Hi all,

I have a Denford Orac which is using Mach3 to operate.
Yesterday, both PKS Digiplan SD/3 stepper drivers gave up the ghost (machine hadn't been switched on for a while previously)
I had one spare drive, which I fitted, and it works, but i have no more, and they seem hard to find nowadays.
I am hoping to be able to fit a newer, more readily available drive in it's place, but have a couple of questions, if you don't mind?
I have identified the wires to the SD/3 drive, and know the stepper coils, step, direction and 24VDC connections to it.
But.... there are 4 black wires, coming from a Toroidal Transformer. The transformer has AC voltages of 27 0 27 and 19 0 19VAC, giving taps of 55V and 38V too.
Could anybody please recommend a drive which could deal with this setup?

For info, the steppers are MAE, HY-200-3424-310-A8, which i believe have phase current of 3.1A.

Any help would be very much appreciated.

Thanks Paul