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3 System description of safe I/O modules | Transition diagramm
3.2
Transition diagramm
Transition diagramm for safe I/O modules
3.3
Current-/voltage characteristics of the fail
safe digital inputs
[mA]
4
Inputs "off"
3
2
1
0
0
2
4
6
Current-/voltage characteristic for P-switching inputs
10
State 1
Waiting for parameter
Unrecoverable fault
Inputs "on"
8
10
12
14
16
u-remote IP20 modules for functional safety manual
Parameter received from safety control
State 3
Fault
[mA]
4
3
2
1
0
[V]
18
20
0
Current-/voltage characteristic for PN-switching inputs
State 2
Running
Acknowledgement
by safety control
State 4
Requesting
acknowledgement
by safety control
Inputs "off"
Inputs "on"
2
4
6
8
10
12
[V]
14
16
18
20
1484600000/04/06.2017
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