Panasonic EBL128 Planning Instructions page 37

Panasonic Electric Works Nordic AB
MEW01090 Rev: 3
20°C => 3.8 %/m
↓ ↓
40°C => 1.8 %/m
b2) Decision algorithm:
Fire alarm will be activated if:
temperature (°C) + adjusted smoke value
Pre-warning will be activated if:
58 > temperature (°C) + adjusted smoke value
The "Decision algorithm"
reduce so called false alarms (nuisance alarms), because at
a normal room temperature, more smoke is required to
activate fire alarm than when the room temperature is high
(or is rising). By a real fire, the room temperature will rise
rather fast and less and less smoke is required to activate
fire alarm. Very little smoke require a "high" temperature
to activate fire alarm and very much smoke will activate
fire alarm also at a "low" temperature.
70
60
50
40
30
20
10
0
0 4 8 12 16 20 24 28 32 36 40 44 48 52 56 60
Figure 8. When the calculated value in the decision algorithm
exceeds the lower graph, pre-warning will be activated. When it
exceeds the upper graph, fire alarm will be activated.
Temperature = °C. Smoke value = obscuration (%/m) x 10.
The technical address is set with an Address setting tool (AST)
3314. The detector has an address label on which the
programmed technical address is to be written.
The Address setting tool 3314 is also used for mode setting:
NORMAL mode: 4300 in this mode is in Win128, for the
smoke detector, set to one of six algorithms H-15, H-35, L-15,
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Adjusted smoke value = obscuration (%/m) x 10. Default heat alarm
levels (50°C / 58°C) and smoke alarm offsets (50 / 58) can be changed via
Win128. The temperature can not be lower than 0°C in the algorithm / graph.
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The decision algorithm is a violation to the EN54-7 standard.
EBL128 Planning Instructions V1.1.x
38
, see figure can be used to
Smoke value
35
37
> 58.
37
> 50.