What are some common causes of a Z-axis over current alarm? I have had the z-axis motor rebuilt and installed a new z-axis drive and I still get a z-axis over current alarm. I can jog the z-axis with the hand wheel with no problem. If I try to jog it with the rapid button I get the alarm. I can clear the alarm and jog with wheel, no prpblem, jog it with rapid button and instant alarm. Before I had the motor worked on, I used to get a following error. Now it is the over current alarm.