#105 & #163 alarms

[Greg 24]

Can anyone help me out here? I plan on calling the HFO tomorrow morning, but would like to get an idea of what might be wrong before calling them. I have an Haas 2000 Mini-Mill & has been running great up until tonight. The machine was cutting a part when all of the sudden it spits out an #105 alarm (z-following error too large). When I hit reset to clear it & try to home z axis out it gives me an #163 alarm (z- zxis over current or drive fault). I turned the machine off & then turned it back on a few minutes later and referenced all the axis out (with no alarms) & I was able to run another part, but then it did the same thing again with the alarms. I take it it is either the servo drive or motor going out or is out. Does anyone else have any ideas or something that I could check out? Any help will be greatly appreciated!!!

[Geof]

Originally Posted by Greg 24 ..... Does anyone else have any ideas or something that I could check out? Any help will be greatly appreciated!!!

We had a similar fault quite a while back, same age machine, and I seem to recall it was an intermittent short circuit in a cable assembly.

[serviceman]

it can also be the brake board for the z axis brake the z brake may be losing power and clamping casing alarms the brake board is easily repairable with new diodes otherwise pay the man.