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DC BLDC Motor LCD Speed Controller PWM Controller 12V 24V Adjustable PWM Motor Speed Regulator 12V 24V
Product Description
Electrical Performance Specifications of Governor
Voltage Range
DC 5V - 28V
Rated Current
MAX 2A
To control motors with higher current, connect motor power lines directly to the power supply, bypassing the governor.
PWM Output Frequency
0 - 100 KHz
Analog Voltage Output
0 - 5V
Working Temperature
-10°C to 70°C
Storage Temperature
-30°C to 125°C
Driver Board Size
60mm x 40mm
Wiring and Internal Function Description
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1Power Positive In: Governor and motor power supply positive input.
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2Power Negative In: Governor and motor power input negative.
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3Motor Positive Out: The positive output of the power supply of the motor.
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4Motor Negative Out: Negative output of the power supply of the motor.
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5F/R Control Output: 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.
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6Brake Control Output: High and low level output of brake control. High level: 5V, Low level: 0V. Controlled by touch switch 1 (BRA), default is high level on power-up.
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7Analog Voltage Output: 0 to 5V output. This interface is suitable for accepting analog voltage speed regulation motors.
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8PWM1 Reverse Output: Suitable for motors that accept PWM speed regulation where speed is inversely proportional to the duty cycle.
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9PWM2 Forward Output: Suitable for motors that accept PWM speed regulation where speed is proportional to the duty cycle.
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10Feedback Input: Motor feedback signal input.
Signal Adjustments (5 - 9): The output signal changes of these three interfaces are adjusted by the potentiometer.
Note: The FG/FG*3 jumper cap setting should match the actual motor feedback frequency. Without a jumper cap is single-times feedback (FG); adding a jumper cap results in 3-times feedback (FG*3). The same setting rule applies to the CW/CCW jumper configurations.
Note: The FG/FG*3 jumper cap setting should match the actual motor feedback frequency. Without a jumper cap is single-times feedback (FG); adding a jumper cap results in 3-times feedback (FG*3). The same setting rule applies to the CW/CCW jumper configurations.
Governor Parameter Settings
1. Frequency Setting
Press and hold touch switch 1 before powering on, then power the board. Release the button when "FEQ:20K" appears. Press switch 1 to decrease, and switch 2 to increase. The factory default setting is 20KHz.
2. Number of Poles Setting
Press and hold both touch switch 1 and touch switch 2 simultaneously before powering on, then power the board. Release when the screen displays the number of poles menu. Press switch 1 to decrease, and switch 2 to increase. The factory default is 1 pole.
3. Feedback Setting
The FG/FG*3 pin is used to set the feedback multiplier. If your motor requires 3-times feedback, place a jumper cap on the pin. Keep the jumper cap off for single-times feedback (FG).
4. Direction Setting
Use the CW/CCW pin to determine the initial start direction. Set this configuration based on whether the motor runs CW or CCW when the control line is suspended. Add a jumper cap for CCW, and remove it for CW.
Main Interface: The active screen displays four main parameters: input voltage, speed, frequency, and duty cycle. Speed requires correct configurations of FG/FG*3 and the pole count to display properly.
Important Safety Precautions
- Correct Wiring: The positive and negative power inputs must be wired exactly according to the instructions. Reversing the polarity will damage and burn out the governor circuit.
- Motor Compatibility: Ensure the governor is only used with motors that match the control interface specifications described above.
- Voltage Limit: Ports 5 through 9 must never be exposed to voltages higher than 5V.
Frequently Asked Questions (FAQ)
What is the input voltage range of this motor speed governor?
The governor operates on a DC voltage range of 5V to 28V. Ensure your power supply falls within this limit to prevent damage.
Can I use this governor to control a motor that draws more than 2A of current?
Yes, but the motor power line must be connected directly to the power supply rather than routed through the governor, as the board's onboard rated current limit is 2A.
How do I adjust the PWM frequency output?
Before powering the board, press and hold touch switch 1. Turn on the power, and release the button once the screen shows "FEQ:20K". You can then use touch switch 1 to decrease and touch switch 2 to increase the frequency.
What happens if the positive and negative power terminals are reversed?
Reversing the polarity of the positive and negative power connections will render the governor inoperable and will permanently burn out the device's internal components.
How does the FG/FG*3 jumper cap setting affect motor feedback?
The jumper cap configures the feedback multiplier. Operating without a jumper cap outputs a single feedback rate (FG), while adding the jumper cap multiplies the feedback signal by 3 (FG*3).
What is the voltage limit for control ports 5 through 9?
Ports 5 (F/R), 6 (BRA), 7 (Analog Output), 8 (PWM1), and 9 (PWM2) cannot accept or be subjected to input voltages exceeding 5V.
