Inspect the cable carrier (drag chain) for the Z-axis. Look for damaged, twisted, or worn cables.
Before disassembling anything or ordering replacement parts, you must gather diagnostic information while the alarm is active. The FANUC system provides multiple diagnostic tools that will pinpoint the root cause.
Servo Overload Alarms: What They Really Mean and How To Respond fanuc 414 servo alarm z axis detect error repack
The FANUC 414 alarm is a multi-layered detection fault. While the CNC screen reads "Z Axis Detect Err," the root cause is monitored natively on the physical or Power Supply Module (PSM) inside the electrical cabinet.
= “Digital servo alarm”
Here’s a breakdown of the for the Z axis, specifically the “detect error” condition, and guidance on repacking (replacing/repairing the Z-axis motor or cables).
In a scenario, the Z-axis (vertical) is under immense load, causing potential intermittent errors due to physical or electrical strain. Common Causes of Z-Axis Detect Error (Repack Application) Inspect the cable carrier (drag chain) for the Z-axis
Once the shorted cable is replaced or the faulty amplifier module is swapped, the final step is often a reset of the system parameters and a test run. If the machine was using an absolute encoder, replacing a dead tool changer battery can sometimes clear phantom errors that accompany axis faults.