Re: E-Stop Wiring?
A complete estop circuit.
This has watchdog signal fed into bottom left hand corner, marked CPUMP
Note that the left hand side of the circuit, is 5v and is 100% isolated from the right hand side by the 5v relay.
ESTOP is just that for EMERGENCIES - remove power. Not for normal stop as the next poster points out.
An added feature to the above is an adjustable timer module to remove power a short time after estop.
The there are the issues of a Z axis sagging under its own weight, needing a spring applied break.
I was just trying to give a still fairly simple, safe way to do estop circuit. This at least handles the case of a control cable being unplugged.
There are still other issues, like the CPU detect whether this safety circuit is healthy... The list goes on.
Super X3. 3600rpm. Sheridan 6"x24" Lathe + more. Three ways to fix things: The right way, the other way, and maybe your way, which is possibly a faster wrong way.