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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
Electrical Performance Specifications
- Voltage Range DC 5V - 28V
- Rated Current MAX 2A (To control motors with higher current, connect the motor power line directly to the power supply, bypassing the governor)
- PWM Output Frequency 0 - 100KHz
- Analog Voltage Output 0 - 5V
- Temperature Range Working: -10°C to 70°C | Storage: -30°C to 125°C
- Driver Board Size 60mm (Length) x 40mm (Width)
Safety Precautions
Reverse Polarity Warning: The positive and negative power supply connections of the governor must be wired strictly in accordance with the instructions. Reversed connection will damage and burn out the governor.
Interface Match: The governor is designed to match motors with compatible control interfaces.
Voltage Limit: Do not supply more than 5V of voltage input to ports 5 through 9.
Wiring Diagram & Internal Functions
1Governor/motor positive power input.
2Governor/motor negative power input.
3Positive output of the motor power supply.
4Negative output of the motor power supply.
5High/low level output of rotation control (high level: 5V, low level: 0V). Controlled by touch switch 2 (F/R), default is high level.
6High/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.
7Analog voltage output (0 - 5V) for motors accepting analog voltage speed regulation.
8PWM1 reverse output, for speed regulation where speed is inversely proportional to duty cycle.
9PWM2 forward output, for speed regulation where speed is proportional to duty cycle.
10Motor feedback signal input.
Signal Adjustments Note: Output signal changes of interfaces 5 to 9 are adjusted using the potentiometer. For port 10, determine whether to add a jumper cap based on actual motor feedback: no jumper cap indicates a single feedback multiplier (FG), while adding the jumper cap selects 3 times the multiplier (FG*3). The same applies to CW/CCW settings.
Parameter Configuration Settings
1. Frequency Configuration
Hold down touch switch 1 before powering on. Connect power to the governor board and wait for the screen to display "FEQ:20K". Release the button. Press touch switch 1 to decrease the value or touch switch 2 to increase it. The default factory setting is 20KHz.
2. Number of Poles Configuration
Hold down both touch switch 1 and 2 before powering on. Apply power to the board and wait for the display to show "number of poles: 1 polarity" before releasing. Press touch switch 1 to decrease and touch switch 2 to increase. Configure this setting to match the designed pole count of your motor. Default is 1 pole.
3. Feedback Multiplier Settings
Set the FG/FG*3 pin according to your motor's feedback requirements. Adding a jumper cap configures the feedback multiplier to 3x (FG*3), while leaving it open selects a single feedback multiplier (FG).
4. Motor Direction Settings
Use the CW/CCW pin to determine the default startup direction of the motor when the direction control line is floating. Apply a jumper cap to set it to CCW, or leave the cap off to set it to CW.
Default Main Display Screen: Displays four real-time parameters: input voltage, motor speed, PWM frequency, and duty cycle. For correct motor speed readings, you must configure the correct pole numbers and FG/FG*3 parameters.
Frequently Asked Questions (FAQ)
What happens if I connect the positive and negative power inputs backwards?
The positive and negative power inputs must be wired exactly as specified. If reversed, the governor will not function and internal circuitry will burn out.
How can I control a motor that requires more than the rated 2A current?
For motors requiring larger currents than 2A, the motor power line must be connected directly to your power supply rather than running through the governor circuitry.
How do I reset or change the output frequency of the governor?
Before powering the unit on, hold down touch switch 1. Turn on the power, wait for the screen to read "FEQ:20K", and release the button. You can then use touch switch 1 to decrease and touch switch 2 to increase the frequency setting. The default value is 20KHz.
What is the purpose of the FG/FG*3 jumper cap?
This jumper setting configures the feedback multiplier of the motor. Leaving the jumper cap off configures a single feedback (FG), while adding the jumper cap sets it to a triple feedback multiplier (FG*3).
Why is my motor speed displaying incorrectly on the screen?
To ensure the screen displays the correct speed, you must configure both the correct feedback multiplier (FG/FG*3 jumper cap) and the matching pole count setting designed for your specific motor.
What voltage range can the control input ports accept?
The signal control ports (including the F/R, BRA, analog, and PWM outputs) cannot handle input signals or voltage values exceeding 5V. Higher voltages can damage the governor.
