E-stop circuits are generally wired with NC devices as a safety precaution. Also it conforms to the code recommendations.
You can change the logic by using all the NC safety devices in series and they would pick up a relay with a NC contact, this contact would be open in normal operation, closed on e-stop.
Al.
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CNC, Mechatronics Integration and Machine Design.
“Logic will get you from A to B. Imagination will take you everywhere.”
Albert E. |