I'm gathering the parts to retrofit a cheapo 3-in-1 lathe/mill to CNC. I've got funny Servodisc geared PM DC motors (type 9FGHD) with HP HEDS type quadrature encoders for X and Y and am trying to figure out what drive to use for them. These motors apparently have very low inductance and require drives capable of handling this (high switch frequency, added low-pass filtering, or linear mode).
The spindle drive I'm hoping to use is a 100V DC 8A treadmill motor with a 4000-count BEI quadrature encoder.
Would the Viper 100 be appropriate for the X and Y? I tried downloading the manual to see the specs here:
http://www.larkencnc.com/dloads/viper-manual.pdf
but the manual seems to be corrupt or damaged, Foxit or Adobe Reader won't open it.
I guess the spindle motor drive won't matter too much as long as the encoder resolution isn't too high, 4000 count @ 1000 RPM = 66Khz. I have other encoders laying around though with lower counts.