Please ask for electric valve wiring diagram. .
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I accidentally saw an electric valve today. I opened the junction box and took a look. How does the circled one in the picture move? What do they all mean?
This is refreshing, a normally open and normally closed control loop, one is a common contact.
Remote control valve opening is connected to terminal 8. Remote control valve closing is connected to No. 9. Terminal 7 is their common terminal.
There is a travel switch inside the electric valve actuator, and those represent the contacts of the travel switch.
Normally closed contact, it will be disconnected to stop when it is in place or overloaded.
That is, the remote control point of the switch shares a common terminal and can be connected if remote control is required.