Fire Judgement; Pulse Up - Down Counter For Smoke & Temperature; Alarm Threshold Levels - Panasonic EBL128 Planning Instructions

Panasonic Eco Solutions Nordic AB
MEW01622 Rev: -
15.1.3
15.2
15.3
When the temperature rise deltaT (°C/168sec.) > the alarm threshold
level, "3" is added to the counter every second.
When T or deltaT < the alarm threshold level, "2" is subtracted from
the counter every second.
Pulse up – down counter for smoke & temperature
When 2S+deltaT > the alarm threshold level, "1" is added to the
counter every second.
When 2S+deltaT < the alarm threshold level, "2" is subtracted from
the counter every second.

Fire judgement

The fire judgement is depending on the alarm threshold level, which
is depending on the area alarm algorithm ("learning mode" in the
following tables) and a delay time, which is dependent on if the cause
of alarm is smoke S, temperature T or deltaT or a combination of
smoke and temperature 2S+deltaT and also the area alarm
algorithm.
When the counter shows "9" (i.e. at the earliest after nine seconds in
case of S or 2S+deltaT and after three seconds in case of T or
deltaT), the delay time starts and has to run out before a fire alarm
will be activated in the c.i.e.

Alarm threshold levels

Depending on the detector type and Area alarm algorithm there are
alarm threshold levels (S, T, deltaT and 2S+deltaT) not only for fire
alarm but also for pre-warning and heavy smoke / heat alarm.
The following fire alarm threshold levels are valid for the different
type of detectors:
4452:
Area alarm
Learning
algorithm
mode
4401:
Area alarm
algorithm
4400:
Area alarm
algorithm
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EBL128 Planning Instructions V2.0.x