JUYI
JUYI Compact JYQD-V6.7 Controller Dual-Mode Speed Regulation Pulse Output for BLDC Motors
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JUYI Compact JYQD-V6.7 Controller Dual-Mode Speed Regulation Pulse Output for BLDC Motors
Application Notes:
1. Motor Compatibility
- Confirm the motor’s voltage and power ratings do not exceed the driver board’s specified limits.
2. Sensorless BLDC Motor Compatibility
- Designed for sensorless 3-phase BLDC motors, but not all such motors are plug-and-play.
- If issues arise (e.g., startup jitter, reverse rotation, high current, unstable speed, or load failure),
adjust resistor/capacitor parameters to optimize performance.
3. Thermal Requirements
- No forced cooling needed for motors ≤36W (ensure adequate ventilation).
- For motors >36W, implement active cooling solutions.
4. 5V Port Usage
- 5V output port: Strictly for external potentiometers/switches (speed/direction control).
Do NOT connect other devices.
5. SC Port Specifications
- SC port: Motor speed pulse output signal. Max output current: <5mA.
Wiring Diagram
1. Control Ports (Left)
• 5V: Internal 5V output for potentiometer power supply only (used for speed switching & direction control)
• Z/F: Forward/reverse control port
- Rotates in one direction when connected to 5V (high level) or left open
- Rotates in opposite direction when connected to 0V (low level) or grounded
• VR: Speed control port (analog voltage 0.1V-5V, linear speed regulation from low to high)
• PWM: Requires shared ground with driver board for PWM speed control
• SC: Motor speed pulse signal output (5V pulse signal)
• GND: Control system ground
2. Power Ports (Right)
• VCC: DC power positive (+)
• GND: DC power negative (-)
• MA/MB/MC: Three-phase motor terminals
3. Critical Notes
a) Motor wire length should not exceed 50cm. Extended wiring may cause:
- Signal interference (due to back-EMF detection mechanism)
- Reduced phase current detection accuracy
b) Connector specifications:
- Control ports: 2.54mm pitch
- Power ports: 2.54mm pitch
c) Thermal management:
When adding or installing a heat sink, pay attention to the insulation of the drive board.
Dimensional Drawing
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