Q508 three-phase DC brushless motor drive control board
Q508 three-phase DC brushless motor drive control board
This product is a motor drive controller used for high-speed polishing machines. It is driven by a Hall free speed servo method. The main control chip optimizes the control logic of the motor and achieves actual speed compensation. In addition, the biggest feature is that the servo speed can be adjusted to meet different speed needs of customers.
1、 Features and features:
Low voltage protection
Adjustable speed servo control
FG speed output
Forward and reverse functions
EN start/stop
No Hall Sensing Brushless Motor Control IC
Locked rotor protection
Overcurrent protection function
Strong anti-interference and electrostatic ESD
Wide working temperature range: -25 ℃~85 ℃
System working voltage/current: 20V~28V, 10A
2、 Function Description of Control Board Pins
引脚名称 | 功能描述 |
VDD | 额外提供5V/0.5A电源供外部界面使用 |
F/R | 正/反转输入，当F/R为高电平时为正转，输入为低电平时为反转 |
FG | 转速信号输出 |
EN | 启动/停止关闭，当EN输入为低电平时，控制板动作电机运转，当EN输入为高电平时，控制板不动作电机停止 |
GND | 控制板电池地线及控制信号地线 |
VCC | 控制板正直流电源输入脚 |
VR | 伺服转速调整，利用此可调旋钮进行调速 |
3、 Control Board Function Description
1. Low voltage protection detection (VP)
When the power supply voltage is lower than the set low voltage protection value of 20V on the control board, it is judged as a low voltage condition. The IC receives this signal and closes all outputs to stop the motor from running. However, if the power supply voltage is greater than the low voltage protection value of 20V, it must be re powered on to resolve this anomaly.
2. Overcurrent detection (DC)
When the working current of the motor is less than the overcurrent protection value set by the control board, the motor operates normally and the OC pin of the IC is at a low level. When the working current of the motor is greater than the set overcurrent protection value, the IC and OC pins are at a high level. Upon receiving this signal, the IC closes all outputs, causing the motor to stop running. The way to release the protection state is to manually release the state, and the power off → power on must be restarted.
3. Locked rotor protection
When the IC detects that the motor switch signal is incorrect, it is judged as a locked rotor condition and outputs a signal to shut down the motor operation to stop it. The release method is to manually release the condition, and it must be Power off → Power on again.