Hu,
Thanks for reminding me. I do have a variable frequency drive on my cnc lathe. I don't understand how it works but as you mention in you reply it seems to me, it must be something similar to the commercial roto phase double the capacity as I refered to in my first post. To run a 10 hp I should check into a 20 HP AC Drive. That would save a second motor from running, I'll see how much the initial outlay of cash is. I do remember some trial and error, experimenting having to be done when the lathe AC drive was first set up. |