AC Servo Controller Box design

[Mattia]

Dean, extremely helpful as always! I’ll go ruminate on this for a bit - the plan was indeed to cut power to the motor power lines only, leaving the drives and controllers on. I’m still pondering whether I want to add a hardwired (purely electrical) limit switch/e-stop circuit for the motors, or rely on the controller board to cut everything. The additional info for the. VFD is also very useful, thanks!

[JAZZCNC]

I’m still pondering whether I want to add a hardwired (purely electrical) limit switch/e-stop circuit for the motors, or rely on the controller board to cut everything.

It's a subjective thing and some will disagree but to me, an E-stop should drop power to the drives and drop the Latching circuit requiring a hard reset and not just rely on software or electronics.
Limits I don't class an emergency and more a positional error in which case the Controller can deal with those safely enough but an Emergency requires power to be dropped.