Hi Guys,
I was searching the forum and found this topic. Did you ever make any progress? I am having the same issue with the same setup- two DC Servos running off one Granite DualDC drive. And the same results- never loses position during straight moves, but arcs will throw it off every time. A lot. Diagonal moves also seem to cause trouble, though not as severe.
Any ideas? I was thinking I may be better off going to separate drives.
Thanks,
Kevin