1. Introduction
This manual provides essential information for the safe and efficient installation, operation, and maintenance of your JP Electric Scooter Brushless Motor Controller. Please read this manual thoroughly before installation and use to ensure optimal performance and safety.
Figure 1: JP Brushless Motor Controllers (36V 19A and 48V 25A variants)
2. Specifications
The JP Brushless Motor Controllers are available in two main variants, each designed for specific voltage and current requirements. Refer to the labels on your controller for exact specifications.
Figure 2: Controller Labels for 36V 19A and 48V 25A Models
2.1. Model: JP-FJXLZG119Q202406099 (36V 19A)
Figure 3: 36V 19A Controller Label
| Specification | Value |
|---|---|
| Rated Voltage | DC36V |
| Undervoltage Protection | 29V |
| Current Limit | 19A |
| Brake Level | Low Level |
| Function | Anti-theft alarm |
2.2. Model: JP-FJXLZG49S202405078 (48V 25A)
Figure 4: 48V 25A Controller Label
| Specification | Value |
|---|---|
| Rated Voltage | DC48V |
| Undervoltage Protection | 37V |
| Current Limit | 25A |
| Brake Level | Low Level |
| Function | LCD Instrument |
3. Installation and Setup
Proper installation is crucial for the safe and correct operation of your electric scooter. If you are not confident in performing the installation yourself, it is highly recommended to seek assistance from a qualified technician.
Figure 5: Controller with Wiring Harness
3.1. Safety Precautions
- Always disconnect the battery power before attempting any installation or wiring.
- Ensure all connections are secure and insulated to prevent short circuits.
- Verify that the controller's voltage and current ratings match your scooter's battery and motor specifications.
- Avoid installing the controller in areas exposed to direct water, excessive heat, or vibration.
3.2. Wiring Connections
The controller features multiple wiring harnesses for various scooter components. While specific wiring diagrams are not provided, typical connections include:
- Battery Power (Thick Red/Black Wires): Connect to your scooter's battery. Ensure correct polarity (Red to Positive, Black to Negative).
- Motor Phase Wires (Thick Yellow/Green/Blue Wires): Connect to the corresponding phase wires of your brushless motor.
- Hall Sensor Wires (Thin Wires in a Bundle): Connect to the motor's Hall sensors. (Note: This is a 'Without Hall Controller', implying it can operate sensorless, but may still have Hall connections for compatibility or optional use).
- Throttle (Typically Red/Black/Green or Blue Wires): Connect to the scooter's throttle assembly.
- Brake Levers (Typically two wires per lever): Connect to the brake cut-off switches. The controller supports low-level brake signals.
- Display/Instrument (For 48V 25A model): Connect to your scooter's LCD instrument panel for speed, battery level, and other data.
- Anti-theft Alarm (For 36V 19A model): Connect to the anti-theft system if your scooter is equipped.
- Other Auxiliary Connections: May include cruise control, speed limit, reverse, or learning wires. Consult your scooter's specific wiring diagram for these.
After making all connections, secure the controller in a protected area on your scooter, ensuring good ventilation.
4. Operating Instructions
Once installed, operating the controller is straightforward as it manages the motor's power delivery based on user input.
- Power On: Turn on your scooter's main power switch. The controller will initialize.
- Throttle Control: Gently twist the throttle to accelerate. The controller will regulate power to the motor.
- Braking: Engage the brake levers. The controller will cut power to the motor and activate the braking system.
- LCD Instrument (48V 25A model): Monitor your speed, battery status, and other parameters on the connected LCD display.
- Anti-theft Alarm (36V 19A model): If connected, activate and deactivate the anti-theft function as per your scooter's alarm system instructions.
5. Maintenance
Regular maintenance helps prolong the life of your controller and ensures safe operation.
- Keep Dry: Protect the controller from moisture and water ingress.
- Cleanliness: Periodically inspect and clean the controller's exterior to remove dirt and debris.
- Connection Check: Regularly check all wiring connections for tightness and signs of wear or corrosion.
- Temperature: Ensure the controller has adequate airflow to prevent overheating, especially during prolonged use or in hot weather.
6. Troubleshooting
If you encounter issues with your controller, refer to the following common problems and solutions.
| Problem | Possible Cause | Solution |
|---|---|---|
| Scooter does not power on | Loose battery connection, dead battery, faulty power switch | Check battery connections, charge battery, inspect power switch. |
| Motor not responding to throttle | Loose throttle connection, faulty throttle, motor phase wires disconnected | Check throttle wiring, test throttle, verify motor phase wire connections. |
| Motor runs intermittently or with reduced power | Low battery voltage, overheating controller, partial motor phase wire connection | Charge battery, allow controller to cool, check motor phase wires. |
| Brakes not cutting motor power | Loose brake lever switch connection, faulty brake switch | Inspect brake lever wiring and switches. |
| LCD display not working (48V 25A model) | Loose display connection, faulty display | Check display wiring, ensure display is compatible and functional. |
If troubleshooting steps do not resolve the issue, contact customer support or a professional technician.
7. User Tips
- Speed Limitation: The controller's current limit (19A or 25A) directly influences the maximum power output and thus the potential top speed of your scooter. Ensure your motor and battery are rated for the controller's output.
- Motor Compatibility: These controllers are designed for single brushless motors. If you intend to use a dual-motor setup, you will typically require two separate controllers or a specialized dual-motor controller.
- Professional Installation: For complex wiring or if you are unsure, professional installation is always recommended to prevent damage to the controller or scooter.
8. Frequently Asked Questions (FAQ)
- Q: What is the speed limitation and maximum speed of a scooter using this controller?
- A: The controller itself has a current limit (19A for 36V model, 25A for 48V model) which dictates the maximum power it can deliver to the motor. The actual maximum speed of your scooter will depend on various factors including motor wattage, battery voltage, scooter weight, rider weight, terrain, and tire size. The controller does not impose a specific speed limit in km/h or mph, but rather a power limit.
- Q: Is this controller compatible with dual motors?
- A: This controller is designed for a single brushless motor. For a dual-motor electric scooter, you would typically need either two individual controllers (one for each motor) or a specialized controller designed to manage two motors simultaneously. Please verify your scooter's requirements before purchase.
9. Warranty and Support
For any questions, technical support, or warranty inquiries, please contact the seller or manufacturer directly. Keep your purchase records for reference.
