Big SeriesII stepper info and advice needed...

Hi,

I'm working on drive controllers for this stepper and have found
little information so far on spec for these beasts.

I'm sure there are lots of people out there who have similar original
equipment
steppers on their mills, so this is an oppurtunity for us kickoff
a definitive thread on the subject. Also this could aid designers
like Mariss in fact finding for his higher voltage Gecco drive
project.

Please jump in and add any information of suggestions (like diagrams
or photo angles, etc that will help descibe the utilization of these
steppers.)

I'm new to stacked steppers, but I think this is a typical 8wire
universal type stepper; so it can be wired in many ways. Currently
I think it is wired as a 6wire unipolar type with centertap going to
V+(motor). My guess is V+(motor) is 90-180vdc.?.

Thanks,
Lee