FrancisDoody
Senior Member
- Location
- Durham, CT
The AUX contacts on a Contactor wired to a start/Stop switch are used to hold the coil closed?
Thank you,
Fran
Thank you,
Fran
What the heck are you talking about? My written description is an exact description of what's in the attached schematic. The only difference between my drawing and yours is where the O/L contact is stuck in at. Big deal. Yours is a NEMA style drawing and mine's an IEC style drawing.coulter said:Marc -
I've not ever seen one wired like that. The attachment would be the norm that I have seen.
I thought yours showed the START/AUX ahead of the STOPmdshunk said:... The only difference between my drawing and yours is where the O/L contact is stuck in at. ...
Ahh -- I wondered where the numbers came from. I don't do much with IECmdshunk said:... Yours is a NEMA style drawing and mine's an IEC style drawing.
Uhhhh - possibly the US industry standard of putting the Stop ahead of the Start in 3/4 wire S/S circuits - or then again - possibly I have no clue:roll:mdshunk said:What the heck are you talking about? ...
Greetings all. Don Quixote de la Mancha here, on his never ending and ?guaranteed-to-be-unsuccessful? quest to rid the world of all windmills, and to eliminate forever the use of the phrases ?Normally Open? and ?Normally Closed.? Perhaps, and this may be all that there is to be hoped, I will make one convert.FrancisDoody said:The start/stop switch is a NO contact for the start button and a NC contact for the stop button.
Consider it done! :smile:charlie b said:Feel free to ignore the ravings of an old and tired knight.
I knew I could count on you, Larry. :grin:LarryFine said:Consider it done! :smile:
The "normal" state has always been the lowest mechanical energy state of any contact or device.charlie b said:...and to eliminate forever the use of the phrases “Normally Open” and “Normally Closed.”
While that is what I was taught..I have worked with drawings where "normal" was normal operating conditions and not the de-energized state.The "normal" state has always been the lowest mechanical energy state of any contact or device.
So have I. That is the reason I have, on occasion, jousted with the windmills of the "normal" terminology.don_resqcapt19 said:I have worked with drawings where "normal" was normal operating conditions and not the de-energized state.