wiring a g201

hi all

does anyone have a sample wiring diagram for a g201.
i intend to hook 3 of them to flashcut.
i saw that someone had added a cap on the terminal, what is that good
for?

i have:
flashcut sw+blackbox
80v/900w dc powersupply
3 api turbosteppers, 1200 oz/in

i need to put this together the best and most safe way (overkill
prefered)



thanks
js