On the control screen, check Diagnostic Parameters 200 and 204 . A '1' in the OVC bit indicates an overcurrent condition.
The on the Z-axis is a high-current detection error within the digital servo system. It signifies that the CNC control has detected abnormal current flow or a hardware fault related to the Z-axis servo amplifier, motor, or cabling. Because the Z-axis often carries the weight of a spindle or heavy tooling, this error can also be triggered by mechanical binding or counterweight failure. Understanding the 414 Alarm Signal fanuc 414 servo alarm z axis detect error
The Z-axis is unique because it must constantly fight gravity. Common root causes include: Diagnose a Fanuc High Current Alarm in 10-Steps On the control screen, check Diagnostic Parameters 200