Re: [CAD_CAM_EDM_DRO] LPKF 2d drill

"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