Re: Pixie error connection

I gave it a try and connected +5v to the + of the relay and Pixie
error to the - of the relay and it does not trip the relay so I assume
it is still going to 0 volts. Guess I'll need to go the transistor
route...
Thanks
Keith

--- 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
>