Electronic Alarms and Home Security Devices - zone wiring DSC
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csbbmet
12-09-05, 06:42 AM
I have the following:
-family room: motion detector and glass sensor
-hall: motion detector
-living room: combo glass break and motion
-garage: glass break sensor
-two door sensor wired in series to keypad zone
-one smoke detector and maybe a second.
I was thinking of wiring the motion detectors on one zone. I know that I run my wires to the panel and connect them in series from there. The question is can I leave off the resistors?
Also what I want to achieve is when the system is armed in stay mode, I want all glass sensors armed and door sensors. I only have a six zone system. Do I need to purchase a zone extender or will putting two of the motion detectors in series on one zone work?
If I use two smoke detectors, by the way they are the two wire dsc i series type. Do I need any special module or just connect them in series and wire them to PG2?
-family room: motion detector and glass sensor
-hall: motion detector
-living room: combo glass break and motion
-garage: glass break sensor
-two door sensor wired in series to keypad zone
-one smoke detector and maybe a second.
I was thinking of wiring the motion detectors on one zone. I know that I run my wires to the panel and connect them in series from there. The question is can I leave off the resistors?
Also what I want to achieve is when the system is armed in stay mode, I want all glass sensors armed and door sensors. I only have a six zone system. Do I need to purchase a zone extender or will putting two of the motion detectors in series on one zone work?
If I use two smoke detectors, by the way they are the two wire dsc i series type. Do I need any special module or just connect them in series and wire them to PG2?
MrRonFL
12-09-05, 05:02 PM
Yes, you can program this system (which I assume to be a PC1555) to not need the zone resistors.
Here's a helpful hint: You can define the keypad input as a higher zone number, effectively giving yourself another zone to work with.
In general, it's better to have motion detectors on individual zones, because when there is a false trip, you can figure out which one is the actual problem, easily. There is no reason, otherwise, that you can't connect their zone inputs in series like any other set of NC switches.
The combo unit needs to have a seperate pair of wires (in addition to the regular 4-conductor) if you want the glass break circuits to work while the motion detector is bypassed.
Smoke detectors are the exception to the rule. They must be wired in parallel, not series, with the supervision resistor (which must be used, even if you turn off the resistor requirement for the security inputs) on the last device (i.e. a 2-conductor from the panel to the first smoke, then from the first smoke to the second smoke, etc). Note also that that resistor is a different value from the other zone inputs (2.2k ohm).
The one thing I can't remember, is whether turning off the resistor requirement also turns it off for the keypad input. I _think_ it does.
If I was zoning this system, I would have the three motion inputs on individual zones, the 3 glass break inputs on one zone, your doors on the keypad zone input (as entry exit doors, I assume). That's actually only 5 zones used leaving 2 unused (you can assign the keypad input to zone 7).
On a DSC, the PGM input doesn't count as a zone.
If you wanted, you could split off the glass breaks individually, or even add more devices.
Here's a helpful hint: You can define the keypad input as a higher zone number, effectively giving yourself another zone to work with.
In general, it's better to have motion detectors on individual zones, because when there is a false trip, you can figure out which one is the actual problem, easily. There is no reason, otherwise, that you can't connect their zone inputs in series like any other set of NC switches.
The combo unit needs to have a seperate pair of wires (in addition to the regular 4-conductor) if you want the glass break circuits to work while the motion detector is bypassed.
Smoke detectors are the exception to the rule. They must be wired in parallel, not series, with the supervision resistor (which must be used, even if you turn off the resistor requirement for the security inputs) on the last device (i.e. a 2-conductor from the panel to the first smoke, then from the first smoke to the second smoke, etc). Note also that that resistor is a different value from the other zone inputs (2.2k ohm).
The one thing I can't remember, is whether turning off the resistor requirement also turns it off for the keypad input. I _think_ it does.
If I was zoning this system, I would have the three motion inputs on individual zones, the 3 glass break inputs on one zone, your doors on the keypad zone input (as entry exit doors, I assume). That's actually only 5 zones used leaving 2 unused (you can assign the keypad input to zone 7).
On a DSC, the PGM input doesn't count as a zone.
If you wanted, you could split off the glass breaks individually, or even add more devices.
csbbmet
12-09-05, 05:35 PM
I only have 6 zones at the control panel. So what you are saying is that basically I have a 7th zone by using the keypad zone?
MrRonFL
12-09-05, 07:18 PM
Yup. For all intents and purposes, that keypad zone input is a 1 zone expander board (for this system, you only get one, though, even if you have multiple keypads)