7/23/2019 Dijagnostika Fanuc 400 Greska

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alarm 401 indicates velocity control signal is turned off. it couod be any axisfeedback, tach, voltage...you must look at diagnostics 700.diagnostics 721 = #1 AXIS, 722=#2 AXIS, 723=#3, THE DISPLAY HAS EIGHT BITS.

starting at the extreme right is bit 0, then bit 1, then bit2 then bit3,

then bit4, then bit 5, then bit 6, and finally bit 7.....

7=0vl=an overload alarm

6=lv=a wire shorted or low excitation to the encoder

5=0vc= excessive current alarm

4=hcal= improper current alarm

3=hval= an overvoltage alarm

2=dcal=regenerative discharge alarm

1=fbal=a wire disconnection..feedbACK LOSS

0=ofal=an overflow alarm