RE: CBUS Control Bus wiring topology

[Mike Griffiths <mike@xxxxxxxxxxxx>]

Hi Neil
I've got 108 separate circuits, 30 control circuits and they all go back to
3 central points
Linked back to node 0 (but not connected)

LOTS                 LOTS             LOTS              LOTS
N  YYY                  YYY              YYY               YYY
O   x--------------------x----------------x-----------------x
D  ---------------------I                I                 I
E  --------------------------------------I                 I
0  --------------------------------------------------------I
Believe me it is the only way to wire C-bus control
I have also run some spare unused feeds to Cupboards/Lofts/etc. Etc.
I use Krone blocks to connect it all to together
Each cable is numbered

It is SO EASY to
a) Set up the system
b) Fault find
c) try new things

Multi Star back to Node 0 and never complete the loop
Mike
-----Original Message-----
From: ukha_d@xxxxxxx [mailto:ukha_d@xxxxxxx] On Behalf Of Neil
Fuller
Sent: 04 January 2009 19:37
To: ukha_d@xxxxxxx
Subject: Re: [ukha_d] CBUS Control Bus wiring topology

Thanks Ben (and others).

I'm still undecided!!

I can see that the easiest and certainly the cheapest method is to daisy
chain but as I come from a service and maintenance background, I'm
always thinking about future fault finding when I'm planning an install.

I guess as long as I document cable runs etc, any faults should be
fairly easy to locate.

If I home run all the points, presumably, I'd patch to another patch
panel where the patch panel punch downs are commoned together and I
would take a single patch cable to the CBUS panel? I guess I could use a
Krone block to do the same thing, although it would all be a bit of a
mess in the box!!

Before everyone asks, yes, I'll take pictures!!

Cheers

Neil

ben addison wrote:
>
> Hi Neil,
>
> I have always run my c-bus network in the form of a ring, as ben has
> stated.
>
> I only ever connect one end of the ring so that I don't form a loop.
> This is
> the easiest, quickest and best way to wire the network.
>
> You only have 2 cables at any one point to connect. If you do get a
> break in
> anyone of the cables you can feed the ring from both ends.
>
> I do star off now and then if a client decides to add an extra point.
>
> I have 2nd fixed systems for clients where they have star wired all
there
> points. To connect them all together I have just used there patch
panel.
>
> If you would like any help just let me know or send me some plans to
look
> over?
>
> HTH
>
> Thanks
>
> Ben Addison
>
> www.clipsalcbus.co.uk <http://www.clipsalcbus.co.uk/
> <http://www.clipsalcbus.co.uk/>>
>
> 07889845712
>
> _____
>
> From: ukha_d@xxxxxxx <mailto:ukha_d%40yahoogroups.com>
> [mailto:ukha_d@xxxxxxx <mailto:ukha_d%40yahoogroups.com>]
On
> Behalf Of
> Ben McCormack
> Sent: 02 January 2009 14:00
> To: ukha_d@xxxxxxx <mailto:ukha_d%40yahoogroups.com>
> Subject: Re: [ukha_d] CBUS Control Bus wiring topology
>
> Neil
>
> Ben Addison installed mine and went for the daisy chain approach. I
> also read all of the documentation and cannot see any mention of home-
> running then all. I am sure it would work but would be a nightmare to
> terminate. Not sure of any benefits apart from troubleshooting?
>
> You could also do a couple of trunk runs from the node zero to
> specific locations in the house and then fan out from there?
>
> Ben
>
> On 2 Jan 2009, at 13:43, Neil Fuller wrote:
>
> > Hi All
> >
> > I'm just planning the install of my new CBUS kit and can't decide
on
> > the
> > best topology for the control bus wiring.
> >
> > Whilst it's free topology (avoiding loops), is it better to
home-run
> > all
> > the points (switches, PIRs etc) or to daisy chain them?
> >
> > Instinct tells me to home-run them as it will be much easier to
fault
> > find but I'm not sure about how to connect them all up at the
panel.
> >
> > Clipsal do supply a patch panel of sorts but they seem to be
aimed at
> > the commercial market and as rare as hens teeth!
> >
> > Would bunching the cables together in a Klippon or even Chock
Block
> > connector work or is there a neater solution?
> >
> > TIA
> >
> > Regards
> >
> > Neil
> >
> >
>
> [Non-text portions of this message have been removed]
>
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>
>

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