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Part-Turn Electric Actuator Running Is Essential
- Sep 27, 2017 -

Valve is an important part of the pipeline transportation system, widely used in electric power, chemical, petroleum and metallurgical industries, the system pressure, Part-Turn Electric Actuator flow and temperature and other parameters to adjust. Electric actuator is an important device to control and drive the valve, is the valve to achieve remote control, centralized control and automatic control of an essential implementation of the components. With the development of electromechanical integration technology, Part-Turn Electric Actuator electric actuators in industrial production reflects a huge advantage. Reliable operation of the valve electric actuator is inseparable from the detection module, good performance and stable operation Reliable detection module is essential for the safe and stable operation of the valve electric actuator.

Valve electric actuator (Figure 1) mainly by the man-machine interface, Part-Turn Electric Actuator controller, electric actuator and detection module. The man-machine interface mainly includes liquid crystal display, key input and remote control input. The electric actuators mainly include digital signal processor (DSP), intelligent power module (IPM) and asynchronous motor. The detection module includes power detection, Part-Turn Electric Actuator motor detection and valve inspection.

The man-machine interface can set the operating parameters, send control signals to the controller, and display all kinds of information feedback from the device to complete the real-time monitoring of the system. The controller receives the control signal sent from the man-machine interface, Part-Turn Electric Actuator controls the operation of the electric actuator according to the control signal and realizes the feedback signal such as the position and the stroke of the valve in real time, adjusts the corresponding control instruction, and the controller can send the control command to the man- Working status and fault diagnosis signal. Part-Turn Electric Actuator Electric actuator is the main actuator, DSP receiver controller instructions, through the vector control technology to drive the asynchronous motor, the motor output shaft after the gears by dragging the valve opening and closing.

The detection module detects the working status of the power supply, Part-Turn Electric Actuator the motor and the valve respectively, and transforms the detected signals into digital signals which can be recognized by the controller. Power supply detection mainly for power phase detection, Part-Turn Electric Actuator asynchronous motor drive voltage and current detection, IPM module temperature detection. Motor detection is mainly carried out motor speed detection, motor rotor position detection, Part-Turn Electric Actuator torque detection, motor and gearbox temperature detection. Valve detection is mainly carried out valve position detection, valve stroke detection. Part-Turn Electric Actuator Power supply detection and motor detection signal feedback to the DSP for processing, the valve detection signal feedback to the controller MSP430 for processing.