thermal protected motors

[jim gage]

I have a 115/230 volt 1 phase motor and I would like to know if I can use the capped P2 lead for use in control and if the insulated lead will loose power during a thermal trip until cooled down and auto reset occurs?

 

[templdl]

I have a 115/230 volt 1 phase motor and I would like to know if I can use the capped P2 lead for use in control and if the insulated lead will loose power during a thermal trip until cooled down and auto reset occurs?

Is this a new motor? Who is the manufacturer? Have you contacted the motor manufacturer if domestic?

 

[ActionDave]

I have a 115/230 volt 1 phase motor and I would like to know if I can use the capped P2 lead for use in control and if the insulated lead will loose power during a thermal trip until cooled down and auto reset occurs?

Sounds like you are running the motor 230V and you want to use the extra thermal lead to tap off some power.

If that's true that is some out side the box ingenuity that could be made to work but is probably not worth the effort. You won't loose "power" during a thermal trip. Voltage will still be there but you won't have a complete circuit and you don't have a neutral at the motor.

 

[jim gage]

I want to stop a wire saw if this motor trips on thermal because it is responsible for saw wire tension and if this motor trips I want shut down of the main saw motor driving the wire.

 

[ActionDave]

Use a relay.

 

[Jraef]

Use a relay.

More specifically, you could use a cheap simple thermal overload relay set to trip right before the thermal protector in the motor trips (via trial and error?) even though you might not want to put the OL relay in the motor power circuit.

 

[kwired]

Use the P2 lead or even the P3 lead if you want to drive a control relay to shut down your wire saw, but not to run the saw directly.

Otherwise maybe a current sensing relay to control the saw.