: electric valve: electric control valve (can control the opening degree. Can continuously adjust the valve) and electric valve (only control the switch but not the opening degree), exchange generally 3 wires, live wire, neutral wire, ground wire. Solenoid valve: Smart switch valve cannot control the opening. Power on, turn off and reset automatically when power off. Electric control valve wiring: 2 power supply, 2 opening control, 2 opening feedback, a total of six. Electric valve wiring: open and close control 3 (1 open, 1 closed, 1 common end), 3 open and closed (1 open end, 1 closed end, 1 common end), total 6 wires. The open end and closed end are passive contacts. Wiring diagram of electric valve for air-conditioning cooling tower and chiller (the electric valve cannot adjust the opening). Wiring diagram of electric control valve for water collector and water separator of air-conditioning chiller (voltage 220V 4~20mA) Electric butterfly valve: Electric butterfly valve has ordinary and intelligent types. Ordinary type, when the motor is switched on, the valve will open or close, depending on the motor's forward or reverse rotation; intelligent type such as AC380V, after supplying AC380V, the motor will not move and the internal control circuit board can work. When inputting 4-20mA current to it, do the corresponding action. Close at 4mA, open at 20mA. And there is a 4-20mA analog feedback signal to reflect its valve opening size. The electric butterfly valve is composed of an electric actuator and a butterfly valve. The electric actuator rotates at 90 degrees and has two control modes: on-off and regulating. The rotation of the electric actuator drives the opening and closing of the butterfly valve. With manual operation function, the butterfly valve can be switched on and off manually when the power is off. Common electric butterfly valve wiring diagram: as follows: the switch type has a source light to indicate the electric butterfly valve wiring diagram, there are 5 wirings, 1, 2, 3 are the control part, 1, 4, and 5 are the feedback part. Switch type with passive contact type feedback electric butterfly valve wiring diagram, 1, 2, 3 is the control part wiring, 4, 5, 6 are passive contact feedback. Wiring diagram of switch type electric butterfly valve with opening signal feedback. 1, 2, 3 is the control wiring part, 4, 5, 6 are the feedback part, the output resistance value of 0-5K can be selected. AC380V three-phase power supply electric butterfly valve wiring diagram: intelligent adjustable electric butterfly valve wiring diagram, input and output 4-20mA:
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