Re: [CAD_CAM_EDM_DRO] LPKF 2d drill

Hi Jerry, Zoran,

There you go! Find the driver chips, and follow the app notes! I'm
still curious about the motors, and the driver chips. Know any URL's?

Alan KM6VV


Jerry Kimberlin wrote:

>
> "Zoran A. Scepanovic" wrote:
> >
> > Hi Alan,
> >
> > I just received from a friend a scanned copy of a fax with schematic for one stepper channel. From that poor copy I've figured out that tyhe > steppers really are 5 phase motors, and possibly are Oriental Motors production. Scratched chip has a marking either PMM... or HMM... or > something simmilar and, logically, it generates the 5 phase signals for motor.
>
> I've got a flyer of some age on the Vexta 5 phase steppers. This
> flyer is for the mini-series. Typical motor numbers are
> PH533-NA(B), for the smallest and PH554-NAA(BA) for the largest.
> The driver number is UDX5107N. If these numbers make any sense
> vis a vis what you have, then Oriental Motor made them. Oriental
> made these under licence from Berger-Lahr actually, so there may
> be other licencees also.
>
> JerryK