Quote Originally Posted by John11668 View Post
Following on from my recent query about unwanted spindle pulsing, I will take advice from there and get a separate spindle relay.
I would like one which is robust but gives me the opportunity to vary speed so will need to provide a 0-10v signal to the VFD.
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.