Re: Opto 22 Lags

Would it help to reverse connections?? or does a triac work similar
to a bridge rectifier?

--- In CAD_CAM_EDM_DRO@yahoogroups.com, "Steve Stallings"
<stevesng@n...> wrote:

>
> Opto 22 relays come in different flavors for AC, DC
> and different voltages. Is it possible that the
> voltage at the control jack of your plasma cutter
> is low voltage DC and you are trying to control it
> with an AC Opto 22 module? The AC modules have a
> Triac in them that will stay on forever as long
> as the load current is sufficient to sustain them.
> With a low current DC load they may eventually drift
> to the off condition.
>
> Regards,
> Steve Stallings
> www.pmdx.com
>
> --- In CAD_CAM_EDM_DRO@yahoogroups.com, "bertmantx"

<bertmantx@y...>

> wrote:
> >
> > Can anyone tell me why my opto 22 relays are so slow to turn off??
> > torch continues to arc 2-5secs. after signal quits.
> > I'm hooking port pin 9 to "+" and gnd pin 18 to "-" and torch to
> > contact symbol.