Panasonic Eco Solutions Nordic AB
MEW01622
Rev: -
EBL128 Planning Instructions V2.0.x
123
When the temperature rise
deltaT
(°C/168sec.) > the alarm threshold
level, "3" is added to the counter every second.
When
T
or
deltaT
< the alarm threshold level, "2" is subtracted from
the counter every second.
15.1.3
Pulse up
– down counter for smoke & temperature
When
2S+deltaT
> the alarm threshold level, "1" is added to the
counter every second.
When
2S+deltaT
< the alarm threshold level, "2" is subtracted from
the counter every second.
15.2
Fire judgement
The fire judgement is depending on the
alarm threshold level
, which
is depending on the
area alarm algorithm
("learning mode" in the
following tables) and a
delay time
, which is dependent on if the
cause
of alarm
is smoke
S
, temperature
T
or
deltaT
or a combination of
smoke and temperature
2S+deltaT
and also the
area alarm
algorithm
.
When the counter shows "9" (i.e. at the earliest after nine seconds in
case of
S
or
2S+deltaT
and after three seconds in case of
T
or
deltaT
), the delay time starts and has to run out before a fire alarm
will be activated in the c.i.e.
15.3
Alarm threshold levels
Depending on the detector type and
Area alarm algorithm
there are
alarm threshold levels (
S
,
T
,
deltaT
and
2S+deltaT
) not only for fire
alarm but also for pre-warning and heavy smoke / heat alarm.
The following
fire alarm threshold levels
are valid for the different
type of detectors:
4452:
4401
:
4400
:
Learning
mode
Area alarm
algorithm
Area alarm
algorithm
Area alarm
algorithm