Alarm Threshold Levels; Learning Function / Learning Conditions; Learning Conditions - Panasonic EBL128 Planning Instructions

Panasonic Electric Works Nordic AB
MEW01090 Rev: 3
15.3
15.4
15.4.1
4352: Fire alarm is activated.
4350: Depending on the AI function (learning condition, temperature
condition, etc.) a delay time has to run out before fire alarm is
activated.

Alarm threshold levels

Depending on the detector type, mode and learning condition there are
alarm threshold levels (S, T, deltaT and 2S+deltaT) for pre-warning,
fire alarm and heavy smoke / heat alarm.
The following fire alarm threshold levels are valid for the different
type of detectors:
4352:
4350:
#2
NOTE! S > 2.5 (%/m) and deltaT > 3 (°C/168 seconds).

Learning function / Learning conditions

Depending on the local temperature changes and the local occurrence
of smoke where the detector is situated, each detector can after a
learning period, adapt a more appropriate alarm algorithm than the
normal one, i.e. a learning condition. See also page 112.

Learning conditions

Each detector starts in the Normal condition.
learning conditions that can be adapted:
 Steam / tobacco condition, depending on the occurrence of
smoke, i.e. level 1 = S [%/m] > half the fire alarm threshold
level (S).
 Heating condition, depending on rise of temperature, i.e. level 2
= deltaT [°C/168 sec.] > 12 (approx. 4.3°C/min.).
 Cooking condition, depending on the occurrence of smoke
together with rise of temperature, i.e. level 3 = 2S+deltaT >
10. NOTE! S has to be > 2.5 and deltaT has to be > 3.
 Clean condition, the most sensitive condition requiring very
clean and stable environment, i.e. the values for all the other
conditions (level 1, 2 and 3) must not be exceeded.
111
EBL128 Planning Instructions V1.1.x
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