My equipment consist of Grizzly 6x26 knee mill that was converted to CNC several years ago using Mach3 with 3 Nema 34 3.5 amp motors controlled by Gecko G540 running on a 48 volt transformer. Everything was working for years sometimes hours at a time cutting complex parts.
Lately it has started acting up on me and by that I mean it will be moving along and all of a sudden it stops randomly, at least one of the motors stops turning.
I can continue to jog but I have lost position and I have to start over. Things I have checked:
Gibs readjusted and both X and Y slide freely, I thought it might be binding up but it never stops at the same place
Installed all new shielded motor cables with a 3.5K resistor on each connector
New shielded cable on each of the Home switches
Operating on Windows7 with nothing else that I know of running, screen savers etc.
Running at 25000 htz
Motors tuned for a conservative speed, Velocity of 30 and Acceleration of 5 but nothing that I change seems to make a difference.
It seems like it is getting a stray signal from somewhere that's causing a momentary hiccup that's driving me crazy.
I am stumped and don't know what else to change or look for
I am open to any and all ideas
Thanks
Jack