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Contents
VEGAFLEX 80 series • Two-wire 4 … 20 mA/HART
42960-EN-170410
Contents
1 Document language
2 Scope
2.1 Instrument version ............................................................................................................ 4
2.2 Area of application ........................................................................................................... 4
2.3 SIL conformity .................................................................................................................. 4
3 Planning
3.1 Safety function ................................................................................................................. 6
3.2 Safe state ......................................................................................................................... 6
3.3 Prerequisites for operation ............................................................................................... 6
4 Safety-related characteristics
4.1 Characteristics acc. to IEC 61508 .................................................................................... 7
4.2 Characteristics acc. to ISO 13849-1 ................................................................................. 7
4.3 Characteristics acc. to IEC 61508 for versions with approval Ex-d-ia/XP-AIS ................... 8
4.4 Characteristics acc. to ISO 13849-1 for versions with approval Ex-d-ia/XP-AIS ............... 8
4.5 Supplementary information .............................................................................................. 9
5 Setup
5.1 General information ........................................................................................................ 10
5.2 Instrument parameter adjustment ................................................................................... 10
6 Diagnostics and servicing
6.1 Behaviour in case of failure ............................................................................................ 12
6.2 Repair ............................................................................................................................ 12
7 Proof test
7.1 General information ........................................................................................................ 13
7.2 Test 1: Without checking the process variable ................................................................ 13
7.3 Test 2: With check of the process variable ...................................................................... 14
8 Appendix A: Test report
9 Appendix B: Term definitions
10 Supplement C: SIL conformity
Editing status: 2017-04-06
