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You can add an additional mains coil relay
accross
the lamp using the contacts to an input to give you state.
As i want complete automation i went the route
of
avoiding manual control using my own pcb mounted relays for cheapness. In a
kitchen make over i parralleled the oringinal switch this leaves manual
control
in case of failure but totally automated the under unit lights and cooker
hood
lights.
I am in the process of doing another room
again
this will have multiple lights but one set will have a manual control in a
cupboard, so no light switches visable at all.
All done with comfort, relays, pc & vb
code.
After initally burning my main comfort pcb the relays have 100% reliabily
operated around 8 lights for three months. No sleepy x10
modules.
I now find myself walking into areas i plan to
automate and wonder why the lights havent come on!
Approx costs per light X10 40 quid, CBUS
higher,
Relays 1.50
----- Original Message -----
Sent: Sunday, November 25, 2001 9:31
AM
Subject: Re: [ukha_d] Din Mounted
Mains
Relays for lighting control verses AD10s
Chris, if you wire them as two way switches
then
how will Comfort know what state they are in?
Does Comfort not have input ports like
Homevision, if so the override switches could be connected to the ports
then
Comfort can instruct the relays and track the status.
Not being a Comfort fan I don't know its full
capabilities.
Alancc
----- Original Message -----
Sent: Saturday, November 24, 2001
11:40
PM
Subject: RE: [ukha_d] Din Mounted
Mains
Relays for lighting control verses AD10s
Andrew,
Thanks for this. I figure the override needs to be achieved by
wiring
the relays (which are controlled by comfort only) with standard wall
mounted
rocksers as if they were all 2 way circuits. Does that make
sense?
chris
Chris
I'm about to embark on a large HA project and I'm not
touching X10 - just seems too unreliable and expensive (plus I'm on
3-phase).
Like you, I aim to use DIN mounted relays. But I'm going to
switch them using 12v or 24v signals from industrial control cards
mounted in a dedicated PC - so not quite your config. The main
problem I can see with your direct switching of the relays (I assume?) is
being able to override them from your Comfort system to simulate
occupancy.
Best regards
Andrew
I'm sure this has been discussed before, but I'd apreciate to
hear a fresh round of debate on this point. I'm doing a complete rewire
on the house - so there's two choices for control of lighting: X-10 or
Mains relays. Either way we're gonna use a star pattern as this provides
maximum longterm flexibility.
I figured LD11's are hard to beat for their versatility, but for
switching fluorescents, or applicances why spend £40 on an AD10 when I
can have DIN mounted relays for under a tenner? Of course a mains relay
like this will need to be CAT fived back to the HA interface, but aren't
relays more reliable than X-10 anyway?
So here are my three questions:
1. All things being equal in a star wiring pattern - would you go
for DIN mounted relays or AD10s?
2. Are there any obvious gotchas when hooking up manual (rocker
type) wall switches for local control if I go for the DIN
mounted relay option? Suppose
for example I need two way control for the lights on the
stairs?
3. My consumer unit and DIN rails are all in the boiler room next
to all the HVAC stuff. The boiler room is also very well sittuated for
running wires almost anywhere. However, Node Zero (Comfort, AV gear,
Data Hub, Telephony etc) is in a large cupboard in the centre of the
house. Given that I first need to make the choice between AD10's
verses DIN mounted mains relays - is there any particular advantage
to having Comfort located close to the DIN rails in the boiler room
rather than in Node Zero.
Thanks for your help
Chris
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