Okuma Alarm A-8603 – C-Axis Clamp/Unclamp Condition

Alarm A 8603 on Okuma machines indicates an abnormal condition during the C-axis clamp or unclamp operation. The control system expected the C-axis to reach a specific clamped or released state, but the feedback signal did not match the commanded status.

This alarm may be caused by hydraulic pressure issues, a faulty clamp sensor, mechanical resistance in the C-axis mechanism, or a malfunction in the control circuit responsible for the clamp/unclamp sequence.