Fanuc AC Spindle Unit Alarms

Fanuc AC Spindle alarms

The following lists alarms related to Fanuc & GE Fanuc AC Spindle alarms. Includes drives Analog, Digital, S, I, P and Serial AC spindle amplifiers. Includes series 6044, 6055, 6059, 6060, 6062, 6063, 6064, 6065 and other non alpha spindle units. The list below is not exhaustive, by any means and gives a brief description. 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.

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Alarm code	Description of Fanuc AC Spindle Alarms
1	Motor is overheated (thermostat operates).
2	Speed is deviated from the command value due to overload and other.
3	Fuse 7 in DC link is blown out.
4	Fuses F1, F2, or F3 in AC input circuit are blown out.
5	Fuse AF2 or AF3 on PCB is blown out.
6	The motor speed exceeds the maximum rated speed (analog system detection).
7	The motor speed exceeds the maximum rated speed (digital system detection).
8	Power voltage (+24 V) is higher than specified.
9	Radiator for power semiconductors is overheated.
10	+15 V power voltage is abnormally low.
11	DC link voltage is abnormally high.
12	DC link current is flowing excessively.
13	CPU and peripheral parts are defective.
14	ROM is defective.
15	Option circuit is in trouble.
16	CPU defective.
17	NVRam issues.
18-23	CPU Problems
A, A1, A2	ROM Issues
6062-6064	Varient alarms for A06B-6062, 6063, 6064, 6065 spindle drives.
15	Spindle Switch / Output switch alarm
16	Ram Abnormality
19	Excessive U Phase current detection offset
20	Excessive V Phase current detection offset
24	Serial Transfer Data Error (Not normally a fault with spindle drive).
26	Disconnection of speed detection signal for C contouring control
27	Position coder signal disconnection
31	Speed detection signal disconnection motor restraint
33	Insufficient DC link section charging
51	Under Voltage at DC Link Section

Fanuc Alpha Spindle Power Module alarms are listed separately.