Application 3.1 (Sil3/Cat.4/Ple) - Siemens SIMATIC ET 200SP HA Equipment Manual

6.4.1

Application 3.1 (SIL3/Cat.4/PLe)

Wiring diagram – connecting a two-channel sensor via two channels
For each process signal, a two-channel sensor is connected to two inputs of the F-I/O module
(1oo2 evaluation).
Supply the sensors from two different sensor supplies.
Figure 6-8
You can also connect two single-channel sensors via two channels. In this case, the same process
variable is acquired with two mechanically separate sensors.
Figure 6-9
Requirement for sensors
To achieve SIL3/Cat.4/PLe using this wiring, you must use a suitably qualified sensor.
(FDIW-007)
Parameter assignment
Assign the following parameters for the corresponding channel:
Table 6-6
Parameter
Sensor evaluation
Short circuit test
Sensor supply
F-DI 16x24VDC HA
Equipment Manual, 08/2021, A5E45647528-AD
One two-channel sensor connected via two channels, internal sensor supply
Two single-channel sensors connected via two channels, internal sensor supply
WARNING
Configuration for evaluation of the sensors, short-circuit test, sensor supply
6.4 Application 3: Safety mode SIL3/Cat.4/PLe
1oo2 evaluation, equivalent
Enabled
Internal (at least for one channel internal)
Applications of the F-I/O module
47