This is why I mentioned hard wired into the E-stop.
I agree the true E-stop circuit should be a hard wired circuit, the watchdog/charge pump relay contact can be an AND'd part of the string.
This has been done for many years now on industrial systems.
If the electrical code was applied to anyones emergency stop, then ALL motion devices would have the power removed.
I know the hobbiest community does not have to conform to the electrical code, but safety relays are becoming more prevalent and soon may be the code.
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. |