Good evening all,
I have just completed building a 1300mm X 900mm router table with rack and pinion gantry drive design. I am very happy with the operation of the table and have had great success with the accuracy of it but I am now faced with this frustrating problem.
Subsequent to the initial design I have connected 5 limit/ home switches all wired in series and connected to pin 10 on the breakout board. Also a dedicated Emergency stop switch to pin 12 on the breakout board. Both work exactly as expected, however as soon as I start the spindle motor, it triggers a limit switch activation and the machine stops. If I reset it, the machine will run for about another 10 seconds or so before doing the same. On the diagnostic page, all five limit switch LED's illuminate for about half a second each time the interference occurs. The spindle is a Chinese HY brand 1.5 kw unit and it appears to operate without any issues very smoothly. The spindle is totally electrically isolated from the breakout board. I.e. control is only achieved through the operation of the touch panel on the front of the VFD.
This is what I have tried so far to overcome the problem:
All wiring to the stepper motors, limit switches and spindle motor has been replaced with shielded wire and all shielding taken to a common ground.
The spindle carrier frequency has been changed throughout its entire range with no change.
The config debounce has been set to a figure of up to 2000 ms with no change.
Short of pulling what little hair I have left out, I am stumped with how to fix this.
Any help appreciated
Stuart