Siemens PM-E F pm DC24V PROFIsafe Installation And Operating Manual page 121

Wiring Diagram for Application 2.2 – Connecting Two Single-Channel Sensors to Two Channels
Two single-channel sensors are connected via two channels to two inputs of the F-module
for each process signal (1oo2 evaluation). The sensors can also be connected to an external
sensor supply.
Figure 7-25
To achieve SIL3/Category 3/PLe using this wiring, you must use a suitably qualified sensor.
Assignable Parameters for Application 2.2
Set the "sensor evaluation" to "1oo2 evaluation" at the corresponding input, and "2-channel
equivalent" at the "Type of sensor interconnection" parameter. Disable the "short-circuit test"
parameter.
ET 200S Distributed I/O System - Fail-Safe Modules
Installation and Operating Manual, 08/2008, A5E00103686-07
Wiring diagram EM 4/8 F-DI DC24V - two 1-channel sensors connected via two
channels, internal sensor supply
WARNING
7.5 4/8 F-DI DC24V PROFIsafe Digital Electronic Module
Fail-Safe Modules
121