If you go to pmdx.com, Steve is the guy that helped me pick out what I needed: PMDX-122 breakout board and 3- PMDX-150 driver boards which I think are now discontinued (I just found out). The transformer in my mill put out voltages we able to rectify to meet the requirements of his boards. A friend and I built a couple of regulators for that purpose. You will more than likely need to do the same thing if you have a tap off the transformer which could work. If anyone is going to CFever, he is there usually.
I removed their (Denford's) boards from the mounting plate and was able to mount all the new boards on it very neatly, if you do not have a schematic for the machine, you will need get one and/or trace out each circuit for which they apply: E-Stop, door switch, limit switches, spindle speed board etc. I may have a schematic from mine but, it may be a little different according to the pic's. Denford sent me one! Anyway, you may seek help from a friend if you are not strong in that department as I did.
BTW, I will be displaying at CF as well as my friend who helped me. I will be at the table where "Duesy" is being displayed , not mine but another friend for the ease of locating me. Good Luck! Colin