Fanuc — 366 Alarm ((hot))

Do not constantly reset the alarm via MDI to "limp home" a vertical axis. If the Z-axis has a 366 alarm, the brake may be failing. Resetting could allow the axis to drop, crashing the tool or part.

Modern CNC machines operate on a closed-loop feedback system. When you power up a FANUC drive, a specific sequence of events occurs: fanuc 366 alarm