Dear all,

I have marking machine that marks a product.the marking process is done using servomotor that rotates 360 deg. forward and reverse.the machine run 5 years till now without any problems.but a few days ago a problem appeared that is the servo does not return back to home position(zero position) as previous.there is a shift with about 4 degrees . this shift continue while machine is running that could make a problem.how can i re-adjusted that motor to stop in its zero position well

Specifications:-

1-geared servomotor type 1FK7063-5AH71-1PG3

2-Drive-clique support.

3-resolver R1 4DI.

4-starter commissioning tool.

Thanks