Siemens FD20 User Manual

7BSpecifications
56BTechnical data FDT221, FDT241
8
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138
Building Technologies
007004_t_en_--
Fire Safety
2015-11-04
8.3 Technical data FDT221, FDT241
You will find information on approvals, CE marking, and the relevant EU directives
for this device (these devices) in the following document(s); see 'Applicable
documents' chapter:
● Document 007005
● Document 007850
Detector line
Operating voltage (modulated) DC 12…33 V
Operating current (quiescent) Typ. 165 μA
Maximum current connection factor 1
Quiescent current connection factor 1
Address connection factor 1
Separator connector factor 1
Protocol FDnet
Compatibility See 'List of compatibility'
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 line 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 Max. 0.5 Ω (= Z
C max
)
The line separator is closed via an actuation signal from the control panel. Required line voltage: DC 12…33 V (normal range)
External alarm indicators
External alarm indicators which can be
connected
2
● Sounder base 1
Voltage DC 10…17 V
Current 9…15 mA
Length of line ● Max. 30 m with unshielded cables,
or when the shielding is connected
to the detector's positive pole
● Max. 5 m, if the shielding is
connected to earth
Flashing interval times:
● Bright 15 ms
● Dark 1 s

Siemens FD20 Specifications

General

Brand	Siemens
Model	FD20
Category	Security Sensors
Language	English