Hi Art,
I'm using spindle Step/Dir with V7.2, just changed from M1 where
spindle was OK, this is mill. Using 25Khz kernel freq, calibrated
FotV at half speed VFD op = 60hz,increase speed to 3/4 output = 83hz,
increase to max output = 87hz. (FtoV has been checked for linearity
using separate function generator).
Looking at the ouput of the D-FF pre-scalar at 1/2 speed frequent,
but random, change in output from 80uSec to 50uSec, at 3/4 speed
pulses change from 55uSec to 30uSec, not possible to measure pulse
train at full o/p - too random.
The output of the VFD dithers .2 to .3 in the Hz window at all ouput
frequencies.
Hope this helps
Bernard
