Neural Fire Detector Fdoot241-X / Ax (Sensor Mode 2, 'Smoke Detector') - Siemens FDOOT221 Technical Manual

4 Planning
Parameter sets: Neural fire detector
4.3.3
56
Building Technologies
Fire Safety
Neural fire detector FDOOT241-x / AX (sensor mode 2,
'Smoke detector')
This sensor mode should be selected if fast temperature changes that are not
caused by fire may occur (e.g. in the case of radiant heaters, hot engines). In this
sensor mode the detector only reacts optically; this is comparable with a wide-
spectrum smoke detector. Having to a second optical sensor, however, it reveals a
balanced response behavior in relation to the different types of fire.
Robust (2):
This parameter set reacts to aerosols in a similar way as the neural fire detector
FDOOT241-x/-Ax in sensor mode 0 with the 'Robust' parameter set, without taking
into account the temperature.
Universal (1):
With 'Universal' the sensitivity and response time to aerosols are between 'Robust'
and 'Sensitive'.
Sensitive (3):
With regard to aerosols, this parameter set reacts in a way that is comparable to
'Fast Response' in sensor mode 0 without temperature influence.
Universal Fast (4):
With regard to aerosols, this parameter set reacts in a way that is comparable to
'Universal Fast' in sensor mode 0 without temperature influence.
No. Name
0 Universal
1
2 Robust
1 Universal
3 Sensitive
2
4 Universal Fast
3
= Delivery status; can only be selected in collective operation and in MS8
1
operation.
= Default status in AnalogPLUS operation as DO1131A
2
= Can only be selected in AnalogPLUS operation
3
All parameter sets meet the criteria of standard EN 54-7.
Response time [s]
50
80
50
30
8
Sensitivity
open fire / smoldering fire
[%/m]
2,3 / 8
2,3 / 8
2,3 / 8
1,6 / 5,6
2,3 / 8
007004_n_en_--
01.07.2012