Re: CBUS relay units - change-relay difference?

["Paul Robinson" <ukcueman@xxxxxxxxxxx>]

Change over relay has 3 connections per channel, labelled NC, NO and C.

When the channel is off, NC is connected to C
When the channel is on, NO is connected to C

So you either wire it as input power to C and output on either NC or NO, or
you have two
inputs on NC and NO with the output on C.

The voltage free relays have 2 connections per channel, marked A and B.
They are either
connected or not depending on the cbus setting.

Paul

----- Original Message -----
From: "slashcomfort" <yahoo@xxxxxxx>
To: <ukha_d@xxxxxxx>
Sent: Wednesday, November 16, 2005 7:49 PM
Subject: [ukha_d] CBUS relay units - change-relay difference?


> Hi
>
> whats the difference between
>
>  4-Channel Voltage Free Relay, 240V AC, 10A, without power supply
>
> and
>
>  4 Ch Voltage Free Change Over Relay, 240Vac, 50/60Hz, 10A, No power
> Supply
>
> as in the change-over relay? is this a double poll? (as in you either
A
> or B has power?)
>
> thanks in advance
>
> Ade




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