I built a new controller for my 9x20 lathe using a 5i25/7i76 combo. I thought I had everything working but I still can’t get the spindle working correctly. I have a 1.5hp PMDC treadmill motor that I am controlling with a Cycletrol-150 DC controller. The am using the analog out from the 7i76 to replace the potentiometer to control the spindle speed. I have a 100 slot encoder with index (homemade) on the spindle.
The spindle starts under LCNC control but I am not getting an “at speed indication” at above about 100rpm. The motor sounds like is is running at a steady speed but the Spindle Speed indicator fluctuates wildly. I am suspicious of the spindle encoder. Before I was just running it as a 100 count counter with index and it worked fine. I can’t figure out in PNCConf how to set up a spindle counter with index for the 7i76. Questions: Is it likely that my encoder is the problem? I don’t know how to adjust the detectors to be out of cycle by 90°? Any helpful hints? Should I just go back to the 100 slot counter? Should I replace my whole homemade encoder with a real commercial spindle encoder? Sent from my iPad _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
