Re: Geovision Automation

[Marc Fuller <groups@xxxxxxxxxxxxxxxxxx>]

Oooo nice. Thanks Frank, will take a look at them now !

cheers

Marc

Frank Mc Alinden wrote:
>
>
> Hi Marc
>
> I would recommend using Omron G2R 12v relays...You can get them with
built
> in led and also suppression diode....I use them for switching 240v
> stuff..What i like about them is the low voltage stuff (coil
> connections) is
> on one side and the 240v stuff (contacts) are on the other side so
good
> physical isolation......heres a link on some info.....I get mine from
my
> local Electrical wholesaler here in Oz.......
>
> http://www.engineeringtalk.com/news/omr/omr162.html
> <http://www.engineeringtalk.com/news/omr/omr162.html>
>
> HTH
> Frank
>
> ----- Original Message -----
> From: "Marc Fuller" <groups@xxxxxxx
> <mailto:groups%40serenitymeadow.com>>
> To: "UKHA" <ukha_d@xxxxxxx <mailto:ukha_d%40yahoogroups.com>>
> Sent: Thursday, April 17, 2008 12:46 AM
> Subject: [ukha_d] Geovision Automation
>
>  > Hey guys,
>  >
>  > I'm after some help with wiring up the NET I/O card with some
lighting.
>  >
>  > Specifically I am having problems locating a suitable relay. I
am trying
>  > to control some perimeter lighting. I'm not totally sure of the
>  > voltage/amps yet but let's assume the lights are running at 240v
and
>  > 16amps.
>  >
>  > So, I don't want to put that load through the NET I/O card so I
will
>  > need a relay. From what I've read on the NET I/O card it can
switch up
>  > to 12vdc up to 1amp or 125vac up to .3amp. Is that correct ? or
does is
>  > specifically need to be 12v 1am or 125v .3 amp ?
>  >
>  > So let's use 12vdc as an example. So I need a relay that when I
supply
>  > 12vdc, it switches the 240v contacts. I think this also means I
need a
>  > SPST relay. Correct ?
>  >
>  > So how do I wire that into the NET I/O card ? Do I need a 12vdc
power
>  > supply that I then feed into the NET I/O card which will then
pass that
>  > voltage on ? e.g the 12vdc positive goes straight to the relay,
then the
>  > 12vdc negative goes to either the GROUND or OUTPUT PIN1 of the
NET I/O
>  > card. If I put the 12vdc negative to GROUND, then OUTPUT PIN1
goes to
>  > the negative coil contact on the relay. Thus when the NET I/O
card
>  > activates the output, the 12vdc negative goes from GROUND to
PIN1 and
>  > thus activates the relay.
>  >
>  > Phew.. that's a lot to take in for a non-sparky like myself. Is
this all
>  > correct ? If it is, does anyone know of suitable relays ?
>  >
>  > I must admit I'm a bit lost on all this. I will point out though
that I
>  > won't be wiring the relay myself, a sparky will be doing it but
he
>  > doesn't understand what I need from him, so I am trying to get
it
>  > straight in my head before I pass it on to him.
>  >
>  > Any help much appreciated
>  >
>  > Marc
>  >
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