Need Help/info Electrocraft/Summit Engineering/Hasbach Co on Lagun Mill

[Greenbuggy]

Ok a little backstory, I just recently purchased this Lagun FTV-3 CNC mill. Its someone else's discarded project, apparently the owner before last just wanted to use it to mill in one direction, so they locked the gib locks on the Y, pulled (lost) the motor and rigged up some sort of crude controller with a switch and speed dial to control the X axis. Then pulled half the electronics necessary to make that happen and sold it to the guy who sold it to me...I like a challenge, right? For now I think I can use it as a manual machine while I clean it up and try to get the CNC hardware sorted out.

So I'm talking to Lagun now trying to get some info and a manual coming but they readily admit this was one of their "Early" CNC's, based on serial they said made around 1978 and originally fitted with a Bandit control by Hasbach Co, now out of business. They didn't have much info on the motors but are digging, so I'm putting this out here to try and locate some more info and help me decide whether I'm going to try to reuse whats still on the machine or replace everything.

To that end I'd like to know what voltage is needed and what torque these motors produce, and if anyone can tell me anything about the feedback mechanisms on these motors, what drives they will work with, etc. Basically I'm trying to get a feel as to whether its more work and headache to keep the X and Z axis AC servos or whether I want to ditch everything and go to steppers and gecko drives. Keep in mind I have almost no experience with servo motors or their drives but a bit with steppers and their drives

Both the X and Z axis motors have a tag that says "Electro Craft permanent magnet servo motor" model E-70.00. The Z axis servo also has a "Dana-Summit" tag that has a smeared model number, serial 21836 and input: AC 1:1 and has a blank spot for Hz. Both motors have a red and black wire for power.

Underneath a plastic cover there are two cylinders with wires going into them, one says "electro craft corp MCM moving coil tach generator PN 0100-00-015 ser 22031" this has two wires coming out of it (both black)

the other cylinder says
Summit engineering model
ST3-211-20
2500 Hz
Rotor 1 phase (output) 6.0 volts
Stator 2 phase (input) 12.0 volts
Spec code H.S.C.I.11BR 300* F 7.9/10
and has 6 wires coming out (yellow, yel/wht, red, red/wht, blue, black)

I've uploaded photos of the mill, motor and feedback electronics to: CNC Mill | Facebook

Thanks for any help you can give!

[Al_The_Man]

The 'moving coil generator' is a resolver.
Correction,: that is a DC tach, the one next to it is a resolver.
The motors are DC brushed and typically those types ran on around 65vdc.
Al.

[Greenbuggy]

The 'moving coil generator' is a resolver.
Correction,: that is a DC tach, the one next to it is a resolver.
The motors are DC brushed and typically those types ran on around 65vdc.
Al.

If the motor is DC brushed why does it say input AC 1:1? What does the 1:1 ratio signify?

Also how can I tell if a drive can take a resolver input? And what do the wires correspond to? I have no experience with resolvers or their hookup

[Al_The_Man]

You won't find many that take a resolver, most people with these put a encoder on the motor, if the motors have tach, these are no longer used on modern drives.
Not sure what the AC 1:1 is, never seen it before?
The four brush caps are a give-away for DC brushed motors.
Al.