Sabvoton SVMC72150-M BLDC Motor Controller User Manual

1. Introduction

The Sabvoton SVMC72150-M is an advanced sine wave Brushless DC (BLDC) motor controller designed for electric bicycles and scooters. This controller offers precise control, high efficiency, and programmability via PC or smartphone, making it suitable for 3KW-4KW hub or in-wheel motors operating between 48V and 72V. This manual provides essential information for safe installation, operation, and maintenance of your controller.

2. Safety Information

• Always disconnect the battery before performing any installation, maintenance, or wiring adjustments.
• Ensure all connections are secure and properly insulated to prevent short circuits.
• Installation should ideally be performed by a qualified technician or individuals with sufficient knowledge of electric vehicle systems.
• Avoid exposing the controller to water, excessive moisture, or extreme temperatures.
• Do not attempt to open or modify the controller casing, as this may void the warranty and pose safety risks.

3. Package Contents

Upon opening your package, please verify that all the following items are included:

• 1 x Sabvoton SVMC72150-M Unlock Version BLDC Motor Controller
• 1 x Bluetooth Adapter

Sabvoton SVMC72150-M controller with included Bluetooth adapter.

Sabvoton controller packaging box.

4. Specifications

General Specifications:

Dimensions and Weight:

• Size: 275 mm (Length) * 122 mm (Width) * 63 mm (Height)
• Weight: 2.1 kgs

Dimensional drawing of the SVMC72150-M V2 controller.

5. Compatibility

• The Sabvoton controller is suitable for Spoke, In-wheel, or Hub motors with a 120° Phase angle.
• It is NOT recommended for use with Mid-Drive motors.
• This controller is designed to be matched with a Hall sensor display.
• It CANNOT be matched with TFT displays such as UKC1 or 750C, which use APT protocol.
• For other Sabvoton series controllers:
• SVMC-M conventional series: Matches Hall meter, meter communication: Hall signal.
• SVMC-APT series: Matches TFT UKC1, 750C meter, meter communication: APT protocol.
• SVMC-H6 series: Matches TFT H6 meter, meter communication: New Thinking NO.2 Protocol.

6. Setup and Installation

Careful wiring is crucial for the proper function and safety of your electric vehicle. Refer to the diagrams and pin definitions below for correct connections.

General Wiring Diagram:

General wiring diagram for SVMC series controllers. This diagram illustrates connections for battery, motor phases, Hall sensors, throttle, brakes, and other control signals.

Pin Definitions:

The controller features various connectors for different functions. Ensure each wire is connected to its corresponding function as described below.

Detailed pin definitions for Hall Sensor, Ignition, 0-5V Throttle, and Three Speed functions.

• Hall Sensor: Red (Hall positive), Black (Hall negative), White (Temp sensor), Yellow/Blue/Green (Hall signal).
• Ignition: Orange (Ignition).
• 0-5V Throttle: Red (Throttle positive), Grey (Throttle signal), Black (Throttle negative).
• Three Speed: Pink (High speed), Black (Middle speed), Transparent (Low speed).

Detailed pin definitions for 0-5V E-brake, Hall Speed Meter, High Brake 12V, Reverse & Low Brake, and USB Cable.

• 0-5V E-brake: Red (Throttle positive), Grey (E-brake throttle signal), Black (Throttle negative).
• Hall Speed Meter: Blue (Hall speed meter).
• High Brake 12V: Purple (High brake 12V).
• Reverse & Low Brake: White (Reverse), Yellow (Low brake 0V).
• USB Cable: For PC or Phone program.

Installation Steps:

1. Mount the Controller: Securely mount the controller to the frame of your electric vehicle. The V2 version features a new cover design for mounting.
2. Connect Main Power: Connect the main battery positive (Battery+) and negative (Battery-) terminals to the controller.
3. Connect Motor Phases: Connect the U, V, W phase wires from the motor to the corresponding terminals on the controller.
4. Connect Hall Sensors: Connect the Hall sensor wires from the motor to the Hall sensor connector on the controller.
5. Connect Throttle: Connect the 0-5V throttle wires.
6. Connect Brakes: Connect the High Brake (12V) and Low Brake (0V) wires as needed.
7. Connect Ignition: Connect the ignition wire.
8. Connect Auxiliary Functions: Connect any other auxiliary functions such as Three Speed, Reverse, Hall Signal Meter, Motor Temp Sensor, Regen, and Flux Weakening Current according to the pin definitions.
9. Initial Power-Up: After all connections are made, carefully power up the system and perform initial tests.

Example application of the controller in an electric scooter setup.

7. Operation

The Sabvoton SVMC72150-M controller is programmable, allowing you to fine-tune its performance parameters to match your motor and riding preferences. Programming can be done via a PC or a smartphone using the provided Bluetooth adapter.

Programming:

Use the Bluetooth adapter to connect your controller to a PC or smartphone. Dedicated software/app interfaces allow you to adjust various parameters such as:

• Battery voltage limits
• Phase current and DC current limits
• Throttle response
• Regenerative braking settings
• Flux weakening current
• Motor temperature sensor settings

Computer and mobile application programming interface for the controller.

Functions:

The controller supports the following functions:

• Throttle (0-5V): Controls motor speed based on input voltage.
• Ignition: Powers the controller on/off.
• Hall Signal Meter: Provides speed feedback.
• High Brake (12V) & Low Brake (0V): Activates braking functions.
• E-Brake (0-5V): Electronic braking control.
• Three Speed: Allows selection between high, middle, and low-speed modes.
• Reverse: Enables reverse movement.
• Regen: Regenerative braking functionality.
• Flux Weakening Current: Advanced motor control feature for higher top speeds.

8. Maintenance

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

• Keep Clean: Regularly clean the exterior of the controller to prevent dust and debris buildup, which can affect heat dissipation.
• Check Connections: Periodically inspect all wiring connections for tightness and signs of wear or corrosion. Loose connections can lead to intermittent operation or damage.
• Avoid Overheating: Ensure the controller has adequate airflow and is not covered, especially during prolonged high-power operation.
• Protect from Elements: While the controller is robust, protect it from direct exposure to heavy rain or submersion in water.

9. Troubleshooting

If you encounter issues with your controller, consider the following common problems and solutions:

• Motor Not Responding: Check all power connections, motor phase wires, and Hall sensor connections. Verify that the throttle is correctly connected and functioning.
• Erratic Motor Behavior: This could indicate loose Hall sensor connections, incorrect motor phase wiring, or improper controller programming. Recheck wiring and programming parameters.
• Auxiliary Functions Not Working: Many functional interfaces may require modification rather than being plug-and-play. Carefully review the pin definitions and ensure correct wiring for each auxiliary function.
• Speedometer Display Issues: If your speedometer is not working correctly after installation, it may be due to compatibility. This controller is designed for Hall sensor displays and may not integrate seamlessly with all original vehicle speedometers without modification.
• Controller Overheating: Reduce load, ensure adequate ventilation, and check for any short circuits in the motor or wiring.

10. User Tips

• Motor Type: This Sabvoton controller is specifically designed for Spoke, In-wheel, or Hub motors with a 120° phase angle. It is generally not compatible with Mid-Drive motors.
• Display Compatibility: Ensure your display is a Hall sensor type. This controller is not compatible with TFT displays like UKC1 or 750C.
• Wiring Verification: Before making any permanent connections or powering up, thoroughly check the function lines on your original vehicle and the communication signals of any connected meters. Most functional interfaces may require custom wiring rather than direct plug-and-play.
• Programming: Utilize the PC or smartphone programming options to fine-tune the controller's performance to your specific motor and riding style for optimal results.

11. Warranty and Support

The Sabvoton SVMC72150-M controller comes with a 1-year warranty from the date of purchase. This warranty covers manufacturing defects and malfunctions under normal operating conditions.

• Warranty Exclusions: The warranty does not cover damage caused by improper installation, misuse, unauthorized modifications, accidents, or man-made damage.
• Return for Repair/Replacement: In the event of a warranty claim, the buyer is responsible for the shipping costs associated with returning the product for repair or replacement.
• Technical Knowledge: If you lack experience in electric kit assembly, it is strongly advised to seek professional assistance for installation to prevent potential damage and ensure safe operation. There is no warranty for man-made damage resulting from incorrect assembly.
• Contact Support: For any issues, technical assistance, or warranty claims, please contact the seller or manufacturer's support channel.