It certainly could be the configuration - in fact this sounds most logical.
Is this the table lift or one of the axis?
Say it's the Y-axis, if you move it from the origin (0) to a set point does it move the correct distance? If you then move it back to the origin does it end in the exact location it started?
If so, it's the configuration.
Here's why. The stepper has fixed increments, so for it to run slow it is either losing steps (could be due to mechanical, motor or driver fault) or being sent slower pulses. When steppers lose steps they do not recover them unless they have encoders (rare) so it will be short of the commanded distance.
Zax. |