ServoMR-J4Verification pending — cross-check with the official manual
MR-J4 AL.54 — Oscillation detection
Trip — immediate stop
CAUSE
Why does it occur?
- - An oscillation of the servo motor was detected. Detail No. Detail name Cause Check method Check result Action Target 54.1 Oscillation detection error (
- The servo system is unstable and oscillating. Check if the servo motor is oscillating. Check the torque ripple with MR Configurator
- The torque ripple is vibrating. Adjust the servo gain with the auto tuning. Set the machine resonance suppress
REMEDY · Step by step
How to fix it?
Adjust the gain and check the mechanical rigidity
Do not reset repeatedly before identifying the cause. Repeated resets while ignoring a trip/alarm can cause secondary damage (IGBT failure, motor winding damage, etc.).
SOURCE
Related manual page
Summary based on the official Mitsubishi Electric manual. For accurate and complete information, always consult the official manual.
Open official manual ↗