Quote Originally Posted by malcolmd View Post
yes but i disabled it to see if it made any difference but it didnt. im thinking about changing my breakout board to a UC300 from a HG08, could it be a faulty circuit?? i dont know
Hi and welcome to the forum. I am sorry but we don't have a crystal ball. Can you give more information about the router. Under what circumstances does it Estop? It is no use just stabbing in the dark. Is the machine frame earthed?

Does it estop when the spindle is not running ie with the VFD off etc.