Siemens SIMATIC Operating Instructions Manual page 69

1L+ M
L+
Figure 8-6
In order to achieve SIL3/Category 3 with this wiring, you must install a suitably qualified
sensor, for example, in accordance with IEC 60947.
Assignable Parameters for Use Case 2.1
Set the "Evaluation of the sensors" parameter to "1oo2 evaluation" and the "Type of sensor
interconnection" parameter to "1-channel" for the relevant input. The discrepancy time is
permanently preset to 10 ms and cannot be changed.
You can enable or disable the "Short-circuit test" parameter. However, you must disable the
short-circuit test as soon as at least one fail-safe digital input is externally supplied.
Otherwise, the "Short circuit" diagnostic is reported.
ET 200pro Distributed I/O System - Fail-Safe Modules
Operating Instructions, 05/2007, A5E00394073-02
1L+
Vs1
M
Wiring Diagram for F-DI Modules - One Sensor Connected Via One Channel to Two
Inputs, External Sensor Supply
WARNING
8.1 8 /16 F-DI DC24V PROFIsafe Digital Electronic Module
8/16 F-DI
4/8 F-DI/4 F-DO
DI0 DI1 DI2 DI3
S0
S1
S2
S3
Fail-Safe Electronic Modules
Vs2 DI4 DI5 DI6 DI7
69