RE: Re: Krone blocks, alarm cable, cat5, etc etc

["Pete Church" <yahoo@xxxxxxxxxxxxxxxx>]

Lee

=20

I too am in this situation and actually have a =93Comfort connector block=
=94 on
my long list of things to research and buy.  Looking at the Krone blocks
they seem like quite the thing, although I would say that the 237D may be
overkill for Comfort.  Unless I=92ve misinterpreted the notes it sounds
lik=
e
the 237D has capability for 39 terminals with each terminal being able to
cope with 2 wires =96 so 78 wires!  Now I=92m sure the power supply in
Comf=
ort
will not be able to handle that many accessories, and Lee I didn=92t
realis=
e
you had built Buckingham Palace!

=20

I=92m thinking of the 237A which has =93through capacity for 20 pairs=94
i.=
e. 20
wires each side each commoned through to their terminal opposite.  Again
these can handle 2 wires per terminal meaning four wires per through pair.
If you start thinking about commoning these up with a fly wire looping
through adjacent terminals you could create your own 237D, but split it
int=
o
two (say +12V and 0V).  Each pair of terminals would be able to take 3
incoming wires (you lose one for the flywire) so each half of the block
would be able to handle 3x10 incoming wires, which sounds a lot more like a
Comfort installation.  If you=92ve got less wires you could even avoid
doubling up wires in terminals.

=20

Other benefit is that a 237A is =A34 whereas a pair of 237D are
=A329.=20=20

=20

I=92m about to order a couple.

=20

Pete

=20

_____=20=20

From: ukha_d@xxxxxxx [mailto:ukha_d@xxxxxxx] On Behalf Of
leewild80
Sent: 05 October 2009 13:36
To: ukha_d@xxxxxxx
Subject: [ukha_d] Re: Krone blocks, alarm cable, cat5, etc etc

=20

=20=20

Hi Ian

Have just been reading this page on the Canford site:
http://www.canford.
<http://www.canford.co.uk/Products/46-104-KRONE-237DB-Module>
co.uk/Products/46-104-KRONE-237DB-Module

It suggests they can be use with stranded cable, 7/0.15 or 7/0.2 are the
preferred sizes.
I *think* 7/0.2 is typical for alarm cable, so it sounds promising in
theory...

Lee

--- In ukha_d@yahoogroups. <mailto:ukha_d%40yahoogroups.com>
com, "ianh1000=
"
<ianh1000@...> wrote:
>
> Hi Lee
>=20
> I have the same challenge with my setup. These look a neat solution
but I
doubt they would be reliable with stranded cable, I guess you could tin the
strands with a little solder.=20
>=20
> Regards
> Ian=20
>=20
> --- In ukha_d@yahoogroups. <mailto:ukha_d%40yahoogroups.com>
com, Paul
Gale <groups2@> wrote:
> >
> > I would also be interested in this - I have a similar arrangement
of 3A
term blocks (lots!)
> >=20
> > Paul.
> >=20
> >=20
> >=20
> > > -----Original Message-----
> > > From: ukha_d@yahoogroups. <mailto:ukha_d%40yahoogroups.com>
com
[mailto:ukha_d@yahoogroups. <mailto:ukha_d%40yahoogroups.com>
com] On Behal=
f
> > > Of leewild80
> > > Sent: 05 October 2009 12:39
> > > To: ukha_d@yahoogroups. <mailto:ukha_d%40yahoogroups.com>
com
> > > Subject: [ukha_d] Krone blocks, alarm cable, cat5, etc etc
> > >
> > > Hi all
> > >
> > > I have a Comfort system, with inputs from a number of PIRs -
all of
> > > which share 12v and 0v connections.
> > > Comfort itself only provides single 12v/0v connections, so
currently =
I
> > > have a not-very-ideal setup where the various PIR wires are
twisted
> > > together & shared across several ways in a 3-amp
connector block, and
> > > in the other side of the connector block I have daisy
chained some
> > > wires across to common them together.
> > >
> > > It works but it's really not ideal, not only because it's
messy as
> > > hell, but screw connectors on stranded wires are not very
reliable.
> > >
> > > Have been wondering about a better solution for a while,
like
connector
> > > strips with leaf contacts and insulated combs for commoning
together.
> > >
> > > But then I happened across another thread on here where
people mentio=
n
> > > using Krone blocks.
> > >
> > > A bit of searching suggests a couple of Krone 237D blocks
might be an
> > > ideal and neat solution - they have a flying lead that I
could connec=
t
> > > to Comfort's 12v and 0v, and all the terminals within the
block are
> > > commoned together. They even come in red and black :)
> > >
> > > A few questions if I may:
> > > 1) Does this seem a sensible idea ?
> > > 2) I presume I can use the standard Krone-type punchdown
tool that I
> > > bought for wiring cat5 faceplates ?
> > > 3) Do the blocks work reliably with stranded 6-core alarm
cable ?
> > > 4) Do the blocks work reliably with the solid cores of cat5e
cable ?
> > > 5) And (dumb question) - "normal" (237A) Krone
connectors - are
> > > terminals on both sides of these linked across so they act
just like =
a
> > > connector block ?
> > >
> > > Thanks for any help !
> > >
> > > Lee
> > >
> > >
> > >
> > > ------------------------------------
> > >
> > > Yahoo! Groups Links
> > >
> > >
> > >
> > >
> > >
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> >=20
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>





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