Help, VF OE: alarm #194

[teal854t]

When we home the machine, it comes up with alarm #194, B zero return margin too small. We swap cable, indexer unit and still the same. Sometimes jog the indexer for 360 degrees or so and it homes fine. Could it be from the controller board?
Thanks

[Geof]

Originally Posted by teal854t When we home the machine, it comes up with alarm #194, B zero return margin too small. We swap cable, indexer unit and still the same. Sometimes jog the indexer for 360 degrees or so and it homes fine. Could it be from the controller board? Thanks

Probably a dirty microswitch sticking or a chip on a proximity detector.

[teal854t]

Originally Posted by Geof Probably a dirty microswitch sticking or a chip on a proximity detector.

If the proximity switch is bad why does it still happen after changing it with another indexer unit and cable?

[JoBwan]

teal854t,
Call your HFO. They may be able to talk you thru a parameter setting to fine tune the indexer to the machine. Just a thought??

[teal854t]

Haas tech. came over and adjusted the grid shift parameter for B axis. So far so good.
Thanks for all the help.