Fanuc 414 Servo Alarm Z Axis Detect Error Jun 2026

The feedback cable between the servo motor and the amplifier carries delicate signals (sine/cosine waves). Coolant, oil, or chips can corrode connectors (e.g., JF1, JF2, JX5). A broken shield or cut wire introduces noise, leading to a "Detect Error."

: High current on the L-axis (the first axis on the drive). 9 : High current on the M-axis (the second axis). A : High current on the N-axis (the third axis). fanuc 414 servo alarm z axis detect error

A: Thermal expansion in the Z-axis ballscrew or motor encoder can cause signal drift. Check the encoder's thermal specifications . Also, verify Pr. 2047 (Thermal displacement compensation). The feedback cable between the servo motor and

Seized ballscrew bearings, a jammed waylube system, or a gib that is too tight can overload the servo. The motor moves slightly but not enough, causing the error to accumulate. 9 : High current on the M-axis (the second axis)