17. Cruising

Note: The sine wave mode functions exclusively with brushless DC motors equipped with Hall sensors. If your motor lacks a Hall sensor or if the sensor is damaged, the controller will operate in square wave mode.

Operation

Choosing an Ebike Controller:

It is crucial that the controller's voltage rating matches your battery and motor. For non-programmable controllers, ensure the power and voltage ratings align with your motor's specifications. For example, if your motor is 36V, the controller must also be 36V.

Function of an Ebike Controller:

The electric bike controller serves as the central processing unit for your ebike's electrical system. Its primary function is to receive inputs from various components such as the throttle, speed sensor, display, battery, and motor. Based on these inputs, it determines and signals the appropriate output to control the motor's power delivery, manage battery usage, and provide feedback to the display.

Figure 5: Controller with various connectors

Troubleshooting

• Motor not working with Hall sensor: The controller is designed to automatically switch to square wave mode if the Hall sensor is damaged or not connected. Ensure your motor has functional Hall sensors if you intend to use sine wave mode.
• Display connectivity: The controller features a "One-line communication agreement" line (Line 5). Compatibility with specific LCD displays depends on the display's communication protocol. Consult your display's manual for wiring instructions.
• Throttle/Speed change wiring issues: If your scooter or ebike has a different number of wires for the accelerator or speed change (e.g., two wires on the scooter vs. three on the controller), carefully review the wiring diagrams for both your controller and the component to ensure correct matching and avoid damage. Incorrect wiring can lead to malfunction.
• Maximum speed: The maximum speed is primarily determined by the motor's specifications and the power output of the controller. This controller supports 350W-400W motors.
• Regenerative braking: Regenerative braking is not explicitly listed as a feature of this controller.

User Tips

• Voltage Matching: Always ensure that the voltage rating of your controller, battery, and motor are compatible to prevent damage and ensure proper function.
• Wiring Verification: Before powering on, double-check all wiring connections against the provided diagram to avoid short circuits or incorrect operation.
• Hall Sensor Awareness: Understand that the controller's operating mode (sine wave, square wave, no hall) depends on the presence and functionality of Hall sensors in your motor.

Safety Information

⚠️ Please mind potential fire risk and strictly follow the instruction manual for charging and storage of your ebike's battery and related components. Always ensure proper ventilation and avoid overcharging.

Support and Warranty

For any technical assistance, troubleshooting beyond this manual, or warranty inquiries, please contact the manufacturer or your seller directly. Keep your purchase records for reference.