Re: Geovision Automation

["Frank Mc Alinden" <frankmc@xxxxxxxxxxxxxxxx>]

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

HTH
Frank



----- Original Message -----
From: "Marc Fuller" <groups@xxxxxxx>
To: "UKHA" <ukha_d@xxxxxxx>
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
>
> ------------------------------------
>
> **** Sponsored By http://www.Berble.com ****
> ****       Computers You Carry          ****
>
>
>
>
>


------------------------------------