JUYI
JUYI Control Card 12V 24V 36V BLDC Motor Controller with 15A Continuous Current & RPM Pulse Output
JUYI Control Card 12V 24V 36V BLDC Motor Controller with 15A Continuous Current & RPM Pulse Output
Application Notes:
1. Motor Compatibility
- Verify the motor’s voltage and power ratings must not exceed the driver board’s rated specifications.
2. Application Scope & Adjustments
- Designed exclusively for sensorless BLDC motors. Not all 3-phase motors are compatible.
- If issues arise (e.g., startup jitter, reverse rotation, high current, unstable speed, or load failure),
adjust individual component parameters to optimize performance.
3. Thermal Management
- No forced cooling required for motors ≤60W (ensure ventilation).
- Heat sink mandatory for motors >60W. Follow insulation guidelines (see diagram).
4. Reverse Polarity Warning
- No reverse polarity protection. Incorrect power connection will cause permanent damage.
5. 5V Port Usage
- 5V output port: Strictly for external potentiometers/switches (speed/direction control).
Do NOT connect external devices.
6. M Port Specifications
- M port: Motor speed pulse output (push-pull output). Max output current: <5mA.
Diagram Without Heatsink Diagram With Heatsink
Wiring Diagram
1. Control Ports (Right Side)
● 5V: Internal output voltage (driver board).
● M: Motor speed pulse signal output (5V pulse signal).
● Z/F: Forward/reverse control port.
- Connect to 5V (high level) or leave unconnected for unidirectional rotation.
- Connect to 0V (low level) or ground for reverse rotation.
● VR: Speed control port.
- Analog voltage speed regulation: 0.1V–5V (linear adjustment).
- PWM speed control requires a common ground with the driver board.
● GND: Control circuit ground.
2. Power Ports (Left Side)
● MA, MB, MC: Three-phase motor terminals.
● GND: DC power supply negative (-).
● VCC: DC power supply positive (+).
3. Critical Notes
● Motor wires should not exceed recommended lengths. The driver relies on Back Electromotive
Force (BEMF) detection. Excessively long wires may cause signal interference.
● Control ports: 2.54mm pitch connectors.
● Power ports: 3.96mm pitch connectors.
● Insulation is mandatory when installing heat sinks or mounting the driver board (refer to insulation guidelines).
Dimensional Drawing
