Re: Z Overtravel - Fanuc 0i




"Greg" <not_here@xxxxxxxxxx> wrote in message
news:JFXEe.3211$PL5.313451@xxxxxxxxxxxxxxxxxx
> "PrecisionMachinisT" <precisionmachinist@xxxxxxxxxxx> wrote in message
> news:F6adnYIuc7dOqnnfRVn-qg@xxxxxxxxxxxxxxxxxx
> >
> > "Greg" <not_here@xxxxxxxxxx> wrote in message
> > news:1UUEe.3162$PL5.311868@xxxxxxxxxxxxxxxxxx
> >> Good day all,
> >> I have come in this morning to find I cannot move any axis on my
machine,
> > it
> >> appears Z has an over travel, although no alarm is present. The dog is
> >> approx 100mm above the limit switch.
> >> Is there an easy way to override? Machine is an Akira-Seiki 3 axis
> > machining
> >> centre, with a Fanuc 0i controller. I am new to Fanuc, this machine is
> > only
> >> a few weeks old.
> >> Please help.
> >> Thanks in advance,
> >> Greg.
> >>
> >
> >
> > In a pinch, you can always remove the cover, shut it down and then see
if
> > you can turn the ballscrew by hand...
> >
> > --
> >
> > SVL
> >
> Thanks for the reply.
> I found the problem - not related to overtravel as it turned out.
> In the process, I have managed to f*&k up the zero for 'x' axis, and
> possibly 'y'.
> Ant idea of the correct procedeure to rezero these axis? Using the ZRN,
'x'
> moves untill it is mechanically prevented from doing so (OVC thermal
alarm)
> 'y' appears to zero OK, but who knows if the position is correct, and 'z'
is
> fine.
>

Sorry, not familiar with the procedure for that particular
controller--perhaps someone else might chime in here.

--

SVL


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