I am trying to run a '98 model VF with an HRT-210 4th axis in G93 mode. Runs fine for a bit but will freeze after maybe 5 seconds of running. No alarm, the control just hangs. It will reset and start over just fine. I suspect the feedrate has something to do with it. I have the max feed set at 15,000 in my post processor. Anything much over 15,000 gives an alarm "331 RANGE ERROR" when it finds a line with higher feedrate than that. Runs fine in G94 mode but i really would like to get the G93 mode working. My program makes a lot of tiny moves less than .0010" in distance but it doesnt seem to be running through the code to fast.

Anybody got much experience in this area?