IEC 61511-1:2016 ED2

Functional safety - Safety instrumented systems for the process industry sector - Part 1: Framework, definitions, system, hardware and application programming requirements

Publication date:   Aug 16, 2017

General information

60.60 Standard published   Feb 24, 2016


TC 65/SC 65A

International Standard

13.110   Safety of machinery | 25.040.01   Industrial automation systems in general



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IEC 61511-1:2016 is available as IEC 61511-1:2016
RLV which contains the International Standard and its Redline
version, showing all changes of the technical content compared to
the previous edition.

IEC 61511-1:2016 gives requirements for the specification, design, installation, operation and maintenance of a safety instrumented system (SIS), so that it can be confidently entrusted to achieve or maintain a safe state of the process. IEC 61511-1 has been developed as a process sector implementation of IEC 61508:2010.

The contents of the corrigendum of September 2016 have been included in this copy.

Life cycle


IEC 61511-1:2016 ED2
60.60 Standard published
Feb 24, 2016


Corrected by
IEC 61511-1:2016/COR1:2016 ED2

Amended by
IEC 61511-1:2016/AMD1:2017 ED2