Siemens FS720 Mounting & Installation page 146

Installing, exchanging and connecting modules
6
Card cage
Element
Connection terminals
Connector
Degraded mode
Internal bus
6.17.3.2 X9 supply
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Building Technologies
Fire Safety
Des. Function
X9 System supply connection
X11 Connection terminals for module bus card 1
X12 Connection terminals for module bus card 1
X21 Connection terminals for module bus card 2
X22 Connection terminals for module bus card 2
X31 Connection terminals for module bus card 3
X32 Connection terminals for module bus card 3
X41 Connection terminals for module bus card 4
X42 Connection terminals for module bus card 4
X51 Connection terminals for module bus card 5
X52 Connection terminals for module bus card 5
X15 Connector for degraded mode indicator [AT] of module bus card 1
X25 Connector for degraded mode indicator [AT] of module bus card 2
X35 Connector for degraded mode indicator [AT] of module bus card 3
X45 Connector for degraded mode indicator [AT] of module bus card 4
X55 Connector for degraded mode indicator [AT] of module bus card 5
X500 Connector for module bus output to other card cages
X501 Connector for module bus input
Pin Designation
1 VSYS+
2 VSYS+
3 VSYS+
4 VSYS-
5 VSYS-
6 VSYS-
Admissible cable cross-section: 0.5...2.5 mm²
X9
VSYS+
VSYS+
VSYS+
VSYS-
VSYS-
VSYS-
Description
System supply (DC 24 V)
System supply (DC 24 V)
System supply (DC 24 V)
System supply (0 V)
System supply (0 V)
System supply (0 V)
1
2
3
4
5
6
A6V10210390_j_en_--
2015-12-15