Fanuc Cyclone 400, 414 and 424 error alarms

bradders · Post by **bradders** » Wed 04 Jul , 2007 14:21 pm

WE HAVE THE FOLLOWING ERRORS ON A FANUC CYCLONE AND IT WILL NOT RUN

400 SERVO ALARM : (OVERLOAD)
414 SRVO ALARM :X AXIS DETECT ERROR
424 SERVO ALARM Z AXIS DETECT ERROR

NOT READY ALARM

DIAGNOS 720 11000100

ANY IDEAS ?

Steve · Post by **Steve** » Wed 04 Jul , 2007 14:48 pm

Not sure on the cyclone what drive is fitted but.

720 bit 7 the LH bit means OVL An overload alarm has ocured. 720 bit 6 (the second in from the left) is IV A voltage shortage has occured. and finaly bit 2 the 3rd in from the right is An alarm of the regenerative discharge unit has occured.

I would check if the drive is a dual axis drive as both drives have the same fault. Check if there are any fuses on the drive.

Is the fault there at power up? Or do the axes try to move then trip out?

It is most probably a fault on the Drive board.

Post by **Denford Admin** » Thu 05 Jul , 2007 12:22 pm

Just for reference:

Fanuc axis Diagnostic no 720-723 are axis error bits - one for each axis up to 4 (ie 720=X axis 721=Zaxis):
bit 0 (right hand side): overflow alarm (OFAL)
1: wire disconnection alarm (FBAL)
2: regen discharge unit alarm (DCAL)
3: overvoltage alarm (HVAL)
4: an improper current alarm (HCAL)
5: excessive current alarm (OVC)
6: voltage shortage alarm (LV)
7: overload alarm (OVL)

Post by **Denford Admin** » Thu 05 Jul , 2007 12:23 pm

I would guess that a circuit breaker or fuse has blown, that supplies the axis drives.

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