Panasonic MEW01 351 Planning Manual page 44

Panasonic Electric Works Nordic AB
MEW01351 Rev: -
Zone-Addr.
001-01 (smoke
or heat)
COM loop address
e.g. 123
20°C => 3.8 %/m
↓ ↓
40°C => 1.8 %/m
Planning Instructions Fire alarm system EBL512 G3, V1.1.x
4313). Built-in LEDs are lit to indicate that the detector
activated a fire alarm. Prepared for mechanical lock (screw
attached) – if required.
Via WinG3, it is set how the detector shall operate:
a) Two presentation numbers (addresses): The detector
unit works as two separate detectors. The smoke detector is
programmed for one zone-address and the heat detector for
another zone-address
detector during working hours and/or in control expressions for
programmable outputs).
b) One presentation number (address): The detector unit
works as one detector and is programmed for one zone-address.
Via WinG3 is set if the detectors in alt. b) shall work with "OR-
functionality" or with a "Decision algorithm":
b1) OR-functionality: Either the heat detector or the
smoke detector will activate fire alarm. This alternative is
recommended in most cases.
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.
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I.e. the heat detector and/or the smoke detektor.
26
The zone number has to be the same for both detectors. NOTE! When
counting alarm points these "two detectors" are regarded as two alarm points.
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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
WinG3. The temp. 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.
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. (Can be used to disable e.g. the smoke
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, see figure can be used to
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25
has
27
> 58.
27
> 50.