Application 3.1: Safety Mode Sil3/Cat.4/Ple - Siemens SIMATIC ET 200SP Equipment Manual

5.4.1

Application 3.1: Safety mode SIL3/Cat.4/PLe

Wiring diagram - connecting a two-channel sensor equivalent via two channels
Per process signal, a two-channel sensor is connected equivalent via two channels to two
inputs of the F-module (1oo2 evaluation).
Supply the sensor from two different internal sensor supplies or from an internal and an
external sensor supply.
Figure 5-5 A two-channel sensor connected via two channels, internal sensor supply and a two-channel sensor connected
via two channels, internal and external sensor supply
To achieve SIL3/Cat.4/PLe using this wiring, you must use a qualified sensor.
Digital input module F-DI 8x24VDC HF (6ES7136-6BA01-0CA0)
Equipment Manual, 10/2021, A5E50578307-AA
WARNING
Applications of the F-I/O module
5.4 Application 3: Safety mode SIL3/Cat.4/PLe
47