APM
All alarm codes
ALARM 205

Milling controller malfunction

External alarm from the milling spindle controller — frequently a milling spindle amplifier fault, disconnected milling VFD, or misaligned coupling/sensor at...

Controls
T-3, T-32
Machine series
Quick Turn (multi-tasking)

Causes

  1. External alarm from the milling spindle controller — frequently a milling spindle amplifier fault, disconnected milling VFD, or misaligned coupling/sensor at the mill spindle

    • HelmanCNCindustry_blog
      alarm 205 is a milling controller malfunction alarm that indicates an alarm occurred at the milling spindle controller

How to clear it

  1. 1

    Turn off the main circuit breaker, then turn it back on. If the alarm persists, contact Mazak service.

    • HelmanCNCindustry_blog
      Turn off the main circuit breaker and then turn it back on. If the alarm is not released, please contact your MAZAK service representative.

Additional notes

Applies only to lathes with a milling spindle (live tooling).

Confidence: medium · Single source. Direct fetch blocked.

First sourced: 5/21/2026