Messages

1

Generic Spindle interfaces, I/O boards, Misc boards and panels / Re: PMDX 107, PMDX 126, ESS, PWM signal blip

« on: August 12, 2016, 01:32:41 PM »

Hi Bob,

Thanks for looking into this for me. I have attached pics of the 126 and 107 dip switch positions and my mach 3 xml

2

Generic Spindle interfaces, I/O boards, Misc boards and panels / PMDX 107, PMDX 126, ESS, PWM signal blip

« on: August 09, 2016, 03:28:21 PM »

Every now and then my spindle cuts out for a split second then resumes. This is only occurring once an hour but there is not pattern or regularity to it.  I noticed that the PWM led on the PMDX 107 board dims when the spindle cuts and so I believe that the PWM signal is the cause. I'm not sure where it originates, my ESS is mounted to and connected to the PMDX 126 with the short ribbon cable so I think it's unlikely to be electrical noise.  I did change the switch 5 of the 107 board which slows the respond to the PWM input, this did change the nature of the cutouts from being a quick slowdown and acceleration to a slower deceleration and speed up.  Can anyone help with this or suggest a way of diagnosing where the PWM signal may be slipping?