Fanuc AC Spindle Unit alarms

The following lists alarms related to Fanuc & GE Fanuc AC Spindle Units. Includes drives Analog, Digital, S, I, P and Serial AC spindle amplifiers. Includes series 6044, 6052, 6055, 6059, 6060, 6062, 6063, 6064 and other non alpha spindle units. The list below is not exhaustive, by any means and gives a snapshot. Please contact us for any more information related to your alarm on your GE Fanuc AC Spindle unit. To find out more about CNC’s exchange services or repair solutions – please contact us.

Alarm codeDescription
1Motor is overheated (thermostat operates).
2Speed is deviated from the command value due to overload and other.
3Fuse 7 in DC link is blown out.
4Fuses F1, F2, or F3 in AC input circuit are blown out.
5Fuse AF2 or AF3 on PCB is blown out.
6The motor speed exceeds the maximum rated speed (analog system detection).
7The motor speed exceeds the maximum rated speed (digital system detection).
8Power voltage (+24 V) is higher than specified.
9Radiator for power semiconductors is overheated.
10+15 V power voltage is abnormally low.
11DC link voltage is abnormally high.
12DC link current is flowing excessively.
13CPU and peripheral parts are defective.
14ROM is defective.
15Option circuit is in trouble.
16CPU defective.
17NVRam issues.

Fanuc Alpha Spindle Power Module alarms are listed separately. Click here