The voltage will determine the RPM of the motors so you should be able to work it out roughly from there. Your 110v DC in may come out of your amps at a bit less than that so it wont be an exact figure but I would think if work on a 90V for the motors you will get a good idea of what you will get. What are the motors ratings?
Not quite sure what you are meaning regards the power, the way I have my machines is they are fed from a single supply, 3 phase 415v in my case, and then all hardware is powered from that. I have my machines so E-Stop kills all drives, motors, hydraulics etc. PC, PLC etc are always live unless main cabinet switch is off.
Hood