Verify that the incoming 3-phase power to the amplifier is balanced (typically 200-220V).

indicates that the CNC has detected abnormal current flow or a fault within the servo drive, motor, or cabling for that specific axis TIE Industrial Fanucworld Core Causes of the 414 Z-Axis Alarm

: Inspect the amplifier’s rear fan and heat sink. Clogged fans or a "blast of heat" from the cabinet can trigger current-related alarms Reseat Boards