Siemens FS20 - Wiring up the System Supply and Module Bus

Mounting and installation
FC2080
Wiring up the system supply and module bus
6
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Building Technologies
008851_s_en_
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Fire Safety
2016
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6.10 Wiring up the system supply and module bus
The following guidelines must be observed when wiring the module bus and
system supply.
Guidelines
WARNING
Switching batteries in parallel
Risk of explosion and fire
● Never connect batteries in parallel!
●
If you need more power, you must use batteries with a higher capacity.
● The maximum current of the system supply per card cage is 8 A. The power
supply must be distributed accordingly.
● The system supply to the card cages must be wired in a star configuration from
the secondary terminals.
● A maximum of 4 card cages may be connected per module bus.
● The supplied cables must be used to wire up the module bus. Extending the
module bus cable is not allowed.
● Module bus wiring up of the card cage must be carried out as shown in the
drawing:
– Card cages 1 to 4 on module bus 1 (X5000)
– Card cages 5 to 7 and 8 on module bus 2 (X5001)
● To guarantee ground fault monitoring in all card cages via the communication
card FCC2005, the 0 V connection must be inserted between the two carriers
(19", power supply).
The following diagram shows an example of the wiring principle for the module bus
and supply connections. The setup shown with 2 battery kits and 8 card cages
serves as an example only and is not feasible in a cabinet in practice.