The original setup used the secondaries of a 3 phase transformer to make 3 separate power supplies, one for each axis. There is a another single power supply that chops across a saturatable reator for each axis to limit the current.
For your setup you would disregaurd the single supply and reators. Just guessing the separate supplies will be around 100VDC maybe higher. I used the original drives in my setup.
A word of advise the original steppers do not like microstepping. If your ideal is to get better positioning accuracy than the stock 0.001 for the Series I, or 0.0005 for the Series II you may want to consider DC servos with encoders.
Darek |