Subject: From: Date:

Re: [ECS] defeating "local on" Ingo Pakleppa Mon, 31 Aug 1998 01:14:25 -0400

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All you have to do is make sure that when the appliance is locally off,
some small amount of current can still bleed through - for instance, you
could simply install a lamp that sits parallel to the appliance but is not
turned off by the appliance's local switch. Really, any load will work - a
resistor may be another good choice. Make it large, and make sure that it
can survive the 110 or 220 volts! Let's see... My guess is that all you'll
need is one milliamp (this is a guess, not a fact!). At 220V, that requires
a 220k resistor. The wattage this resistor must withstand is: 220V * 0.001
= .2W (this will show up on your electricity bill!)

I would definitely choose a resistor that can withstand at least one Watt,
maybe even more. Also, keep in mind that if you find that one milliamp is
not enough, you'll have to decrease the resistance - and at the same time
need to allow for even higher wattage. You could also start with a 2.2M
transistor and see if that is enough.

There may also be a jumper to disable local control, I don't remember that.
Why don't you go to news:comp.home.automation and ask there? That's where
the wizards about this kind of thing are.

And, of course, keep in mind that any such modification would probably be
in violation of the NEC. Safety first!

Ingo

At 04:09 PM 8/30/98 -0400, Michael David wrote:
>Hi Folks!
>
>Does anyone remember how to defeat the "Local On Sensing" on an appliance
>module?  I seem to remember that there's a jumper on the PCB I can cut to
>disable this feature.
>
>Cheers!
>
>Michael David
>michael@michaeldavid.com
>

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| Ingo Pakleppa            mailto:ipakleppa@ecs.com              |
| Microsoft Certified Professional + Internet                    |
| Microsoft Certified Systems Engineer                           |
| Eagle Creek Systems, Inc., P.O.Box 888, Bonsall, CA 92003-0888 |
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