Panasonic Electric Works Nordic AB
MEW01351
Rev: -
Planning Instructions Fire alarm system EBL512 G3, V1.1.x
121
18
Cyber sensor functions
The latest generation of detectors are called "Cyber sensors".
The Cyber sensor "family" consists of the following detectors:
Conventional photoelectric smoke detector 4352
Conventional multi detector 4350
Analog photoelectric smoke detector 4301
Analog multi detector 4300
NOTE! NOTE! NOTE! NOTE! NOTE! NOTE! NOTE!
The analog detectors
4301
and
4300
can via the address setting tool
3314 be set in different modes but
in EBL512 G3
can only
NORMAL mode
be used. See chapters "COM loop units", page 37
and "Functions / Services / Features", page 89, i.e. the analog
detectors
4301
and
4300
do
not
use the cyber sensor functions
described below.
The conventional detectors
4352
and
4350
uses some of the cyber
sensor functions. See the function respectively below.
The
AI function
is used to secure the real fire alarms but also to
reduce the false (nuisance) alarms with up to 46 %. The AI function
is depending on if the detector is a photoelectric smoke detector (4352
/ 4301) or a multi detector (4350 / 4300):
Combined heat and smoke sensing
will guarantee reliable and
accurate fire alarm detection, e.g. by shortening the delay time
and/or raise the sensitivity (i.e. lower the alarm threshold level).
Variable delay time
. The delay time is influenced by the
temporary temperature and/or smoke obscuration changes just
before and after the alarm threshold level was passed. The
delay time before a fire alarm is activated can be shortened up
to 50 % (e.g. from 20 to 10 sec.), or the delay time can be
extended in order to reduce false (nuisance) alarms.
Learning function / conditions
. The detector will adapt a
learning condition depending on the long-time influence of
smoke and/or the temperature where the detector is located.
