: Affects the L-axis (usually the first axis on the drive). Alarm 9 : Affects the M-axis (second axis). Alarm A : Affects the N-axis (third axis). Common Causes
Verify that the incoming 3-phase power to the amplifier is balanced (typically 200-220V). fanuc 414 servo alarm z axis detect error
This alarm is notorious among maintenance technicians and machinists. It is a "hard alarm," meaning the control has detected a fatal electrical or mechanical fault, not just a software glitch. If you ignore it or simply clear it without diagnosis, it will return immediately. : Affects the L-axis (usually the first axis on the drive)