I'm getting very frustrated with this spindle setup.
So as I mentioned I have a varispeed head with high and low range. I set the varispeed dial on high and let Vfd slow it down for me.
I have pulley 1 set up for 500 to 6100 rpm with ratio 1. Pulley 2 set up for 50 to 499 rpm with ratio 9.
I have done auto spindle calibration for both pulleys. The problem is with pulley 2. Mach controls it same exactl way as pulley 1 but in the lower range. Meaning that control ratio displayed in the tuning wizard is 1 for 499 rpms, but the motor is turning at same speed as it would in pulley 1 for 500 rpms. Also, there is a grayed out box which says index piles per rev and it shows 1 for either pulley. I think this needs to read 9 pulses per rev in my case but I don't think there is a way for me to change this.
All I can seem to be able to change is the pulley set up, but changing the ratio there just changes the displayed rpm without affecting the motor control.
This is why I originally thought of needing the true once per rev index in any gear to make things work, but now I'm not even sure that will solve problem. I'll try that after I finish this post.
Another issue I have is with pulley 1 rpm being off. I would expect that after completing the auto spindle calibration the new curve for the pulley would be used, but the rpm stays incorrect. I tried save settings and restart of Mach but nothing works.
What am I doing wrong???