I posted some photos which might help out

I've posted some photos in the Photos section of Master5@yahoogroups.com in
a folder called "Washcomps CNC Bridgeport that might help some of you out.
Among other things it has a schematic that shows:

Limit and home switch setup with a safety interlock
Power brake and clamp with safety interlocks
Forced "Start" Button as safety after software is initiated
Stepper motor drives do not receive motor power until after "Start" button
is pushed to reduce heat generated

Stepper motor wiring for NEMA 42 Sigma SloSyn motors used by Bridgeport
(Different terminals than Superior Electric)

Front picture of controller shows large white heat sink onto which stepper
drives are mounted
There are two fans blowing up (from PC compartment) across the bridge
rectifyers and two fans in the door of the cabinet to get rid of the heat
The two Y axis limit switches and one of the X axis switches are shown
mounted in a photo

Have Fun!

Regards,
Jeff


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