Siemens S7-300 - Application 7: Safety Mode Sil3;Cat.4;Ple

Analog modules
9.3 SM 336; F-AI 6 x 0/4 ... 20 mA HART
Fail-safe signal modules
252 Installation and Operating Manual, 01/2010, A5E00085586-10
9.3.10 Application 7: Safety mode SIL3/Cat.4/PLe
Introduction
Below are the wiring scheme and the parameter assignment of
SM 336; F-AI 6 x 0/4 ... 20 mA HART for
● Application 7: Safety mode SIL3/Cat.4/PLe for "2oo3 evaluation with high availability.
Diagnostic messages, possible causes of the problem and their corrective measures are
found in tables
Diagnostic messages of SM 336; F-AI 6 x 0/4 ... 20 mA HART and Diagnostic
messages and associated corrective measures for SM 336; F-AI 6 x 0/4 ... 20 mA HART
in
chapter "Diagnostic messages of SM 336; F-AI 6 x 0/4 ... 20 mA HART (Page 257)".
Current measurement 0/4 to 20 mA with 2-wire and 4-wire transducer, high-availability, for
application 7
Two process signals can be connected to a module in this interconnection variant. The
sensors can also be connected to an external sensor supply (see Figure
External sensor
supply, 2-wire transducer for SM 336; F-AI 6 x 0/4 ... 20 mA HART
in chapter "Properties,
front view, wiring diagram and block diagram (Page 224)".
You can use interconnection
schemes A to D for this application.
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