Hi all,
I'm just in the power supply sizing phase of my CNC build.
My specs:
4x DM542 drivers at a max of 50V each.
4x 4.2A/3.8mH/425oz-in Nema 23 steppers.

I've calculated that:
4x 4.2A gives me 16.8A current draw. Make it 70% of that gives me around 12A requirement.
Max voltage of drivers is 50V, so to get an input of around 42V, I'd need a transformer with secondary of about 30V (or 2x15V x 1.414 for regulation and filtering capacitance).

12Ax30V is 480VA, so If I go with 625VA to be safe, would that be ok?

Thanks
Neal