Servo Tuning detailed How To.
Sorry for the confusion, for clarity and not to muddy the waters anymore I have made my own post to continue my tuning endevor.
Recently, I found my X-axis was oscillating really badly when routing out complex shapes. Straight X and Y cuts were fine but diagonal was the worst, unless I really slowed down the feed.
HueyHQ wrote: On my retrofit, I had a lot of trouble tuning following all the advice I had found because I had entered an arbitrary value for the acceleration parameter (way too high). It wasn't until I bumped it down to something more in line with what I had seen in others config files, that I could even start to tune my servos. My machine works fine now, but doesn't move as fast as it did before the retrofit, so I could go back and refine the tuning with higher accel params.!
I was never really satisfied with the tuning, so I re-visited it yesterday.
What I found is, if I reduce to P = 0.1, the movements are now as smooth as silk, leading me to believe that the PID is possibly done in the servo amps? To those who know more about this than I do, does this sound right? (I have attached the driver manual in case that sheds any light, for anyone who is THAT interested!)
Setting P = 0 causes a following error, so what would be the lowest I should set it to, or is 0.1 OK?
I've also tuned FF1 = 0.00727 and FF2 = 0.00001 to get a reasonably flat (albeit very noisy) halscope'd f-error.