Re: [CAD_CAM_EDM_DRO] AC Servo Motors

Hi Wayne,

You're possibly getting mixed up. Previous discussions about 3 phase
are usually related to the spindle motor and VFD's (variable freq.
drives) These units allow single phase power (usually 230V) to
synthesize 3 phase for an induction motor - allowing the spindle speed
to be varied.

Your specified motors are probably suitable for a CNC conversion but
because of the high RPM's, will almost certainly require a belt/pulley
reduction. You will have to match the motors with a compatible (3
actually for X, Y, Z) motor drive (preferably made by Panasonic) in
order to provide controlled motion. (The drive will synthesize the 3
phases and take feedback, probably from an encoder on the motor.) Make
sure your drives accept step & direction if you are going that route.
Otherwise you'll need a system that generates a +/-10V analog control
signal. Most of the systems discussed here use step & dir as it is
easier for entry level systems.

Cheers, Peter

camerashy44 wrote:

>Probably a stupid question, but can AC Servo Motors be used for a mill
>conversion? The motors that I am specifically looking at are Panasonic
>MSM082A2UE, 3 Phase AC. 115 V, 4.3A, .75 Kw, 200 Hz, 3000 rpm. I
>expect that if one does not have 3 phase power (or a Converter) that
>these would be out of the question.
>Wayne
>
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