Siemens FC72x Quick Reference Manual page 30

Installation
5
Hardware components
X8/1 Designation
8
7
X8/1
6
5
4
3
2
1
X8/2 Designation
16
15
14
13
12
11
10
X8/2
9
X8/1
I/O1
I/O2
X8/2
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Building Technologies
Fire Safety
Assignment on FC724 periphery board (4-loop)
Permitted cable cross-section: 0.2 to 1.5 mm
FC724
Description
GND_01 (-) supply output 1
VSYS_01 (+) supply output 1
I/O6 Configurable input/output 6
I/O5 Configurable input/output 5
I/O4 Configurable input/output 4
I/O3 Configurable input/output 3
I/O2 Configurable input/output 2
I/O1 Configurable input/output 1
Description
GND_02 (-) supply output 2
VSYS_02 (+) supply output 2
I/O12 Configurable input/output 12
I/O11 Configurable input/output 11
I/O10 Configurable input/output 10
I/O9 Configurable input/output 9
I/O8 Configurable input/output 8
I/O7 Configurable input/output 7
Example: Principle circuit with I/O 1 (connection 1) and/or I/O 2 (connection 9)
.
2
I/O 1 as 'input'
The input can be triggered with a potential-free,
external switching contact. In such cases, the
corresponding input is switched to GND.
Depending on the programming, a permanent or
sensing contact can be connected. The activated
input can be used to program one of the station's
control functions.
I/O 2 as 'output'
Configuration as 'output' allows for the activation of
external devices (e.g. relays) with 'Vsys' voltage
should certain events arise. In such cases, the
corresponding output is switched to GND.
The output's activation condition (e.g. alarm, fault,
isolation etc.) is defined in the customer data
programming.
DC 20 V – DC 30 V/ 1 A
Individual current max.
300 mA
Total current max. 1 A
DC 20 V – DC 30 V/ 1 A
Individual current max.
300 mA
Total current max. 1 A
A6V10211094_f_en_--
2015-12-15