Fanuc 414 Servo Alarm Z Axis Detect Error 90%

When this alarm occurs, the CNC screen displays "414 SERVO ALARM: Z AXIS DETECT ERROR". However, the machine's electrical cabinet provides the specific hardware status:

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

On the control screen, check Diagnostic Parameters 200 and 204 . A '1' in the OVC bit indicates an overcurrent condition. When this alarm occurs, the CNC screen displays

The Z-axis servo amplifier (often an Alpha or Alpha i series module) will show a specific alarm code on its 7-segment display, typically 8, 9, or A . Alarm 8: High current on the first axis (L). Alarm 9: High current on the second axis (M). Alarm A: High current on the third axis (N). Primary Causes of Z-Axis Detect Errors Because the Z-axis often carries the weight of

The Z-axis is unique because it must constantly fight gravity. Common root causes include: Diagnose a Fanuc High Current Alarm in 10-Steps