Garage Door Magnetic Closure & HAI

[Anthony A.]

i just purchased a a secolarm SM-226L-3 garage door magnetic closure to be able to monitor if its open or closed.
http://www.smarthome.com/7455B/Garage-Door...-226L-3-/p.aspx

my intention is to connect this as a zone on my HAI omnipro2 controller and have it set that when the zone is "secure" the door is closed and "not ready" is open. the unit has 3 wires - black, red and green. this unit can be either normally open or normally closed.

the insturctions say that:

normally open = green wire and black (common) - to be used for closed circuit systems
normally closed = red wire and black (common) - to be used for open circuit systems

i assume that my system is closed circuit, so i guess i need to use the green and black wire to the zone input on my omni, correct?
and what is the "common" wire, is it + or -?



secondly, i had my system installed by someone and each zone (contacts) is wired with a 4-wire cat3 cable (black, red, green, yellow). all the zones are wired as followed: yellow wire = +, green wire = -. (black and red not used). so keeping this in mind, how do i wire this garage contact to the controller and which wires do i connect with?


thanks in advance!

 

[apostolakisl]

the common wire is the wire that is "common" to both circuits. Usually the common is a ground that allows the circuit to close when connected to the "hot" wire. In this situation, you choose whether to connect the n.o. wire or the n.c. wire to the HAI's "hot". You get to pick whether you want the circuit closed when the door is closed (n.c.), or whether you want the circuit closed when the door is open (n.o). I don't have HAI but I imagine that if it is like most systems, the best choice would be to have the circuit closed when the door is closed or "secure".

So you probably want to connect your cat 3 yellow to red secoalarm, and green alarm to black secoalarm. The result of this should be that the HAI sees a closed circuit when the door is closed.

 

[fabriziojoe]

I would set it to NC with a 1000 ohm EOL resistor.
Be sure to use the screws that came with the contact as I have seen wacky things happen with non-oem screws.

 

[Anthony A.]

You get to pick whether you want the circuit closed when the door is closed (n.c.), or whether you want the circuit closed when the door is open (n.o). I don't have HAI but I imagine that if it is like most systems, the best choice would be to have the circuit closed when the door is closed or "secure".

So you probably want to connect your cat 3 yellow to red secoalarm, and green alarm to black secoalarm. The result of this should be that the HAI sees a closed circuit when the door is closed.

the instruction say that "normally open" (green and black) is to be used for closed circuit systems, whereas "normally closed" (red and black) is for normally open circuit systems. is this incorrect? or should i just stick with the N.C. wiring as you suggest and ignore the "open circuit system"?

 

[apostolakisl]

You get to pick whether you want the circuit closed when the door is closed (n.c.), or whether you want the circuit closed when the door is open (n.o). I don't have HAI but I imagine that if it is like most systems, the best choice would be to have the circuit closed when the door is closed or "secure".

So you probably want to connect your cat 3 yellow to red secoalarm, and green alarm to black secoalarm. The result of this should be that the HAI sees a closed circuit when the door is closed.

the instruction say that "normally open" (green and black) is to be used for closed circuit systems, whereas "normally closed" (red and black) is for normally open circuit systems. is this incorrect? or should i just stick with the N.C. wiring as you suggest and ignore the "open circuit system"?

I have an Elk system. When the magnet is engaged (the door is closed), the circuit is closed. The standard for a magnetic contactor is to consider the normal state to be when the magnet is engaged. The alarm system standard is to have all circuits closed in the secure state, but you can make exceptions to this. (Like my water sensors, when the circuit closes, that is the alarm state). I can't imagine HAI is any different. And I agree with fabrio about using an end of line resister. This will detect a short in the system but you do have to know how to setup your HAI to properly acknowledge that.

Why don't you just hook it up and play with it. You can wire one way and then switch it to the other way. Learning by example is a bit easier here and there really shouldn't be any way that you could damage the system with an unpowered door contactor.

 

[Steve]

I would leave off the EOL unless you are prepared to put one on every opening as HAI is all or nothing for EOL. I would wire is first as Lou described in post 2 as NC. Either way the black will go to green. I would do red to yellow first. Worst case if the Omni shows the zone backwards from what you expect, then switch the red to the green attached to yellow. Can't hurt anything, just the Omni will work backwards one way and correct the other.

 

[Anthony A.]

perfect. thanks for clarifying and all the advice given. i will wire it up tonight and reverse if need be.

 

[Anthony A.]

perfect. thanks for clarifying and all the advice given. i will wire it up tonight and reverse if need be.

well, it appears that i needed to reverse the order. after doing that, the zone shows as secure when closed and not ready when open. thanks to all for the help!!!