I have a 1993 Citizen L20 that is having a new problem...Spindle will no go over 2810 RPM...All works well at lower spindle rpm but any call over 2810 just yields 2810 rpm..program 4000 you get 2810.
Inverter is FR-A520-3.7K No alarms happen
Another new problem...sporadically the gang will be making parts fine and then all of the sudden the parts will be .039 to large in diameter...(hmmm 1mm) if I keep running it every part is a little smaller until it gets back to where it was....usually about 50-100 parts...So what I have been doing is take the bar out and cut air for 50 to 100 parts then put the bar back in and all is fine ...this happens every few weeks...
No alarms happen .....Anyone have any ideas?