Panasonic EBL128, Planning Instructions, Page: 93 / 179

Panasonic Eco Solutions Nordic AB
MEW01622 Rev: - EBL128 Planning Instructions V2.0.x
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13 Functions / Services / Features
Some Functions / Services / Features require programming in
EBLWin, see chapter "PC S/W", page 14.
How to connect the PC and for more information, see chapters
"Download SSD", page 153 and "New system program (S/W) version
download", page 156.
The information in the following chapters 13.1 - 13.7 is valid for the
analog smoke detectors 430x / 440x in NORMAL mode.
Chapter 13.5 is valid for the analog heat detectors 3308 / 3309 in
NORMAL mode .
For the analog detectors 440x in Advanced mode , see chapter
"Advanced mode", page 123.
13.1 Sensor value
An analog smoke detector is like a "sensor". It detects its environment
at all times. Each detected analog value is, in the detector, converted
to a digital "
sensor value ", which for each individual detector, is
continuously picked up and evaluated by EBL128. In Figure 17 the
(digital) sensor values (during a certain time) are represented by the
graph "
Working level ".
13.2 Week average sensor value
Each hour, one sensor value is stored in a special memory (in
EBL128) and each week, these stored sensor values are used for a
"
week average sensor value " calculation.
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This is done for each
analog smoke detector individually. In Figure 17 the (digital) week
average sensor values (during a certain time) are represented by the
graph "
Week average sensor value
" (B).
Each analog smoke detector has a default sensor value = 0.1 %/m and
a week average sensor value = 0.1 %/m (i.e. at Time = 0).
A " fire alarm offset " (value) is added to the week average sensor
value to get each detector's " Fire alarm level ", i.e. the fire alarm level
will be adjusted in relation to each new week average sensor value in
order to keep the detector's fire alarm sensitivity constant. The fire
alarm level is in Figure 17 represented by the graph "
Fire alarm level
"
(C) - parallel with the graph "
Week average sensor value
" (B).
In Figure 17 (at Time = 0):
The week average sensor value (B) is 0.1 %/m and the fire alarm
offset is 3 %/m, i.e. the fire alarm level (C) is 0.1+3=3.1 %/m.
Service signal will be given when the week average sensor value for a
detector has reached the service signal level (1.8 %/m), i.e. the
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The first week average sensor value will be calculated within 2½ minutes
after any restart, i.e. also after SSD download. During these 2½ minutes all
analog smoke detector fire alarms are suppressed.