BLDC DC 5-36v Brushless Sensorless Motor Control Board Driver

Product Description

Governor Wiring and Board Layout
Electrical Performance Specifications
Voltage Range
DC 5V - 28V
Rated Current
MAX 2A *
PWM Output Frequency
0 - 100KHz
Analog Voltage Output
0 - 5V
Operating Temperature
-10°C to 70°C
Storage Temperature
-30°C to 125°C
* Note: To control the motor with greater current, the motor power line must be directly connected to the power supply and not routed through the governor.
Driver Board Size: 60mm (L) x 40mm (W)
Governor Wiring & Internal Functions
  • 1
    Governor & motor power supply positive input.
  • 2
    Governor & motor power input negative.
  • 3
    Positive output of the power supply of the motor.
  • 4
    Negative output of the power supply of the motor.
  • 5
    High and low level output of positive and negative rotation control. High level: 5V, Low level: 0V. Controlled by touch switch 2 (F/R), default is high level.
  • 6
    High and low level output of brake control. High level: 5V, Low level: 0V. Controlled by touch switch 1 (BRA), power-on default is high level.
  • 7
    Analog voltage output (0~5V). Suitable for motors accepting analog voltage speed regulation.
  • 8
    PWM1 reverse output. Suitable for motors accepting PWM speed regulation where speed is inversely proportional to the duty cycle.
  • 9
    PWM2 forward output. Suitable for motors accepting PWM speed regulation where speed is proportional to the duty cycle.
  • 10
    Motor feedback signal input.
Signal Adjustment (5 to 9): The output signal changes of these three interfaces are adjusted via the potentiometer.

Feedback Configuration (FG/FG*3): Configured via jumper cap based on actual motor feedback. No jumper cap = single times FG. With jumper cap = 3 times FG*3. The same application logic applies to CW/CCW direction configurations.
Parameter Settings
1. Frequency Setting
Press and hold touch switch 1 before powering on. Power the governor board and wait for the screen to display "FEQ:20K" before releasing the button. Touch switch 1 to decrease and touch switch 2 to increase the frequency. (Factory default is 20KHz).
2. Number of Poles Setting
Hold down both touch switch 1 and touch switch 2 simultaneously before powering on. Power the governor board and wait for the screen to show "number of poles: 1 polarity" before releasing the buttons. Touch switch 1 to decrease and touch switch 2 to increase. (Factory default is 1 pole).
3. Feedback Setting
The FG/FG*3 pin is used to set the feedback multiplier according to your motor. Adding a jumper cap sets the feedback to 3 times FG, while leaving it off defaults to single times FG.
4. Initial Direction Setting
The CW/CCW pin configures the initial start state of the motor when the direction control line is suspended. Add a jumper cap for CCW (Counter-Clockwise) or leave it off for CW (Clockwise).
Main Screen Display: Displays input voltage, speed, frequency, and duty cycle. The speed display relies on correct settings for FG/FG*3 and the number of motor poles.
Safety Precautions
⚠️ The positive and negative power connections of the governor must be wired strictly in accordance with the specifications. Reversing the polarity will damage or burn out the controller.
⚠️ The governor must only be matched with motors that feature the compatible control interfaces detailed above.
⚠️ The five control ports (5 to 9) must not exceed an input voltage threshold of 5V.
Frequently Asked Questions
What is the compatible voltage and current range for this governor?
The governor operates on a DC voltage range of 5V to 28V. The maximum rated current is 2A. If you require control of a motor with higher current, bypass the governor by connecting the motor power line directly to the power supply.
How do I adjust the PWM frequency settings?
Before powering on, press and hold touch switch 1. Power up the board, and release the button once the screen displays "FEQ:20K". You can then use touch switch 1 to decrease and touch switch 2 to increase to your target frequency.
What is the difference between having the FG/FG*3 jumper cap on or off?
The jumper cap configures the feedback multiplier. Leaving the jumper cap off configures the system for single times FG feedback, while adding the jumper cap changes the feedback setting to 3 times FG*3.
What happens if I reverse the positive and negative power inputs?
Reversing the positive and negative power supply lines will cause permanent damage to the governor circuit. Always ensure polarities match the provided wiring instructions exactly.
Can I input a control voltage higher than 5V into the signal ports?
No, the control ports (interfaces 5 through 9) are rated for low voltage signals. Do not connect or feed a voltage greater than 5V into these ports to prevent terminal damage.
How does the initial direction setting (CW/CCW) function?
The initial direction is set using the CW/CCW pin layout. With no jumper cap installed, the motor defaults to Clockwise (CW) rotation when the control line is suspended. Adding the jumper cap switches the default startup direction to Counter-Clockwise (CCW).

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