An axis that should be standing still moved outside its standstill tolerance.
What causes Siemens alarm 25040?
Vertical axis brake or counterbalance problem. Mechanical slip. Drive or tuning problem.
How do I fix Siemens alarm 25040?
Note the axis. Watch for drift at stop. A tech should check brakes, couplings and tuning.
Alarm numbers and text can differ by control model, software version and machine builder. This page is a starting point from people who have worked on these machines, not a replacement for your machine builder's manual.
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