Panasonic Firetracker FT1020G3 CIE, Техническое и программное руководство

Страница: 136 / 192

Technical/Programming Manual
FT1020G3 Rev 2.2.1
133
19.1.3 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.
19.2 Fire judgement
The fire judgement is dependent on the alarm threshold level , which is dependent 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 CIE.
19.3 Alarm threshold levels
Depending on the detector type, mode and learning condition, there are alarm threshold
levels (
S , T , deltaT and 2S+deltaT ) for pre-warning, fire alarm and heavy smoke / heat
alarm.
The following fire alarm threshold levels are valid for the different type of detectors:
4452 :
4401 :
4400:
19.4 Alarm Delay Time
The alarm delay time varies for the different types of detectors depending on the cause
of alarm, Area alarm algorithm and the values before / after the fire alarm threshold level
was exceeded.