Four (4) State Zone Wiring -- ELK M1G

[rexwilson]

what makes the difference is the conditions under the PIR decides to open one of the switches, and the resulting zone reistance that the panel sees. I think we might be at the point where words are failing us, and I might suggest you just rig up a PIR right next to the panel and do some experimenting and watch how it responds.

 

[RichardU]

Thanks again.

 

[apostolakisl]

Do you have an extra relay available (in other words, do you have a relay board at all, and if so is one not used)?
Do you have an unused zone?

If you have both of these things, you are only a jumper wire and two programs away from making this work. Run the wire from the NC relay contacts to the zone, then set the zone up as an alarmed zone. Write a rule that turns the output (relay) on if it detects a short and another if the wire is cut.

And, once done, you can use this same relay/zone to cause an alarm based on anything you want from a rule.

 

[RichardU]

Thanks for the idea Lou (I'm following this topic, but for some reason was not notified of your post. Just happened to see it.)

I'll set up the PIR as a Non-Alarm. Write a rule to detect short. Write a rule to detect line cut. Both those rules will turn on an output. That output will be wired to a zone set up as a Tamper. (I have lots of free zones and outputs, but can use one output/tamper zone for multiple PIRs).

Just did it. Works perfectly. Thanks again.

 

[apostolakisl]

That output will be wired to a zone set up as a Tamper. (I have lots of free zones and outputs, but can use one output/tamper zone for multiple PIRs).

You can't wire an output directly to a zone. You need the output to control a relay, then the zone is wired to the NC contacts. You can use an Elk relay board or just any 12vdc relay whose coil doesn't exceed elk specs.

If I am wrong on this, someone please let me know. Outputs put out 12v and zones are looking for 12v, but I suspect outputs and zones aren't on the same circuit which would result in current flowing somewhere it shouldn't and maybe causing damage. Or maybe not. I know for sure you won't do any damage using a relay.

I know on a CAI webcontrol board you can do this. Outputs produce 5v when on and close to ground when off. So the equivalent on an Elk would be to plug 12v output into the "hot" side of a zone. When the output is on, it would be 12v output "butting heads" with 12v from the zone. Thus no current and the Elk would read "open". When the output is off, if it closes to ground, the zone's current would backflow into the output and the zone would look "closed". But I just don't know if Elk outputs close to ground when off and if they do, is it safe to back current them the 7ma or whatever it is Elk zones put out.

 

[RichardU]

Right. I'm using an M1RB (relay board). So outputs 9-16 are connected to relays. Thanks again.

 

[Del91574]

An additional relay isn't needed, you're just going to change how the resistors are wired and how to use DEOLR's.

Personally, assuming a single 4 conductor cable was run, why not just split the tamper and alarm relay and wire the detetction circuit as 3 wire and use the free conductor for the tamper.