13
AA800EZe rev.04
AA800EZe
3.7.3. Dry Contact Inputs & Bur-
glar Zone Settings
Dry contacts can be either normally open
(NO) or normally closed (NC) circuits. In ad-
dition, they can be configured for an end of
line resistor (EOLR). Adding an end of line
resistor will help the system detect wiring
problems. This is illustrated in the figure be-
low. In the center diagram, an open wire has
occurred. The system detects this by reading
the resistance on the circuit and sets off an
alarm when this happens. The figures below
shows three possible states for a normally
open circuit with EOLR.
opened circuit
Normal Alarm Alarm
Normally Open Circuits
with EOLR
The following figures show different zone
connection examples. Note that if you add
an EOLR to a circuit, the resistor must be
connected to the sensor that is furthest from
the Agri-Alert system.
Dry Contact Burglar Input
Dry contact inputs can be configured as
burglar zones. These zones are armed or
disarmed as a group using a password and
they are connected just as regular dry contact
inputs. Burglar zones can be configured in
2 different ways:
Examples of Zone Connections
without EOLR
Normally open circuit Normally closed circuit
Examples of Zone Connections
with EOLR
Normally open circuit Normally closed circuit
Instant burglar zone: in this type of zone, 1.
alarms are declared as soon as they are
detected.
Delayed burglar zone: in this type of zone, 2.
alarms are declared only after an entry delay
has elapsed. This way, the authorized user
has time to disarm burglar zones before an
alarm is declared (the delay is common to all
delayed burglar zones). Similarly, all zones are
armed after the exit delay has elapsed.
When the system is arming, the speaker starts
beeping and the Agri-Alert displays a count-
down of the exit delay. After the exit delay
has elapsed, the “Burglary Armed” pilot light
turns red, the system arms all burglar zones
and sets off an alarm as soon as an alarm
situation occurs in any burglar zone.
If an alarm occurs in a burglar zone with an
entry delay, the Agri-Alert displays a count-
down of the entry delay. The speaker beeps
during this delay and stops beeping when
the key sequence is entered. If no one has
disarmed the system after the entry delay
has elapsed, an alarm is declared; if someone
has correctly disarmed the system, all burglar
zones are disarmed at once and the “Burglary
Armed” pilot light turns off.
Assigning Dry Contact & Burglar
Zones
Select:1.
• Main Menu
• Install Programming*
• Program Zones
* Accessible with the Installer or Master password
only (see section 3.2).
Press Next 2. to display a table showing
all zones in use.
Use the numeric keypad to select the 3.
desired zone number.
Zone 1 Installation
Type Dry Contact
Normal State Closed
EOL Resistor No
Rec.Time (h:m:s) 0:00:30
Back
Zone 2
Set the following parameters:4.
Ty p e of Z o ne — Select “Dry Contact” to assign
a regular dry contact input ; select “Delayed
Burglar” to assign a dry contact burglar zone
which uses a delay or select “Instant Burglar”
to assign a dry contact burglar zone which
uses no delay.
Normal State (NO / NC) — Select the normal
state of the zone contact: Normally open or
normally closed contact.
EOL Resistor — Specify if the input has an
end of line resistor or not.
Recognition Time — Determine during how
mu c h ti m e th e a l ar m c ond i ti on mu s t b e mai n -
ta i ne d b e fo re i t c ons tit u te s a va l id al a rm s i tu -
ation. *For regular dry contact inputs only.
Refer to section 5.4 to set the entry and
exit delays of burglar zones.
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