Thanks for the info. I will try these ideas Monday when I go back to work. One thing I forgot to mention is that when the motor moves on its on, its like it is being jogged. It's not just drifting off slowly. Its actually moving considerably and at jog pace. I dont think these drives have a gain pot on them. These are digital servo drives. I've seen the drift problem on our other machines which have siemens drives. They actually have a gain pot (Kp) which I ocassionally will adjust. I dont know how much and how fast they can make a motor move but in my experience it is rather small. |