[rabishop]

We have a Genash VMC-2216 with a Fanuc Oi-MC control and Fanuc 10,000 RPM spindle motor. The axis' keep moving after the spindle stops for some reason. There should be a perameter that does not let the axis' move if the spindle is not turning. Does anybody know what we need to do to stop this from happening. We want to leave this machine running all night but can't do that with this happening.

[Al_The_Man]

I am assuming there is some kind of spindle alarm?
This is the only way the control knows the spindle has stopped, in any case the alarm should shut the machine down?
The machine tool builder should also have built into the ladder if neccessary, the spindle status of Up-to-speed and At zero speed.
These are customarily used when a non-alarm fault occurs such as these happen and the feed hold can be actuated or other preventative measure but these are done by the MTB in the ladder.
Al.

[underthetire]

That would be normal for any mill if there are no alarms generated. Since mills are almost always programed in inches per minute, vs lathes at inches per revolution, the axis really don't look at spindle feedback until you tap or something.

[Al_The_Man]

There has to be an up to speed signal that originates from the spindle regardless, otherwise milling can start as the spindle rpm builds up.
Even my little Excello has that?
Al.

[underthetire]

Although that is true for up to speed, you can still program without the spindle on command and have axis movement, no? There are parameters for spindle speed arrival on most machines i've seen, but i've seen them without as well. I've seen some really jacked up ladders from some overseas companies as well, even some that were somewhat "famous".

[Al_The_Man]

Although that is true for up to speed, you can still program without the spindle on command and have axis movement, no?

True, but it can be detected in a few ways, one is to register an Up-To-Speed or At-Speed after a M3/M4 is issued, this completes the FIN signal, if any kind of spindle stop such as M5 or other has not been issued when the At-Speed disappears, a feed hold is issued in the ladder.
I have always tried to implement it in some form when writing a ladder.
Al.