Siemens S7-300 Installation And Operating Manual page 4

Preface
Approvals
The S7-300 system complies with the requirements and criteria of IEC 61131, Part 2. In
addition, CSA, UL, and FM approvals are available for S7-300.
The S7-300 fail-safe signal modules have also been certified for use in safety mode to:
● SIL3 (Safety Integrity Level) in accordance with IEC 61508
● Category 4 according to EN 954-1
● (PL) Performance Level e according to ISO 13849:2006
CE certifications
See chapter "Standards and Approvals (Page 59) ".
C-Tick-Mark for Australia
See chapter "Standards and Approvals (Page 59) ".
Standards
See chapter "Standards and Approvals (Page 59) ".
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Installation and Operating Manual, 01/2010, A5E00085586-10
Fail-safe signal modules