Quote Originally Posted by Radu_Andrei View Post
Hi.


The only thing that it is clear is that the relay clicking started after setting the pwm spindle speed control, but not at that exact time, a few days later.

Like many other times in the past, I do not know what to do.
One thing can say on this is: Don't turn on any of your control systems until you have Mach started up and in control. This prevents any of the ancillary components like spindle and cooling firing up on booting of the PC.