Fail-Safe Modules
7.5 4/8 F-DI DC24V PROFIsafe Digital Electronic Module
ET 200S Distributed I/O System - Fail-Safe Modules
Installation and Operating Manual, 08/2008, A5E00103686-07
113
7.5.5 Applications for the 4/8 F-DI DC24V PROFIsafe Electronic Module
Selecting the Application
The diagram below supports you in selecting an application which suits your fail-safe
requirements. The following chapters provide information for each application on wiring the
F-module, and which specific parameters you must program in
STEP 7
.
5HTXLUHG
VDIHW\FODVV"
8VHFDVHVWR
6HHFDVH
6HHFDVHV
6HHFDVHV
6,/&DWHJRU\
3/G
6,/&DWHJRU\
3/H
6,/&DWHJRU\
3/H
Figure 7-18 Use case selection - 4/8 F-DI DC24V PROFIsafe electronic module
WARNING
The achievable safety class is determined by the sensor quality and the length of the proof-
test interval in accordance with IEC 61508 standard. If the sensor quality does not meet the
requirements of the safety class, wire it to two channels for redundant operation.
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