Quote Originally Posted by JAZZCNC View Post
Hi John, Maybe you misunderstood when I said I use a better quality relay.? It's only for the Stop/Start and not the 0-10V speed reference voltage.
You don't need the speed reference going through the relay as it's only telling the VFD how fast to spin, it's the Start/stop signal that pulses it on off.

Finder or Omron are both decent relays.
Presuming the BoB relay is up to the task of starting the VFD , then where do I take my 0-10v signal from ?
Does UCCNC facilitate that?