Learning Function / Learning Conditions; Area Alarm Algorithms; Smoke - Steam Area, Level 1 - Panasonic Firetracker FT1020G3 CIE Technical And Programming Manual

19.5

Learning function / Learning conditions

Detectors 4400 and 4401 can use a Learning function, i.e. 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 default (Normal) one, an Area Alarm algorithm
19.5.1

Area Alarm algorithms

Normal area is the default Area alarm algorithm for each detector. There are four other
Area alarm algorithms that can be adapted after the learning period:

Smoke – Steam area, is dependent on the occurrence of smoke, i.e. level 1 = S
[%/m]

Heater area, is dependent on the rise of temperature, i.e. level 2 = deltaT [°C/168
sec.]

Cooking – Welding area, is dependent on the occurrence of smoke in conjunction
with the rise of temperature, i.e. level 3 = 2S+deltaT
Note: S has to be

Clean area, is the most sensitive condition, requiring a very clean and stable
environment, i.e. the values for all the other types of areas (level 1, 2 and 3) must
not be exceeded.
19.5.1.1

Smoke - Steam area, level 1

A learning period contains twenty 36h-periods (i.e. 20 x 36h = 720h = 30 days = one
month).
36h 36h 36h 36h 36h
 
1 2 3 4 5
During each 36h-period, it is recorded if level 1 is exceeded at least once. If so, the 36h-
period will get a check-mark (see example).
If three or more of the 36h-periods during the learning period have a check-mark, the
smoke - Steam area alarm algorithm will be adapted. In the example this happens in the
36h-period no. 10 (i.e. after 10 x 36h = 360h = 15 days).
After the 36h period no. 20, the next learning period starts again in the 36h period no.
1. The check-marks are inherited from the previous learning period. Depending on
whether level 1 was exceeded during the 36h period, a check-mark or no check-mark will
be recorded if it has exceeded and no check mark if it did not exceed.
36h 36h 36h 36h 36h

1 2 3 4 5
In the example, the Smoke - Steam area algorithm condition will be changed back to the
Normal area alarm algorithm after the 36h period no. 3, since at that time only two 36h
periods are left with check-marks in the learning period now. (If later, one or more 36h
147
The area alarm algorithm can be set Via EBLWin to be either automatically adapted via the Learning function or manually set.
If manually set, also an alternative Area Alarm algorithm can be controlled by a time channel.
≥
half the fire alarm threshold level (S).
≥
12 (approx. 4.3°C/min.).
≥
2.5 and deltaT has to be
36h 36h 36h 36h 36h

6 7 8 9 10
36h 36h 36h 36h 36h

6 7 8 9 10
135
Technical/Programming Manual
147
. See also page 132
≥
10.
≥
3.
36h 36h 36h 36h 36h
11 12 13 14 15
36h 36h 36h 36h 36h
11 12 13 14 15
FT1020G3 Rev 2.2.1
36h 36h 36h 36h 36h
16 17 18 19 20
36h 36h 36h 36h 36h
16 17 18 19 20