Re: [CAD_CAM_EDM_DRO] Re: Pixie error connection

Hello Keith,

> I gave it a try and connected +5v to the + of the relay

The +5v needs to come from the pixie too. Is that where you got it?

If you are using +5v that is not from the pixie then you may need to tie
the +5v power supply ground to the pixie ground.

Can you point me to data sheets for the pixie open collectors and for
your solid state relay control? If I can determine the capability of the
open collector and the pixie connector pinout and the requirements for
the solid state relay, I should be able to make a more specific
recommendation.

Tom Hubin
thubin@...

*************************

> --- In CAD_CAM_EDM_DRO@yahoogroups.com, "Graham Stabler" <grezmos@...>
> wrote:
> >
> > --- In CAD_CAM_EDM_DRO@yahoogroups.com, "toolspindoctor"
> > <clarkfamily5@> wrote:
> > >
> > > Graham,
> > >
> > > I am trying to drive a Dayton Solid State Relay, Input DC, Maximum
> > > Input Voltage 32 VDC, Minimum Input Voltage 3.5 VDC, Output DC,
> > > Minimum Output Voltage 0 VDC Grainger part #5Z950. Probably too
> much
> > > draw and it drops the Pixie to 0volts each time I connect. Must be
> a
> > > way to place a resistor...
> > >
> > > Thanks,
> > > Keith
> >
> > In mentions opto coupling so am I right that the "coil" has a
> polarity?
> >
> > If so connect the + to 5v and the negative to the pixie. That way
> > when the pixie pulls the output low the led in the opto will be
> energized.
> >
> > Connecting the relay the other way will tend to pull the pixie down
> to
> > ground and cause the fault.
> >
> > Please apply a pinch of salt as I have not used SS relays but I
> think
> > I am right.
> >
> > Graham
> >
>
>