Re: Dynomotion
Sorry for jumping in here but there seems to be a bit of confusion about my suggested E-stop/control power wiring.
I always use opto-relays between the controller and the world. I power the output side of the opto-relays from the E-stop relay, that way, when the E-stop relay is de-energized, it cuts all power to the outputs as required..
In the following example, I am showing OP1 as the controller E-stop permissive, and thus it is wired outside of the E-stop circuit. This permissive allows the controller to initiate an E-stop on some kind of fault condition, also would not allow the E-stop circuit to be energized until controller is happy.
All of this assumes that the operator has powered up the computer and the system is booted up and ready for action.
Jim Dawson
Sandy, Oregon, USA