C420 Programming Manual
5
The control panel is in the state of
Alarm with siren output OFF when
o
at least one zone is in alarm condition with siren output OFF
o
no zone is in alarm condition with siren output ON
o
the master alarm condition is not present
Alarm with siren output ON when
o
at least one zone is in alarm condition with siren output ON
o
the master alarm condition is not present
Master alarm when
o
the user pushes the relevant key on the keyboard or a zone programmed to trigger the master alarm condition
goes to alarm with siren output ON.
The alarm condition of the zones and the control panel involves the activation of the zone relays and the supplementary siren
outputs (if present) as follows:
If the control panel is in master alarm condition, all the zone relays and all the supplementary siren outputs are activated
If the control panel is not in master alarm condition, the alarm condition of each zone is taken into account:
o
if the zone is in alarm condition with siren output OFF, the zone relay is activated if it has been programmed to
be activated in this condition
o
if the zone is in alarm condition with siren output ON, the zone relay and the supplementary siren outputs
associated to the zone are activated.
Each zone can be programmed in one of the following operating modes:
Single knock
When the zone is in idle condition and the circuit detects an alarm from one or more points, it switches
to alarm condition with siren output ON.
Single knock with
delay (*)
When the zone is in idle condition and the circuit detects an alarm from one or more points, it switches
to alarm condition with siren output OFF and an activation timer starts. When the timer expires, the zone
switches to alarm condition with siren output ON.
Double knock
When the zone is in idle condition and the circuit detects an alarm from one point, it switches to alarm
condition with siren output OFF. When the same circuit detects an alarm from another point, the zone
switches to alarm condition with siren output ON.
Double knock with
delay (*)
When the zone is in idle condition and the circuit detects an alarm from one point, it switches to alarm
condition with siren output OFF. When the same circuit detects an alarm from another point, an
activation timer starts. When the timer expires, the zone switches to alarm condition with siren output
ON.
Hotel (*)
When the zone is in idle condition and the circuit detects an alarm from one or more points, it switches
to alarm condition with siren output OFF and an activation timer starts. If the same circuit detects an
alarm from another point before the timer expires, the residual timer is compared with the hotel reload
timer. If the residual timer is higher than the hotel reload timer, the latter is loaded in the residual timer.
In any case, when the residual timer expires the zone switches to alarm condition with siren output ON.
(*) In the modes with delay, it is possible:
to increment, by pressing the
INCREASE DELAY
key, the siren output activation timer;
to clear immediately, by pressing the
SKIP DELAY
key, the siren output activation timer.
Summary of Contents for C420
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