Re: [CAD_CAM_EDM_DRO] 3 phase stepper

Dave,

I don't think that you will find any three phase drivers except from SIG -
positec. I am using three of their motors and drivers that I bought from
SIG - positec.

Bob Campbell

----- Original Message -----
From: "dave engvall" <dengvall@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Tuesday, February 20, 2001 9:09 AM
Subject: [CAD_CAM_EDM_DRO] 3 phase stepper


> List:
> Help!!
>
> I have just acquired some motors off eBay that
> were listed as servo motors but turn out to be 3
> phase steppers. SIG - positec VDRM3910/50 LWB ,
> 325 V 2 A steppers. 4 Nm torque out to about 10 K
> steps/sec. 1000/2000/4000 steps/rev.
> Max start freq of 5 KHz (no load) and max freq of
> about 50 K.
> Does Mariss ( or someone else) have anything that
> will drive these or am I stuck with the german
> drives at much higher prices ( $800-1500),
> BTW the spec sheet lists voltages of 35, 130 and
> 325 V with appropriate changes in current.
>
> Planned application is a Jet 13 x 40 lathe ( x and
> z ) using ball screws and shaft encoders on the
> ball screw.
>
> I'm not in gobs of $$ so can ignore these drives
> if using them is not practical.
>
> TIA
>
> Dave
>
>
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