Re: [CAD_CAM_EDM_DRO] LPKF 2d drill

Hi Zoran,

I wonder if you have something like 5-phase motors? The L298's normally
handle two windings each. Three would give you 5 phases, plus a spare.
The KPKF is a good PCB mill, from what I've heard. Did you get PC
software for it? Sounds like the "scratched up" chip develops the 5
phases from (hopefully) a step and a direction line. Might be
different! Might just be a buffer. Does it connect to the PC with a
parallel port? They might also be driving each phase themselves, much
like what we call 4-phase drive! Very interesting stuff! A schematic
would be great, but I'll bet you could figure it out! I've long wanted
such a machine. I'd like to here more from you! Vectra makes 5-phase
motors.

Alan KM6VV


"Zoran A. Scepanovic" wrote:

>
> Hi all,
>
> I just got from a friend a CNC drill as in the subject. It is an PCB drilling machine with only two axes (X & Y, Z is driven by an electromagnet).
> The motors that are fitted onto this machine are steppers, but with no markings on them. They have 10 wires, and the wire pairs are as follows:
>
> gray + black
> blue + red
> violet + brown
> green + orange
> yellow + white
>
> (could not measure the resistances of the windings cause my DVM just broke)
> The motors are 59mm x 108mm in size.
>
> The drivers are consisted of an unusualy scratched chip connected to 3 (three) L298 (2 1/2).
>
> Any info on this motors woud help.
>
> Best regards,
>
> Zoran A. Scepanovic
> ZASto@...
> http://zasto.bizhosting.com
>
> [Non-text portions of this message have been removed]
>
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