Fanuc 414 Servo Alarm Z Axis Detect Error ^hot^ Jun 2026

If the cables are ruled out, the Z-axis servo motor itself could be the source.

The error is generally categorized into three areas: the motor/cable, the amplifier, or mechanical issues. Diagnose a Fanuc High Current Alarm in 10-Steps fanuc 414 servo alarm z axis detect error

Remember the golden rule: Start there. Check the simple things first. And always, always block the Z-axis before you troubleshoot. If the cables are ruled out, the Z-axis

To narrow down the source, check the following diagnostic bits on the CNC’s page : Fanuc 414 Servo Alarm Z Axis CNC Vertical machine Check the simple things first

The Z-axis is particularly susceptible to this fault because it typically fights gravity, requires a mechanical brake, and is frequently exposed to heavy cutting forces, coolant pooling, and cable flexing. Step 1: Analyze Diagnostic Parameter 200

If your machine uses identical servo amplifiers or a multi-axis drive module (like a dual-axis Alpha i drive), you can isolate the failure by swapping components.