1 Overview
This chapter describes the structure of the instruction manual, the basic mode of
operation and the structure of the PROTECT-PSC Sicherheits-Kleinsteuerung.
1.1 Preface 1–2
1.2 Definition of terms 1–2
1.3 Structure of the document 1–3
1.3.1 Page lay-out 1–3
1.3.2 Explanation of symbols 1–4
1.4 Product description 1–4
1.4.1 Overview of the modules 1–5
1.4.2 Brief data 1–5
1.4.3 Area of use 1–6
1.5 Mode of operation 1–6
1.5.1 Hardware 1–6
1.5.2 Software 1–6
1.6 Safety function 1–7
1.7 Performance Level 1–7
1.7.1 Risk graph 1–8
1.7.2 Determining the Performance Level 1–8
1.8 Safety Integrity Level 1–10
1.9 Calculation example 1–12
1.9.1 Performance Level 1–12
1.9.2 SIL with high demand rate 1–12
1.9.3 SIL with low demand rate 1–12
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