Technical Report [PUBLISHED]

DIN CLC IEC/TR 61511-4
Functional safety - Safety instrumented systems for the process industry sector - Part 4: Explanation and rationale for changes in IEC 61511-1 from Edition 1 to Edition 2 (IEC/TR 61511-4:2020); German version CLC IEC/TR 61511-4:2020

Title (German)

No German title available

Brief description

IEC TR 61511-4 was created to explain the rationale leading from Edtion 1 to Editon 2 to a general audience. The report is intended to prevent misunderstandings in the application of the 61511 series. It responds to the prevailing trend of sharing automation systems across multiple safety functions. It also reaffirms the need to design functional safety management instead of focusing on calculations and managing the actual performance of the SIS. For this purpose, the main differences are listed. In addition, typical approaches of the process industry are presented on how to apply the respective clauses.

Issue date

2021-04

Developing committee

ISO/TC 65A - System aspects

National mirror committee

DKE/GK 914 - Funktionale Sicherheit elektrischer, elektronischer und programmierbarer elektronischer Systeme (E, E, PES) zum Schutz von Personen und Umwelt

areas / working committees

Further Training, Safety, Certification

topic / sub working committees

Safety

topics / working groups

Safety design principles
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