JUYI Analog Voltage Speed Controller 50V DC 15A Easy-lnstall Motor Driver

Application Notes:

1. Confirm the voltage and power parameters of the motor, which must not exceed the range specified by the drive board.

2. The JYQD_V8.5E is a dedicated drive board for brushless DC motors without hall sensors. However, not all three-phase

motors can be directly used with it.If the driving effect is suboptimal (e.g., startup jitter, reverse rotation, excessive current

at high speed, unstable speed, reduced efficiency, or failure to start normally under load), customers can adjust the parameters

of individual components on the drive board according to actual conditions to achieve the best driving effect.

3. The JYQD_V8.5E drive board is a bare board. For motors driven below 60W, forced cooling is not required—only normal

ventilation is needed. If the motor power exceeds 60W, forced cooling is mandatory, and a heat sink must be added (pay

attention to insulation; see the installation method below).

4. The JYQD_V8.5E drive board has no reverse polarity protection. Connecting the power supply in reverse will cause permanent

damage to the board (please pay special attention during application).

5. The 5V output port on the drive board is strictly prohibited from connecting external electrical devices. It is only suitable for

connecting potentiometers or switches on the board for speed regulation and direction change.

6. The M terminal on the JYQD_V8.5E drive board is the motor speed pulse output signal (push-pull output), with a maximum

output current of less than 5mA.

Wiring Diagram:

1. Control Ports (Right)
   • 5V — Internal output voltage of the drive board
   • M — Motor speed pulse signal output port, 5V pulse signal.
   • Z/F — Forward/reverse control port. Connect to 5V high level (or leave unconnected) for one-direction rotation; connect to 0V low level (or ground) for the opposite direction.
   • VR — Speed control port. Analog voltage speed regulation (0.1V-5V for speed regulation, linear adjustment from low to high). PWM speed control requires a shared ground with the drive board.
   • GND — Ground for internal control of the drive board.
2. Power Ports (Left)
   • MA — One of the motor's three-phase wires
   • MB — One of the motor's three-phase wires
   • MC — One of the motor's three-phase wires
   • P- — DC power supply negative pole (-)
   • P+ — DC power supply positive pole (+)
3. Note: Motor wires should not be too long, as the drive board relies on back EMF detection. Excessively long wires may cause signal interference issues.
4. Control ports use a 2.54mm pitch, while power ports use a 3.96mm pitch.
5. When adding a heat sink or installing the board, ensure proper insulation to avoid electrical hazards.

​

Dimension Diagram:

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!

Contact us: