1. Introduction
Welcome to the instruction manual for your new NDECYC YF 48/72V 3000W 60A Brushless DC Ebike Square Wave Controller. This manual provides essential information for the safe and efficient installation, operation, and maintenance of your ebike controller and display system. Please read it thoroughly before use and keep it for future reference.
Product Overview
This product is a high-power brushless DC square wave controller designed for electric bicycles, compatible with 48V or 72V systems and capable of handling up to 3000W. It comes as a set with either a UKC1 Color Display or an SW900 Display, providing real-time riding data and control. The system is engineered for robust performance and includes necessary wiring for integration into your ebike.
2. Safety Information
⚠ WARNING: Please mind potential fire risk and strictly follow the instruction manual for charging and storage of associated battery components.
- Always ensure the ebike's power source is completely disconnected before attempting any installation, maintenance, or wiring adjustments.
- Do not expose the controller or display to water, extreme temperatures, or direct sunlight for extended periods.
- Keep all electrical components away from children and pets.
- Only use batteries and chargers that are compatible with the specified voltage (48V or 72V) and power requirements of this controller.
- If you are unsure about any installation or troubleshooting steps, consult a qualified ebike technician.
- Ensure all connections are secure and properly insulated to prevent short circuits.
3. Package Contents
Please verify that all items listed below are included in your package:
- 1x 48/72V 60A Brushless DC Ebike Controller
- 1x Matching Display (UKC1 Color Display or SW900 Display, depending on your selection)
- 1x 5Pin Controller Box
- 1x Ebike Controller Bag
Image: Contents of the product package.
4. Specifications
| Feature | Detail |
|---|---|
| Brand Name | NDECYC |
| Type | Controller |
| Voltage | DC 48V/72V |
| Current | 60A ± 1A |
| Brakes | Low Level |
| Booster | 1:1 |
| Speed Mode | 1.1-4.2V Dual Mode |
| Controller Dimensions | Approx. 21.1cm (L) x 11.5cm (W) x 5.3cm (H) |
| Display Type | UKC1 Color Display or SW900 Display |
| UKC1 Display Screen | High-contrast 3.5-inch IPS colorful matrix screen, rotatable. Suitable for low temperatures (Max -20℃). |
| UKC1 Display Features | Speed display (AVG SPEED, MAX SPEED, Real-time SPEED), Kilometers / Miles (user-settable), Intelligent power indicator for stable power indication. |
Image: Controller dimensions.
Image: Controller specification label.
Image: UKC1 Color Display with dimensions and feature highlights.
Image: SW900 Display.
5. Setup and Installation
This section guides you through the installation of the ebike controller and display. Ensure your ebike's power is completely off and the battery is disconnected before proceeding.
5.1 Controller Installation
- Mount the Controller: Securely mount the controller to your ebike frame. The provided controller bag can be used for protection and convenient placement.
- Connect Battery Wires:
- Connect the thick red wire from the controller to the positive (+) terminal of your ebike battery.
- Connect the thick black wire from the controller to the negative (-) terminal of your ebike battery.
- Connect Motor Phase Wires: Connect the three thick wires (typically green, yellow, blue) from the controller to the corresponding motor phase wires.
- Connect Motor Hall Sensor Wires: Connect the thinner multi-wire connector from the controller to the motor's Hall sensor port.
- Connect Throttle Wire: Plug the throttle wire into the designated throttle input on the controller.
- Connect Brake Lever Wires: Connect the brake lever wires to the brake lever input on the controller.
- Connect LCD Display Wire: Plug the display cable into the designated LCD Display port on the controller.
- Connect Lock Connector (if applicable): Connect the lock connector to the controller.
- Connect 25KPH Limited Wire (if applicable): Connect the 25KPH speed limit wire to the controller.
- Connect Light Battery's Voltage Wire (if applicable): Connect the light battery's voltage wire to the controller.
Image: Controller wiring diagram with labeled connections.
5.2 Display Installation (UKC1 / SW900)
- Mount the Display: Attach the display securely to your ebike handlebars using the provided mounting bracket.
- Connect Display Cable: Connect the display cable to the LCD Display port on the controller.
- Final Check: Ensure all connections are firm, properly seated, and insulated to prevent any electrical issues.
Image: UKC1 Color Display mounted on handlebars.
Image: SW900 Display with mounting options.
6. Operating Instructions
6.1 Powering On/Off
To power on the ebike system, ensure the battery is connected and press the power button on your display. To power off, press and hold the power button until the display turns off.
6.2 Display Functions (UKC1 Example)
The UKC1 display provides various real-time riding data and settings:
- RT SPEED: Displays your current real-time speed.
- AVG SPEED: Shows the average speed of your current trip.
- MAX SPEED: Records the maximum speed achieved during your ride.
- ASSIST: Indicates the current pedal assist level.
- POWER: Shows the current power output from the motor.
- BATTERY INDICATOR: Provides a visual representation of the remaining battery charge.
- TRIP/KM: Displays the distance traveled for the current trip or total kilometers, depending on settings.
- TIME: Shows the elapsed riding time.
The UKC1 display screen is rotatable, allowing you to switch between horizontal and vertical orientations for optimal viewing comfort.
Image: UKC1 Color Display in operation.
6.3 Speed Control
The controller supports a 1.1-4.2V dual mode speed control. You can control your speed using the throttle for direct acceleration or utilize the pedal assist system (PAS) for motor assistance while pedaling.
6.4 Brake Function
The controller is designed to work with low-level brakes. Engaging the brake levers will immediately cut off power to the motor, ensuring safe stopping.
7. Maintenance
- Connection Checks: Regularly inspect all electrical connections for tightness, corrosion, or signs of wear. Loose connections can lead to intermittent power or system failure.
- Cleaning: Keep the controller and display clean and dry. Use a soft, damp cloth for cleaning; avoid abrasive cleaners or solvents.
- Wiring Inspection: Periodically check all wiring for any cuts, fraying, or damage. Replace damaged wires immediately to prevent electrical hazards.
- Ventilation: Ensure the controller is adequately ventilated, especially during prolonged use, to prevent overheating. Do not cover the controller with materials that restrict airflow.
- Storage: When not in use, store the ebike and its components in a cool, dry place, away from direct sunlight and extreme temperatures.
8. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| System does not power on | Loose battery connection, discharged battery, faulty display or controller. | Check all battery connections, ensure the battery is fully charged, inspect display and controller cables for damage. |
| Motor not responding to throttle/PAS | Loose motor phase wires, Hall sensor issue, throttle malfunction, PAS sensor issue. | Verify all motor and Hall sensor connections. Test the throttle and PAS sensor for proper function. |
| Inaccurate speed reading on display | Incorrect wheel size setting in display, loose speed sensor connection. | Check the display settings to ensure the correct wheel size is configured. Ensure the speed sensor is properly installed and connected. |
| Brakes not cutting motor power | Loose or damaged brake lever sensor wire. | Inspect the brake lever sensor wires and connections. Ensure they are securely attached and undamaged. |
9. User Tips
- Battery Recommendation: For optimal performance and compatibility, it is recommended to use a high-quality lithium battery that matches the specified voltage (48V or 72V) of your controller. Ensure the battery's discharge rate can support the 3000W power output.
- Controller Color: Please note that the controller may come in either silver or black, and the color is selected randomly during packaging. This aesthetic difference does not affect the functionality or performance of the unit.
- Square Wave vs. Sine Wave: This specific controller model operates as a square wave controller. If your ebike motor or preference requires a sine wave controller for a 3000W system, ensure you purchase the appropriate sine wave model, as this unit is not interchangeable in terms of wave type.
10. Warranty and Support
For any warranty claims, technical assistance, or support inquiries regarding your NDECYC ebike controller and display, please contact the seller or manufacturer directly. It is advisable to retain your purchase receipt or proof of purchase for warranty validation.
