How to control the valve switch of an electric actuator

The electric valve  actuator  is generally controlled by a 220V AC power supply (not excluding the Actuator with low-voltage DC voltage control) The opening and closing are respectively given a continuous signal, that is, the relay is in a continuous engagement state after the opening or closing signal is given, and the electric valve is generally composed of two sets of limit switches, 220V single-phase motors and capacitors. The specific connection method is shown in the figure above, but it should be noted that the wiring of the terminal block and the external control cabinet needs to be corresponded one by one.

Terminal 1: The lower end is connected to the forward coil of the motor, one end of the capacitor, and the open limit switch

Terminal 2: The lower end is connected to the motor reversal coil, one end of the capacitor, and the closed limit switch

Terminal 3: The lower end is connected to the common end of the motor

Terminal 4: The lower end is connected to the limit switch with the torque open (when the open limit switch fails, the overtorque limit switch is used as protection)

Terminal 5: The lower end is connected to the limit switch with the torque off (when the limit switch fails, the limit switch is used as protection)

Terminal 6: The lower end is connected to the opening limit switch

Terminal 7: The lower end is connected to the open limit switch (the normally closed point of the open limit switch is connected to the No. 1 terminal, and the normally open point is connected to the No. 6 terminal)

Terminal 8: The lower end is connected to the limit switch (the normally closed point of the limit switch is connected to the No. 2 terminal, and the normally open point is connected to the feedback of closing in place)

Terminal 9: Connect to the live wire

Terminal 10: Electric Actuator closes in place for feedback

Terminal 11: Electric actuator  open in place feedback