Need Help!- help with fault on vf2

[daleman]

hi does anyone have any ideas on what could be causing a x limit switch fault whilst the machine is rapiding its fine when feeding in g1 but as soon as you rapid it faults i have replaced the limit switch ,and i have had a look at the encoder to see if was loose but seems fine ,
so any further ideas would be greatly appreciated thanks in advance,

[ctvanslyke]

replace the encoder, happened to all out haas's.

[haastec]

What exactly is the alarm you are getting?

Quite possibly the encoder as mentioned but need a little more specifics as to the alarm.

[daleman]

thanks for the suggestions it turned out to be the encoder after all running fine now this was our oldest haas machine in the shop and this was the first time it broke down on us we have quite a few machining centres now and are expecting anothe brand new vf3 on mon morning that takes us to 12 hope the new one is a good as the rest have been

[Wizzard of H]

The X limit switch alarm is a result of only one thing - that is the home switch circuit was sensed or "opened" at any time after the machine originally found the zero position. This is not likley the encoder unless the encoder data was so bad the axis has moved to a position where the home switch was triggered. This is more often caused by a broken wire leading to that home switch or by accumulated chips running into the home switch. If the encoder data was bad, you would have gotten an encoder alarm long before this.

[Donkey Hotey]

Originally Posted by Wizzard of H This is not likley the encoder unless the encoder data was so bad the axis has moved to a position where the home switch was triggered.

Pssst...read the post above yours.

[Wizzard of H]

Above? Below? Before?
This is still much more likely a case of installing a replacement motor that was not needed and the service technician forgot to tell the customer that the technician also cleaned a lot of chips out from around the home switch.

[daleman]

we don't bother much with the haas technicians we had already replaced the home switch long before i posted the problem on here
we only replaced the encoder on the off chance that this was the fault because we had tried everything else
after replacing the encoder the machine has run perfectly since

[CamIam]

12 VF3's!!! Cool man cave. I only have 1.

[daleman]

we dont have 12 vf3's we have 3super mini mills , 1 super mini mill 2,
2 vf2's , 1 vf1 ,2 vf 4's , 1 vf3, 2 vfoe's

[Geof]

Originally Posted by daleman we dont have 12 vf3's we have 3super mini mills , 1 super mini mill 2, 2 vf2's , 1 vf1 ,2 vf 4's , 1 vf3, 2 vfoe's

I get the feeling you are just as happy with Haas as I am.

6 Super MiniMills, 1 MiniMill, 1 TM3P, 1 GR510, 3 VF2, 1 VF0, 2 TL1s, 1 TL1P, 1 TL2P, 2 GT20s, 1 HL1, 1HL1-BB, 6 HRT 210s, 2 HIT 210s.