NameStandard
Electrical equipment for measurement, control and laboratory use –
EMC requirements – Part 3-1: Immunity requirements for safety-re-
lated systems and for equipment intended to perform safety-related
functions (functional safety) – General industrial applications
IEC 61326-3-1:2017
Functional safety of electrical/electronic/programmable electronic
safety-related systems – Part 1: General requirements
IEC 61508-1:2010
Functional safety of electrical/electronic/programmable electronic
safety-related systems – Part 2: Requirements for electrical/electron-
ic/programmable electronic safety-related systems
IEC 61508-2:2010
Functional safety – Safety instrumented systems for the process in-
dustry sector
IEC 61511-1:2017
Adjustable speed electrical power drive systems – Part 5-2: Safety
requirements – Functional
IEC 61800-5-2:2016
EN 61800-5-2:2007
Safety of machinery – Functional safety of safety-related control
systems
EN IEC 62061:2021
Safety of machinery – Safety-related parts of control systems – Part 1:
General principles for design
EN ISO 13849-1:2015
Safety of machinery – Safety-related parts of control systems – Part
2: Validation
EN ISO 13849-2:2012
The function also corresponds to Prevention of unexpected start-up as specified by
EN ISO 14118:2018 (ISO 14118:2017), and Uncontrolled stop (stop category 0) as
specified in EN/IEC 60204-1.
■ Compliance with the European Machinery Directive and the UK Supply
of Machinery (Safety) Regulations
The Declarations of conformity are shown at the end of this chapter.
222 The Safe torque off function