Re: I need a latching relay...or do I?

Mariss,

Sounds good, that should work. Why didn't I think of it, duh?

thanks,

Doug

--- In CAD_CAM_EDM_DRO@y..., mariss92705@y... wrote:
> Hi,
>
> I think you can do what you need with an ordinary relay if it has a
> spare pole. Try this:
>
> 1) Connect the spare NO pole in series with your relay coil.
> 2) Connect your foot pedal NO switch in parallel with the relay NO
> pole.
> 3) Connect the NC limit switch in series with the relay coil.
> 4) Place the whole mess across your AC line.
>
> What will happen is when the foot pedal sw closes, the relay will
> close. Its spare NO pole will close, sustaining coil current even
if
> you release the pedal. It will run the ram until it hits the NC
limit
> sw, which will break coil current because it is in series, dropping
> out the relay.
>
> Mariss
>
>
>