Re: Multiple magnets, one zone, EOL resistor. Never works!

Nerd,

Seriously, it looks like, from the feedback here, to retrace your seemingly simple problem and isolate and rebuild the circuit. I am sure you will kick yourself when you find the problem

For all the effort of everyone's help and suggestions; let us know what you find was the problem.

BobbyD

Total nerd wrote:

This never seems to work properly for me.  Here's what I do... am I
doing something wrong?
I want to secure, say, 4 windows with magnets.  I take two wires from
the panel -- a green and yellow.  The green wire goes uncut allllll the
way to the last magnet and I place an EOL resistor there and join it
with one lead on the last magnet.  The yellow wire gets cut at each
window and a magnet is placed at each cut by simply splicing in the two
leads of the magnet.  This is what I would call a series circuit.  Now,
if I open any window, the circuit is open.  If all windows are closed,
all magnets are closed and the circuit is closed with an EOL resistor
reading 2.2K ohms.  I've checked this with a meter.  All I have to do
is plug the green and yellow into a zone and program the panel that
it's a NC zone with an EOL resistor on it.  Why does it always think
it's open?  If I take the EOL resistor out and program the zone to have
NO EOL resistor then of course it works.  What the heck am I doing
wrong??



.

Relevant Pages

  • Re: Multiple magnets, one zone, EOL resistor. Never works!
    ... The green wire goes uncut allllll the way to the last magnet and I place an EOL resistor there and join it with one lead on the last magnet. ... If all windows are closed, all magnets are closed and the circuit is closed with an EOL resistor reading 2.2K ohms. ...
    (alt.security.alarms)
  • Re: Multiple magnets, one zone, EOL resistor. Never works!
    ... You couldn't possibly be joining a lead to a magnet! ... If all windows are closed, ... | all magnets are closed and the circuit is closed with an EOL resistor ... | it's a NC zone with an EOL resistor on it. ...
    (alt.security.alarms)
  • Re: Need help with intermittent circuit failures - JK Flip Flops
    ... The circuit works fine most of the time, but it's unreliable, ... the relay would do nothing - only the motor would stop for the 1 sec. ... what happens when the magnet passes the switch again? ...
    (sci.electronics.basics)
  • Re: Wiring
    ... together at a time you will never get a closed circuit because the ... If there are two pairs of wires at the window there's a good ... This assumes the zone is a closed loop (opens on alarm) which is ... magnetic switch, and the magnet is drilled into the window itself, ...
    (alt.security.alarms)
  • Re: trying to make an electromagnet
    ... > long while means that the shortest piece of wire you can wind on the ... I have built a circuit which sends a short pulse through the ... magnet whenever an LDR goes from light to dark (i.e. to water at the end ... What i am planning to do is to split the coil i have into 4 parts of about ...
    (sci.electronics.basics)
Loading