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DC Motor Speed Controller DC 12V 24V DC Brushless Motor Speed Controller With Forward-Brake-Reverse Switch Ajustable Display
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DC Motor Speed Controller DC 12V 24V DC Brushless Motor Speed Controller With Forward-Brake-Reverse Switch Ajustable Display
1. Electrical Performance Specifications of Governor
Voltage Range
DC 5V - 28V
Rated Current
MAX 2A
To control a motor with greater current, the motor power line must be directly connected to the power supply instead of passing through the governor.
PWM Output Frequency
0 - 100KHz
Analog Voltage Output
0 - 5V
Working Temperature
-10°C to 70°C
Storage Temperature
-30°C to 125°C
Driver Board Size
60mm (L) x 40mm (W)
2. Governor Wiring and Internal Function Description
1
Governor, motor power supply positive input.
2
Governor, motor power input negative.
3
The 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). This interface is suitable for accepting analog voltage speed regulation motor.
8
PWM1 reverse output. This interface is suitable for motors that accept PWM speed regulation; speed is inversely proportional to the duty cycle.
9
PWM2 forward output. This interface is suitable for motors that accept PWM speed regulation; speed is proportional to the duty cycle.
10
Motor feedback signal input.
Control & Feedback Notes:
The output signal changes of the three interfaces (7 to 9) are adjusted by the potentiometer.
FG/FG*3 Jumper Setting: Configure according to the actual motor feedback times. Without a jumper cap, it operates as a single times FG feedback. With a jumper cap installed, the feedback is tripled (3 times FG*3).
CW/CCW Direction Settings: Configure the motor direction in its initial state based on whether the motor runs CW or CCW when the direction control line is suspended. Add a jumper cap for CCW; leave without a jumper cap for CW.
3. Governor Parameter Settings & Interface
(1) Frequency Setting
Before power-on, press and hold touch switch 1. Power the governor board and wait until the screen displays "FEQ:20K" before releasing the button. Touch switch 1 to reduce or touch switch 2 to increase. Adjust to the desired frequency (factory default: 20KHz).
(2) Number of Poles Setting
Before power-on, press and hold both touch switch 1 and touch switch 2. Power the governor board and wait until the screen displays "number of poles: 1 polarity" before releasing. Touch switch 1 to decrease and touch switch 2 to increase. Adjust to match the designed motor pole count (factory default: 1 pole).
(3) Feedback Setting
The FG/FG*3 pin is used to set the feedback multiplier. Configured based on whether the motor's feedback is single times FG or three times FG. Adding the jumper cap sets it to 3 times FG, while leaving the jumper cap off sets it to single times FG.
(4) Direction Setting
The CW/CCW pin configures the initial startup direction of the motor. Adjust this according to whether the motor defaults to CW or CCW when the direction control line is suspended. Add a jumper cap for CCW; leave it off for CW.
Main Screen Display: The primary interface screen displays four key parameters: input voltage, speed, frequency, and duty cycle. The motor speed reading requires a correct configuration of the FG/FG*3 feedback multiple and the number of motor poles to display accurately.
4. Governor Precautions
Important Safety Guidelines
Wiring Warning: The positive and negative power connections of the governor must be connected strictly according to the wiring diagram. Never reverse the polarity, otherwise, the governor will fail to work and permanently damage or burn the board.
Compatibility: This governor is specifically designed to match and control motors that feature compatible control interfaces as described.
Voltage Limit: The five control ports (from ⑤ to ⑨) must not access a voltage exceeding 5V.
Frequently Asked Questions
Q1: What is the operating voltage range and maximum rated current for this governor?
A1: The governor operates within a DC 5V-28V voltage range and handles a rated current of up to 2A. For higher current motor control, the power line must bypass the governor and connect directly to the power supply.
Q2: How do I change the PWM frequency setting?
A2: Hold down touch switch 1 before powering on, then turn on the power. Release the button when the screen displays "FEQ:20K". Press touch switch 1 to decrease the frequency or touch switch 2 to increase it. The factory default setting is 20KHz.
Q3: How do I adjust the number of motor poles on the device?
A3: Hold down both touch switches 1 and 2 before powering on. Once the screen shows "number of poles: 1 polarity", release the buttons. Use switch 1 to decrease the poles or switch 2 to increase them to match your motor specifications (factory default is 1 pole).
Q4: What is the purpose of the FG/FG*3 jumper cap setting?
A4: The jumper cap configures the feedback multiplier. If no jumper cap is added, the board is set to single times FG feedback. Adding the jumper cap sets the feedback to 3 times FG (FG*3) based on the motor's actual feedback specification.
Q5: What happens if the power polarity is wired in reverse?
A5: Reversing the positive and negative power supply lines is highly dangerous. It will prevent the governor from operating and will burn or destroy the governor board. Always double-check your connections.
Q6: What is the maximum voltage permitted for the control interface ports?
A6: Control ports ⑤ through ⑨ (which handle direction control, braking, analog voltage speed regulation, and PWM signals) must not be connected to a voltage source higher than 5V.
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