Quote Originally Posted by ngwagwa View Post
FWIW I would just put a switch in the 240V feed to the VFD.
That's not a good idea VFD's don't like being switched off/on like this plus they have to discharge their capacitors so if the outputs to motors are not disabled, which they won't be just switching off while running then it will continue running until caps are drained which isn't safe.

It's simple to do Like Muzzer says. It's a simple latching setup.