Rebuilding Plasma CNC

Those machines were advertised as using servo motors when they started selling, but i can not see encoders on them, so they just might be steppers.
To check, turn them by hand and see if you can feel small steps while turning.
And you you will have to rewire that connector.

Tommy, aren't the wires coming out of the side of the motor for the encoders?

In the meantime, have a look at Bob's plasma build forum.linuxcnc.org/plasma-laser/36667-bob-s-plasmac-build
as it shows a servo system with the required hardware. Hopefully you can repurpose what you have.

As for wiring, nothing will be plug and play. You will need to rewire but you should be able to retain the connectors you have now you know what they are.

I'll leave it to others better qualified to help with the servo motors.

You might want to look at this thread,

forum.linuxcnc.org/plasma-laser/36299-pl...ntrol-panel?start=40

I posted my wiring diagram for my new controller I built and some pictures of the finished controller.

tommylight wrote: Those machines were advertised as using servo motors when they started selling, but i can not see encoders on them, so they just might be steppers.
To check, turn them by hand and see if you can feel small steps while turning.
And you you will have to rewire that connector.

Tom, I would be will to bet that the motor is the black part of the frame and the silver part is the cap for the encoder. They will most likely be DC servos. My old DC servos look similar.

Could be but we are just shooting in the dark here.
And his motors do not have brushes. And yours have encoders on the back. And there are no shielded cables on that big ATX connector.
Still could be that the brushes and encoder are inside that silver cap, but i doubt it, encoders would go to hell in a hand basket rather quickly from the dust produced by those brushes.
Anyway, if they are DC servos, there are some rather cheap drives that can be used, and i think Mesa has something suitable and a single board for both motors if i am not mistaken.

I agree he should test them first by hand to determine the type of motor,

But just thinking out loud based on this AC servo I have on my desk, the encoder is mounted behind the motor frame with a cap cover.