Re: X10 Status Holy Grail with Netiom xAP

["Frank Mc Alinden" <frankmc@xxxxxxxxxxxxxxxx>]

Hi Tim

> I thought Frank developed some sort of CT-device for use with his zone
> probes, but that may have just detected on/off, rather than "dim
level".

No what i done was connected a superbright white led to the output of  the
LD11 and monitored it with an led probe . In testing it was able to monitor
the ON /OFF (no level) status down to a very low level...

HTH
Frank


----- Original Message -----
From: "Hawes,Timothy Edward (GEG)" <haweste@xxxxxxx>
To: <ukha_d@xxxxxxx>
Sent: Wednesday, October 26, 2005 3:44 AM
Subject: RE: [ukha_d] X10 Status Holy Grail with Netiom xAP


> Richard,
>
> In theory the AD modules would be easy enough, a conventional coil
relay
> or solid state relay wired across the AD output which then closes a
> contact when the 240V output is ON. The same contacts are wired to
> NetIOM inputs. The only caveat is that the AD modules leak a small
> current across the output even when OFF to detect when something is
> plugged in. You'd have to choose your relays carefully to ensure they
> didn't falsely close when the AD was actually off.
>
> For the LDs you might be better off with a current transducer - a
device
> that measures the amount of current flowing through a circuit. These
are
> available with 4-20mA and 0-10V outputs as they're used frequently in
> industry. They're not particularly cheap though. What type of analogue
> input does the NetIOM accept?
>
> I thought Frank developed some sort of CT-device for use with his zone
> probes, but that may have just detected on/off, rather than "dim
level".
>
> HTH,
>
> Tim.
>
>> -----Original Message-----
>> From: rb_ziggy
>>
>> OK, this could all be horribly wrong but I had a thought when
>> thinking about that knotty problem of knowing the status of
>> X10 (mainly AD & LD) units that are controlled both across th
>> powerline but also with momentary switches...
>>
>> Can the power output side of the AD/LD unit be used and then
>> interfaced with, say, an xAP enabled device (such as a NETIOM)?
>>
>> For example. The NETIOM has 16 (5v) inputs for a very
>> reasonable price.  Is there such a thing as a cheap solid
>> state device that can be wired in parallel with the live &
>> neutral output on the AD/LD to 'measure' the power output and
>> translate this to a 'value' (0/5V) that the NETIOM could
interpret?
>>
>> You may gather that my electronics experience is a bit
>> limited, to the extent that I don't know what cheap power
>> measurement device is available or would work with the triac
>> 'chopped' output from a LD unit (I'm guessing it might be
>> easier for the AD units).
>>
>> Also, for LD it would be useful to get some sort of 'level'
>> of power but how to do this on digital inputs to the NETIOM,
>> I have no idea (clearly would be possible for the analogue
>> inputs but there are 'only' 4 on the NETIOM). But as a
>> minimum it would be good to know an LD unit is on (at any
>> level) or off.
>>
>> Also, I guess a bit of isolation might be in order to stop
>> the possibility of 240V being passed through to the low
>> voltage device!
>>
>> I'd welcome thoughts.  Any milage in this or am I barking?
>>
>> Anyone fancy a go?
>>
>> Cheers
>>
>> Richard
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