Hi guys,
Just working on retrofitting an old mill with Mach3 and servos/drives from Machmotion. Got everything up and running great including x/y/x axis. My problem is with my A axis which is a 400w ac servo motor on a ATC carosel. It is a 20 tool changer, so it's pretty big. Carosel is gear driven by the motor at a reduction of 8-1.
Problem is that as soon as I try any movement on that axis from Mach3, no matter how big or small, slow or fast, it will move then start shaking(rotating) back and forth. I can see the numbers on the drive going up and down, while the M3 DRO stays still. It will occasionally settle itself down then stop, but usually it will escallate (rotate further and further) in each direction untill I get a motor overload error. Sometimes instead of going back and forth, it just runs away in one direction.
I've bench tested it, and it is fine. Problem occurs when mechanically joined to the load. Advice from machmotion was to change the frequency filter parameter on the drive. This didnt really work, I was at one pt able to stop the jumping, but then the jogging was very jumpy and not smooth.
There is hundreds of parameters on the servo drive to change but I'm new to this and have no clue where to start.
Any ideas/suggestions? Swapping drives/motors wont work since they are different sizes. These were all brand new never used.
Thanks!
-Kevin