Max Current 3A, 12V/24V Brushless DC Motor Driver PWM Control For Sensorless BLDC Motor with connector wires

Application notes:

1. Confirm that the voltage and power parameters of the motor not exceed the range of the driver board as specified.

2. This BLDC motor driver board is used for 3-phase brushless sensorless motor, but not suit for all 3-phase brushless sensorless motors directly. If the driving effect is not good (such as starting jitter, reversing, the motor noload working current is too large, the speed is not stable, the efficiency is low, and can’t start-up with load.) Customers can adjust the resistance and capacitance of the driver board according to the actual situation to achieve the best driving effect (see the attachment for how to do the adjustment)

3. JYQD-V6.7 driver board is bare board without housing and heatsink. If the power of the motor below 60W ,it does not need to add heatsink, It only needs to ensure normal ventilation and well insulation. If the power of the motor more than 36W, it must add heatsink like the diagram as below.

4. Please take note that JYQD-V6.7 driver board has no anti-reverse connection protection, it will permanently damage the driver board if reversed polarity connection.

5. The 5V output port on the driver board prohibits connect external device. It is only applicable to the external potentiometer and switch of the board for speed regulation and reversal.

6. The “SC” terminal on the JYQD-V6.7 driver board is the motor speed pulse output signal (push-pull output), and the maximum output current is less than 5mA.

Driver Board Diagram

Wiring Drawing

5V -----Driver board internal output voltage
SC ---- Motor speed pulse signal output port, 5V pulse signal.

1. Control port
Z/F---- Rotating direction control ports. Connect “5V” high level or no connect is Forward direction,
connect 0 V low level or connect to GND is reverse direction.
VR ----Speed control port. Analog voltage linear speed regulation 0.1v -5V, The input resistance is 20K Ohm ,connect with GND when input PWM speed regulation, PWM frequency:1-20KHZ; Duty cycle 0-100%
GND—Used for Drive board internal control

2. Power port
MA ----motor phase A
MB ---- motor phase B
MC---- motor phase C
GND----DC-

VCC----DC +

3. Use shielded wires if the drivers board has more than 50 cm distance from the motor, otherwise it
may lead to abnormal driving, affecting the normal use.

4. Control port distance: 2.54mm,Power port distance:2.54 mm

5. Pay attention to the insulation between the driver MOSFET and the heatsink or the installation plate.

JYQD-V6.7-English.pdf

Shanghai Juyi Electronic Technology Development Co., Ltd established in 2010, Its a high-tech enterprise specializing in research, development, production and sales of brushless motor controller products. Its headquarters and research and development base are established in international economy, finance, trade, shipping, and technology innovation Center - Shanghai.

The company has strong technical and R&D strength. It is a  participant in many military projects and has in-depth cooperation with many domestic large-scale enterprises and government departments.

From its inception, JUYI Tech has always adhered to the principle of environmental protection and energy conservation, and established the business principles of honesty and integrity, bringing together elites in the industry, combining advanced electronic technology, management methods and corporate experience at home and abroad with the actual conditions of domestic companies to provide comprehensive services for enterprises.

The solution will help companies acquire more advanced product technologies and production capabilities, so that enterprises will remain competitive in the fierce market competition and achieve rapid and steady development of the company.

The company has a reasonable structure of talents, has many technical backbones, and has more than one master's degree, bachelor's highmiddle level technical titles. In order to develop intelligent and energy-saving electromechanical automation products that are truly suitable for business needs, the company has entered into cooperation with a foreign control chip manufacturer to customize the unique DC brushless control IC of JY series to provide customers with more flexibility, intelligence and stability. A more cost-effective brushless motor control solution.
 

With the best products, best service and best reputation, JUYI Tech products has been applied in the automobile,textile, packaging, printing, laser, food, woodworking, clothing, plastics, agricultural machinery, gardens, medical, experimental, robotics, military and other mechanical equipments. and achieved brilliant results, completed the supporting services of many large-scale enterprises, and are willing to become your most reliable long-term partner in future!

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