Re: [CAD_CAM_EDM_DRO] AC Servo Motors

We had those on some robotics where I used to work. IIRC they were fast,
powerfull for their size, realiable but way expensive. check out how
they interface, step/direction is cool, serial is going to be a problem.
When you get into the multi phase drives its a matched pair motor/drive
thing, no mix and match between vendors.

Mark

Jon Elson wrote:

>
> 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.
>>
>>
>
> Sure. But, you need a matching servo amplifier for these motors. 3 phase
> line power is irrelevant. What you need is a servo amplifier specifically
> designed for driving 3 phase induction servo motors in general, and being
> able to drive this motor specifically. If you check with Panasonic
> (National Electric in countries other than the US) they probably list
> between $2K - 3K. A VFD could drive these motors, but not in a
> positioning application. An AC servo amp is a special case of a VFD,
> designed with the more intricate control laws to handle positioning
> of such a motor. Where it gets tricky is that every manufacturer has
> a different way of hooking up the encoder that is required on such a motor.
> Unless you have a lot of technical details (which the companies usually
> never give out) it is almost impossible to hook up a Kolmorgen servo
> amp, for instance, to Panasonic motors, due to the difference in the
> encoders.
>
> Jon
>
>
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