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DC Motor Speed Controller DC 12V 24V DC Brushless Motor Speed Controller With Forward-Brake-Reverse Switch Ajustable Display
Product Description
1. Electrical Performance Specifications
Power & Voltage
- ✓ Voltage Range: DC 5V - 28V
- ✓ Rated Current: MAX 2A. To control the motor with greater current, connect the motor power line directly to the power supply, not through the governor.
Signals & Physical
- ✓ PWM Output Frequency: 0 - 100KHz
- ✓ Analog Voltage Output: 0 - 5V
- ✓ Driver Board Size: 60mm (L) x 40mm (W)
Temperature Range
- ✓ Working Temperature: -10°C to 70°C
- ✓ Storage Temperature: -30°C to 125°C
2. Governor Wiring & Internal Functions
- 1 Governor / Motor Power Positive Input: Connect to positive power terminal.
- 2 Governor / Motor Power Negative Input: Connect to negative power terminal.
- 3 Power Positive Output: The positive output of the power supply to the motor.
- 4 Power Negative Output: The negative output of the power supply to the motor.
- 5 Rotation Control Output: High and low level output of positive/negative rotation control (High: 5V, Low: 0V). Controlled by touch switch 2 (F/R). Default setting is high level.
- 6 Brake Control Output: High and low level output of brake control (High: 5V, Low: 0V). Controlled by touch switch 1 (BRA). Default setting on power-on is high level.
- 7 Analog Voltage Output: Range 0 - 5V. This interface is suitable for speed regulation on motors accepting analog voltage.
- 8 PWM1 Reverse Output: Suitable for motors accepting PWM speed regulation; speed is inversely proportional to the duty cycle.
- 9 PWM2 Forward Output: Suitable for motors accepting PWM speed regulation; speed is proportional to the duty cycle.
- 10 Motor Feedback Signal Input: FG/FG*3. Set based on actual motor feedback times using a jumper cap. Without the jumper cap represents single times FG; adding the jumper cap changes it to 3 times FG*3. The same rule applies to CW/CCW direction pins.
Adjustment Note: The output signal variations for interfaces 5 through 9 are adjusted using the onboard potentiometer.
3. Parameter Settings Guide
Frequency Setting
Press and hold touch switch 1 before powering on. Power the governor board and wait until the screen displays "FEQ:20K". Release the button, then touch switch 1 to decrease, or touch switch 2 to increase. The factory default is 20KHz.
Number of Poles
Before powering on, press and hold both touch switch 1 and 2. Power on the board and wait until the screen displays "number of poles: 1 polarity" before releasing. Touch switch 1 to decrease and switch 2 to increase. Set it to your motor's designed pole count (factory default: 1 pole).
Feedback & Direction
Feedback: Set the FG/FG*3 pin jumper cap according to your motor multiplier requirements. Adding the jumper cap sets it to 3x FG; leaving it open sets it to single FG.
Direction: The CW/CCW pin configures the initial state. Add the jumper cap for CCW, or leave it off for CW when the direction control line is suspended.
Main Screen Display Info: The active display screen shows four primary values: Input Voltage, Speed, Frequency, and Duty Cycle. For correct speed readings, the feedback (FG/FG*3) and the pole count must be configured properly.
Important Precautions
- ⚠ Correct Wiring is Critical: The positive and negative power supplies of the governor must be connected exactly as instructed. Reversing the polarity will burn out the governor and prevent operation.
- ⚠ Compatibility: The governor is designed specifically to match motors that utilize the control interfaces described above.
- ⚠ Voltage Limit: Do not supply a voltage higher than 5V to the five control ports (interfaces 5, 6, 7, 8, and 9).
Frequently Asked Questions
What is the voltage and current limit of the governor?
The governor supports a voltage range of DC 5V-28V with a rated maximum current of 2A. If you need to control a motor requiring higher current, the motor power line must be connected directly to the power supply instead of going through the governor.
How do I change the PWM frequency on the governor?
Hold down touch switch 1 before powering on the board. Once the screen shows "FEQ:20K", release the button. You can then use touch switch 1 to decrease the frequency or touch switch 2 to increase it. The default factory setting is 20KHz.
How do I configure the motor's pole settings on the board?
Hold down both touch switch 1 and touch switch 2 simultaneously, then power on the governor board. Wait for the screen to show "number of poles: 1 polarity" before releasing. Adjust the poles using touch switch 1 (decrease) and touch switch 2 (increase) to match your motor specifications.
What is the purpose of the FG/FG*3 jumper cap?
It configures the feedback multiplier of the motor. Leaving the jumper cap off selects a single FG feedback value. Adding the jumper cap sets the feedback to 3 times FG (FG*3), which is essential for accurate motor speed readings on the display.
What happens if the positive and negative power connections are reversed?
The power supplies must be connected accurately according to the instructions. If the polarity is reversed, the governor will not function and will suffer irreversible burn damage.
Are there voltage restrictions on the control ports?
Yes, the five control ports (pins 5 to 9, representing rotation control, brake control, analog voltage, and PWM outputs) are designed to handle signals up to 5V. Exceeding 5V on these ports can damage the board.
