Siemens FS20 - Guidelines on Supplying Power to Line Devices; Calculate the Operating Current of All Consumers

Determining the compact stations
Determining the batteries and power supply
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Building Technologies
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Fire Safety
2015
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11.3.1 Guidelines on supplying power to line devices
The DC 24 V power supply for line devices may only be provided via a power
supply approved to EN 54-4.
11.3.2 Calculate the operating current of all consumers
To calculate the operating current, all internal and external consumers must be
taken into account.
All components installed in the ↑ station are internal consumers. Some examples
of external consumers are:
● Fire terminals fed via the station
● Consumers that are activated by the control outputs and fed by the station
● ↑ Detector lines
Operating currents of the consumers
The sum of the operating current values can be calculated as follows:
I
R total
= Σ (no. of consumers * I
R
)
I
A total
= Σ (no. of consumers * I
A
)
I
R
= operating current in quiescent condition [A] (quiescent current)
I
A
= operating current in alarm condition [A] (alarm current)
The operating current of all power consumers can be easily calculated with the
↑ outline quantities tool.
Operating currents of the consumers
Consumer Type I
R
[mA] I
A
[mA] Qty. I
R total
I
A total
Notes
Stations Selection of ↑ station
Fire control panel FC2020 165 245
Fire control panel FC2030 185 260
Fire control panel FC2040 235 335
Fire control panel FC2060 250 350
Fire terminal FT2040 125 155
Fire terminal (Touch) FT2080 125 130
Additional internal
consumers
↑ Line card (FDnet) FCL2001-A1 65 65 For FC2030, FC2060
Line card (collective) FCL2002-A1 110 110 For FC2030, FC2060
Line card (MS9i) FCL2003-A1 65 65 For FC2030, FC2060
Line card (AnalogPLUS) FCL2005-A1 47 47 For FC2030, FC2060