Hi all, I have several machines utilising a PF755 on CIP motion. Occasionally the operator reports the jog speed ramps up rapidly, then the drive faults on overspeed. The drive performs fine in "position loop" mode but when it is in manual and controlled via either position or velocity loop, the above situation arises randomly. I have tried controlling the jog via an incremental MAM instruction with the same result. Gone back to Rockwell and implemented all their recommendations to no avail.
Any recommendation on where else to possibly turn next would be appreciated. Thanks
Any recommendation on where else to possibly turn next would be appreciated. Thanks