Decided to check my actual spindle speeds (PCNC 1100 w/vectorless drive upgrade) against the input value, and this is what I got. It's not BAD (less than 5% error over most of the range), but I'm wondering if it could be better. Is this comparable to what the rest of you are seeing?
The frequency value at 500 RPM input is 34.6, exactly what it should be per the Tormach calibration procedure. I checked the Emerson Commander SK manual for tips, but nothing jumps out at me.
Is there a way to massage this curve, or should I just nudge the input value on critical jobs to get the correct actual RPM?
TIA