User Documentation

7 Example applications | Example applications for safe I/O modules
73u-remote IP20 modules for functional safety manual 1484600000/07/11.2020
In section 7.1 you will nd example applications for safe I/O
modules, the sections 7.2 to 7.12 show example applica-
tions of safe power-feed modules.
All examples shown are proposals without war-
ranty. In any case the operator has to perform a
safety review of the entire site.
7.1 Example applications for safe I/O modules
1
2
3
4
UR20-
*
-FS
*
OSSD1
OSSD2
0 V
+24 V
AOPD
DI: P-switching, without test pulses
DI: without test pulses
Input
Example application with active optoelectronic protective device (AOPD)
1
2
3
4
UR20-
*
-FS
*
L+(+24 V)
M(0 V)
1)
1)
1)
1)
100 mA
Safety relay
Sensor
DI: N-switching, without test pulses
DI: N-switching, without test pulses
Input
1)
max. 40 Ω
Example application cross-circuiting detection without test pulses
7 Example applications