When the electric vehicle controller brushless controller did not output a) referring to the main phase brushless motor controller check the measurement chart surge plates sx440 production, with a multimeter DC voltage + 50V stalls, 6-channel MOS transistor to detect whether the gate voltage was transferred to the corresponding relationship between the rotation angle. 2) If there is no right, indicating that the controller in the PWM circuit or MOS tube drive circuit failure. 3) the main phase brushless controller reference checks, and whether or voltage measurement chip input and output pins and turn the rotation angle has a corresponding relationship, you can determine which chip is faulty, replace the same model chip can troubleshoot. Controller PID control and its controller or intelligent PID controller (meter) has a lot of products have been in engineering practice is widely used SX440, there are a variety of PID controllers Dongguan generator SX440, major companies have developed a self-tuning PID parameters enabled smart regulator (intelligent regulator) SX440 generator manufacturers, which automatically adjusts the PID controller parameters are adjusted or self-correction through intelligent, adaptive algorithm. There PID control achieved by pressure, temperature, flow, level controller, PID control function enables the programmable controller (PLC), as well as to achieve PC system with PID control and so on. Programmable Logic Controller (PLC) is the use of closed-loop control module to achieve PID control, and programmable controllers can be connected directly to the ControlNet, PID control function can be achieved as well as a controller. SX440 suppliers, faithful electromechanical (certified), SX440 provided by the Dongguan City, South City Zhongxin Electrical and Mechanical Services Department. Dongguan City, South City Zhongxin Electrical and Mechanical Services Department (zhongxin888.net.cn) is Dongguan, industrial products leader, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Electromechanical faithful leadership in the staff warmly welcome all inquiries negotiations to create a better future for electromechanical faithful.