Fanuc Spindle Alarm 03 or AL-03 Information by KFASLLC

KFAS: Fanuc CNC Parts, Service, & Repair

Fanuc SPINDLE ALARM 03

Spindle alarm AL-03 is generated by Fanuc SPM or Spindle Amplifier.

AL-03 Fuse on DC Link Blown(SPM is faulty)

Steps to be taken to diagnose Alarm 03:

Check if the AL-03 is coming on at spindle command.

*CAUTION: High Voltage present.
Note: Some Machine's electrical cabinet doors are equipped with "door interlock" that will cause the breaker to trip when the door is open.
See the machine's manual for information on how to bypass so that you can observe the alarm LED status

Fanuc CNC Alarm App for your smart phone