Quote Originally Posted by m_c View Post
If you're worried about not switching something back on, for the interlock, use a switch with an extra contact, or wire in an extra relay, and have it connected to an additional input, then set up the controller to prevent it from restarting until it sees the additional input, and flagging up if the interlock isn't closed.
Isn't that just the same has what I said in post #5.?