Siemens FS720 Mounting & Installation page 144

Installing, exchanging and connecting modules
6
Card cage
Element
Connector
Degraded mode
Internal bus
6.17.2.2 X9 supply
6.17.2.3 X11...X22 connection terminals for the module bus cards
144 | 222
Building Technologies
Fire Safety
Des. Function
X15
Connector for degraded mode indicator [AT] of module bus
card 1
X25 Connector for degraded mode indicator [AT] of module bus
card 2
X501 Connector for module bus input
Pin Designation
1 VSYS+
2 VSYS+
3 VSYS+
4 VSYS-
5 VSYS-
6 VSYS-
Admissible cable cross-section: 0.2...2.5 mm²
X9
VSYS+
VSYS+
VSYS+
VSYS-
VSYS-
VSYS-
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
Description
System supply (+)
System supply (+)
System supply (+)
System supply (–)
System supply (–)
System supply (–)
1
2
3
4
5
6
A6V10210390_j_en_--
2015-12-15