Re: DIN Enclosure for CBus modules

["Neil Fuller" <neil@xxxxxxxxxxxxxxxxx>]

Gareth

>>I don't remember where I got enclosures from

These sound like Sarel enclosures. You can get them from Wholesale Fittings
(WF) in Guildford.

We buy loads of kit from WF so if you want a good price, drop me a line off
list. You would need to buy some top hat DIN rail and a back plate.

I think a 600x600 metal enclosure is about £70, the back plate is about £15
and the DIN rail is about £5 for 3 metres. Much cheaper than an equivalent
dedicated DIN enclosure.

Cheers

Neil
----- Original Message -----
From: "Paul Robinson" <ukcueman@xxxxxxx>
To: <ukha_d@xxxxxxx>
Sent: Saturday, April 09, 2005 1:37 PM
Subject: Re: [ukha_d] DIN Enclosure for CBus modules


>
>>> You may not want the PCI in there. That's because legally, the
box
>>> should
>>> only contain
>>> cables whose sheathing is rated to 240V. With a PCI, you'll
end up with
>>> a
>>> serial cable in
>>> there. You could make it out of cbus pink cat5 - that would do
the job
>>> (can even use the
>>> RJ45 RS232 socket). But then you might get confused about what
was cbus
>>> cable and what was
>>> serial cable...
>> Thats a good point. Prob a good idea then for my to put the pc
interface
>> in Node 0 instead.
>>
>> So, how do you go from your cat5 to the pink ? I was assuming I
would
>> terminate all into a patch panel as normal, then have another
patch panel
>> that they all patch into (!) - but this 2nd patch panel has the
>> connectors
>> all wired in parallel (ala telephone, infrared). Then one of those
ports
>> carries the pink to the DIN cabinet ?
> Instead of taking my cat5 that carries cbus into my rack with all the
> other cat5, I've
> taken it to a plastic box next to the dimmers (although it could have
been
> anywhere). All
> those cat5 are joined together in parallel (remember: only +ve and -ve
> legs to care about
> here rather than separately terminating all 8 cores).
>
> This is *not* structured wiring. I decided that the light switches
were
> dedicated to cbus
> and so would never want to patch them to something else.
>
> Where I have all the cbus cat5 connected in parallel, I also take a
cbus
> feed from that
> into the back of a 4-way RJ45 socket, wiring up the back of the RJ45
> sockets into the cbus
> as well. I then plug in the PCI using the short pink patch cable they
> provide with it. To
> connect to the dimmers, I used pink cat5 and put plugs on both ends.
> (NOTE: I use 568A for
> cbus stuff, [and 568B for everything else] otherwise the colours they
> specify for the +ve
> & -ve cores will be wrong)
>
> This just plugs into one of the dimmers, and then you loop the cbus
from
> dimmer to dimmer.
> This plastic box with the cbus cat5 junction is also where I've taken
my
> cbus feed out to
> comfort (using pink cat5).
>
> I didn't want cat5 carrying cbus in with cat5 carrying other stuff for
> several reasons:
> (1) because of keeping it SELV - ie away from an earthed rack. I have
> light switches in
> the bathroom.
> (2) because my racks already busy enough, and if I can move something
out,
> it helps
> (3) because I'm happy to dedicate the light switch cat5 to cbus - so I
> didn't mind not
> using structured wiring for this cat5, though I have for everything
else.
> (4) because it's cbus. It's only got a +ve and -ve - it doesn't need a
> patch panel
> (5) The box that houses my PCI doubles up as housing the cbus cat5
> junction
>
>>
>> And what enclosure do you use ?
>
> I used 3 x metal enclosures, 500x600 in size, but nothing inside.
Bolted
> ply to the rear
> and screwed in DIN rail where I wanted it. Borrowed a sparky friend's
2"
> metal hole cutter
> to cut 2" holes in the sides of the enclosures (top and middle)
so cables
> can go between
> enclosures. The boxes have a 2"-3" gap between them, with
the holes
> bridged by 2" diameter
> metal cylinders designed for the job.
>
> As I said (offlist) the middle box has all the lights from cables
going to
> it. Nothing in
> here but 2 x incoming 16A MCBs and lots of DNI rail connectors. This
is so
> I can do a
> local patch if and when I want to change how lights are allocated to
> channels.
>
> Outside boxes have 4 dimmers plus MCBs in them.
>
> I don't remember where I got enclosures from - my sparky friend
pointed me
> in the
> direction of a supplier in Banbury I think. I have 5 altogether. The
main
> 3 in node zero,
> one in the garage and one next to my consumer units. Total of 8 x 8
> channel dimmers, 1 x 4
> channel dimmer, 1 x 12 channel relay and 1 x 4 channel change over
relay.
>
> Paul
>
>
>
>
>
>
>
> Yahoo! Groups Links
>
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