Siemens FDSB221, Technical Manual, Page: 31 / 42

Specifications
Technical data FDSB221
8
31
Building Technologies A6V10320090_c_en_--
Fire Safety 02.11.2011
8 Specifications
8.1 Technical data FDSB221
Detector line Operating voltage DC 12…33 V
Operating current:

Standby 250 μA

Sound activated 3,5 mA
Quiescent current connection factor 1
Address connection factor 1
Separator connector factor 1
Protocol FDnet
System compatibility See 'List of compatibility'
Connection factor: Sound activated 15
Line separator Line voltage:

Nominal DC 32 V (= V
nom
)

Minimum DC 12 V (= V
min
)

Maximum DC 33 V (= V
max
)
Voltage at which the separator opens:

Minimum DC 7.5 V (= V
SO min
)

Maximum DC 10.5 V (= V
SO max
)
Permanent current when switches are closed: Max. 0.5 A (= I
C max
)
Switching current (e.g. in the event of a short-circuit) Max. 1 A (= I
S max
)
Leakage current when switches are open: Max. 1 mA (= I
L max
)
Serial impedance when switches are closed:

Point detector not used 0.5 Ω (= Z
C max
)

Point detector used 2x 0.5 Ω
Function Number of selectable tones 11
Number of programmable activation levels 2
Number of programmable sound levels

1 alarm sound level according to EN 54-3

2 test sound levels
3
Adjustable maximum sound levels (typical values in
dBA/m at DC 32 V with cover plate FDBZ296)
For details, see 'Annex technical data'
77…83 dBA