Fanuc Beta Servo Unit Alarms and Error Codes.

Fanuc Beta Servo Unit Alarms. These alarm and error codes cover the A06B-6093 series.

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Alarm number in Series 0-C (Servo Alarms)

Alarm No Description
309 Alarm2a pulse coder error alarm
309 Alarm4Pulse coder communication error alarm
400 Alarm1 bit7Overheat alarm (motor)
414 Alarm1 bit5Overload alarm( OVC)
414 Alarm1 bit3DC link over voltage alarm (LVDC)
414 Alarm1 bit6Low DC link voltage (LVDC)
414 Alarm1 bit2Over generative discharge alarm (DCOH)
414 Alarm1 bit4Over current alarm (HC)
416 Alarm1 bit1Feedback disconnected alarm
417Invalid servo parameter setting alarm

 

Alarm number in Series 16, 18, 20, 21 (Servo Alarms)

Alarm No Description
350 Alarm3a pulse coder error alarm
350 Alarm3 bit 3Rotation speed data error alarm
351 Alarm4Pulse coder communication error alarm
400 Alarm1 bit7Overheat alarm (motor)
414 Alarm5 bit6Current conversion error alarm
414 Alarm1 bit5Overload alarm( OVC)
414 Alarm1 bit3DC link over voltage alarm (LVDC)
414 Alarm1 bit6Low DC link voltage (LVDC)
414 Alarm1 bit2Over generative discharge alarm (DCOH)
414 Alarm1 bit4Over current alarm (HC)
416 Alarm1 bit1Feedback disconnected alarm
417Invalid servo parameter setting alarm

 

Servo Amplifier Unit Alarms

If alarm condition related to the servo amplifier unit occurs, the alarm indicator on the amplifier front panel is lit. Check the description of alarm at servo tuning screen.

TypeDescription
Over voltage alarm (HV)This alarm occurs if the DC voltage of the main circuit power supply is abnormally high
Low DC link voltage alarm (LVDC)This alarm occurs if the DC voltage of the voltage main circuit power supply is abnormally low or the outer circuit breaker trips
Over regenerative discharge alarm ( DCOH)This alarm occurs if:

The average regenerative discharge energy is too high.

Overheat Alarm (OH)This alarm occurs if the temperature of the amplifier is abnormally high
Fan Alarm  (FAL)The fan, built into the servo amplifier unit has stopped
Over current alarm (HC)This alarm occurs if an abnormally over current flows in servo amplifier unit

 

Pulse Coder Alarms

Alarm CodeDescription of Alarm/Error
360 n  axis: abnormal checksum (int)
361 n  axis: abnormal phase  data (int)
362 n  axis: abnormal rev.data  (int)
363 n  axis: abnormal clock  (int)
364 n  axis: soft phase alarm (int)
365 n  axis: broken LED (int)
366 n  axis: pulse miss  (int)
367 n  axis: count miss  (int)
368 n  axis: serial data error (int)
369 n  axis:  data trans.error (int)
380 n  axis: broken LED  (ext)
381 n  axis: abnormal phase (ext lin)
382 n  axis: count miss (ext)
383 n  axis: pulse miss (ext)
384 n  axis: soft phase alarm (ext)
385 n  axis: serial data error (ext)
386 n  axis: data trans. error (ext)

Servo Amplifier Alarms

Alarm CodeDescription of Alarm/Error
430n axis: servo motor overheat
431n axis: cnv. overload (OH)
432n axis: cnv. lowvolt con./powfault (LV)
433n axis: cnv. low volt DC link (DCLV)
436n axis: softthermal (OVC)
438n axis: inv. abnormal current (HC)
439n axis: overvolt power (HV)
440n axis: cnv.ex deceleration pow. (DCOH)
441n axis: abnormal current offset
443n axis: cnv. cooling fan failure (FAL)
445n axis: soft disconnection alarm
446n axis: hard disconnection alarm
447n axis: hard disconnection (ext)
448n axis: unmatched feedback alarm
460n axis: FSSB disconnection
461n axis: illegal amp interface
462n axis: send CNC data failed
463n axis: send slave data failed
464n axis: write ID data failed
465n axis: read ID data failed
466n axis: motor/ amp combination
467n axis: illegal setting of axis

 

P/S Alarms

Alarm CodeDescription of Alarm/Error
5134FSSB: open ready time out
5135FSSB: error mode
5136FSSB: number of amp is small
5137FSSB: configuration error
5138FSSB: axis setting not complete
5197FSSB: open time out
5198FSSB: ID data not read