Siemens FS720 - Page 172

Installing, exchanging and connecting modules
Card cage
7
172 | 248
Building Technologies
A6V10210390_m_en_
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Fire Safety
2018
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08
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29
Element Des. Function
Slots X1 Connector strip for module bus card 1
X2 Connector strip for module bus card 2
Connection terminals 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
Connector
Degraded mode
X15
Connector for degraded mode indicator [AT] of module bus
card 1
X25
Connector for degraded mode indicator [AT] of module bus
card 2
Internal bus X501 Connector for module bus input
7.17.2.2 X9 supply
Pin Designation Description
1 VSYS+ System supply (+)
2 VSYS+ System supply (+)
3 VSYS+ System supply (+)
4 VSYS- System supply (–)
5 VSYS- System supply (–)
6 VSYS- System supply (–)
Admissible cable cross-section: 0.2…2.5 mm²
7.17.2.3 X11…X22 connection terminals for the module bus cards
The module bus card determines the PIN assignment of the four connectors. You
will find the pin assignments in the description of the corresponding module card.
The assignment of the connector is:
● Connections of module bus card 1 are on connectors X11 and X12
● Connections of module bus card 2 are on connectors X21 and X22
4
3
6
5
X9
2
1
VSYS+
VSYS+
VSYS+
VSYS-
VSYS-
VSYS-