I have a Ganesh Knee mill. It currently has a Mitutoyo Millstar III control on it. It uses Glentek SMA7115 analog servo amplifiers. They use unregulated/rectified 120VAC input. The drives themselves are rated 15A continuous/25A peak @ 30-220VDC. The DC Brush servo motors are Glentek GM4020-39 and are rated at 1.28HP/.995KW, 6.6A Continuous Stall Rating. They do have tachs on them. Feedback is through an encoder on the Z axis servo and Mitutoyo glass scales on X&Y. The original motion controller is a Galil DMC1020. So there must be a board that converts the signals from the glass scales to quadrature input for it.
Mill and Millstar control are mint. I was trying to find a step/dir to Analog converter, that would have been my first choice. I am unsure why these are not more prevalent. My next choice was to find DC Brush Servo Amps that will replace the existing Glentek servo amplifiers.
I see the Viper 200 seems to just be at the top of the voltage range.
Larry, your thoughts on which drive I should choose? I also see you have a new Viper 250.
I guess some of my trepidation is tuning the servo motors once converted. I'm not afraid of doing the actual conversion, I recently converted a Dyna DM4400 with ATC and its up and running, though it took me a year of weekends! My control of choice will be a Flashcut CNC USB signal generator which outputs step and direction
Thanks in advance,
Marty
Mesa, AZ