Functions / Services / Features; Analog Smoke Detectors; Sensor Value; Week Average Sensor Value - Panasonic EBL128 Planning Instructions

Panasonic Electric Works Nordic AB
MEW01090 Rev: 3
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13.1
13.1.1
13.1.2

Functions / Services / Features

Some Functions / Services / Features require programming via
Win128, see chapter "PC S/W", page 12. For more information see
also the EBL128 Operating Instructions and Win128 help.
How to connect the PC and more information, see the EBL128
Operating Instructions chapter "SSD programming and download" and
"Software (S/W) download".

Analog smoke detectors

Sensor value

The basic working principle and some expressions are described
below. Regarding the analog smoke detectors 430x in NORMAL
mode, see chapter "Alarm algorithms for smoke detectors / Detection
levels / Offsets", page 82.
An analog smoke detector is like a "sensor". It detects its environment
at all times. The detected analog values are, in the detector, converted
to digital "sensor values", which are for each individual detector,
th
continuously (each 3.4
Figure 16 the (digital) sensor values are represented by the graph
"Working level".

Week average sensor value

Each hour, one sensor value is stored (in EBL128) and each week are
these stored sensor values used to calculate a "week average sensor
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value". This is done for each analog smoke detector individually.
In Figure 16 the (digital) week average sensor values are represented
by the graph "Week average".
Each analog smoke detector has a default sensor value = 1 (i.e. the
"Working level" at Time = 0). A "fire alarm offset" (value) is added
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 16 represented by the graph "Fire alarm level"
(being parallel with the graph "Week average").
Service signal will be given when the week average sensor value for a
detector has reached a fixed level, see "Service level" in Figure 16.
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The very first week average sensor value will be calculated within 2
minutes after any restart, i.e. also after SSD download. During these "2 min."
all analog smoke detector fire alarms are suppressed.
EBL128 Planning Instructions V1.1.x
sec.) picked up and evaluated by EBL128. In
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