Re: Vexta 5 phase drive hookup

I did open it up to check it out. The only switch I see on the unit
is a half/full step switch. I ran every combination through the CW
and CCW inputs and could not get any movement in the opposite
direction. It is still on my bench and I may take the time to scope
it out to verify the surface mount opto. If bad, will replace if a
similiar part one can be found in Digikey. My junk pile is the
corner of the room with the other non-working stuff. It will sit
there collecting dust until I find the time to look at it again.

Jim

--- In CAD_CAM_EDM_DRO@yahoogroups.com, Jon Elson <elson@p...> wrote:
>
>
> jm_fong wrote:
>
> >Hi Jon,
> >
> >I found a hookup diagram that converts 10 wire Berger Lahr to 10
> >wire Vexta color code. From there I was able to figure out which
> >sequence to hookup to the 5 terminals on the driver. I can step
the
> >motor CCW, but not CW. The H.off input works, that disables CCW
> >input if I enable it. My guess is the CW has a bad opto chip. It
was
> >a free ebay find so loss but some time spent on the bench. The
TIM
> >has an LED and that seems to light up every 5 pulses like you
say.
> >
> >This one goes into the junk pile.
> >
> >
> What? You go all the way to diagnose the problem, then you chuck
it?
>
> You should note some models of the Vexta drivers have a switch
that selects
> for step/direction or CW/CCW mode. I think this switch is labeled
> 1P / 2P. I think you may have this set for the step/dir mode.
Try it
> as a step/dir drive, it probably works fine.
>
> Jon