Siemens SIMATIC ET 200SP HA Equipment Manual page 44

Applications of the F-I/O module
6.3 Application 2: Safety mode SIL3/Cat.3/PLe
Figure 6-4
You can also supply the sensor by means of an external sensor supply.
Figure 6-5
Wiring diagram – connecting two single-channel sensors via two channels
For each process signal, two single-channel sensors, which acquire the same process value, are
connected to two inputs of the F-digital input module (1oo2 evaluation).
Figure 6-6
You can also supply the sensors by means of an external sensor supply.
Figure 6-7
Requirement for sensor
To achieve SIL3/Cat.3/PLe using this wiring, you must use a qualified sensor.
(FDIW-006)
44
One two-channel sensor connected via two channels, internal sensor supply
One two-channel sensor connected via two channels, external sensor supply
Two single-channel sensors connected via two channels, internal sensor supply
Two single-channel sensors connected via two channels, external sensor supply
WARNING
Equipment Manual, 08/2021, A5E45647528-AD
F-DI 16x24VDC HA