IEC 62061:2005+A1:2012 SAFETY OF MACHINERY -FUNCTIONAL SAFETY OF SAFETY-RELATED ELECTRICAL, ELECTRONIC AND PROGRAMMABLE ELECTRONIC cONTROLsvSTEMS

IEC 62061:2005+A1:2012 SAFETY OF MACHINERY -FUNCTIONAL SAFETY OF SAFETY-RELATED ELECTRICAL, ELECTRONIC AND PROGRAMMABLE ELECTRONIC cONTROLsvSTEMS
1 Scope
This International Standard specifies requirements and makes recommendations for thedesign，integration and validation of safety-related electrical，electronic and programmableelectronic control systems (SRECS) for machines (see Notes 1 and 2). It is applicable tocontrol systems used,either singly or in combination，to carry out safety-related controlfunctions on machines that are not portable by hand while working，including a group ofmachines working together in a co-ordinated manner.
NOTE 1 In this standard,the term “electrical control systems" is used to stand for "Electrical，Electronic andProgrammable Electronic(E/E/PE) control systems"and"SRECS" is used to stand for “safety-related electrical,electronic and programmable electronic control systems".
NOTE 2 In this standard,it is presumed that the design of complex programmable electronic subsystems orsubsystem elements conforms'to the relevant requirements 'of iEc 61508 and uses Route’1H (seeIEC 61508-2:2010，7.4.4.2). It is considered that Route 2w (see IEC 61508-2:2010，7.4.4.3) is not suitable forgeneral machinery.Therefore, this standard does not deal with Route 2.This standard provides a methodology forthe use, rather than development, of such subsystems and subsystem elements as part of a SRECS.
This standard is an application standard and is not intended to limit or inhibit technologicaladvancement. lt does not cover all the requirements (e.g. guarding, non-electrical interlockingor non-electrical control) that are needed or required by other standards or regulations inorder to safeguard persons from hazards.Each type of machine has unique requirements tobe satisfied to provide adequate safety.
This standard:
- is concerned only with functional safety requirements intended to reduce the risk of injury
or damage to the health of persons in the immediate vicinity of the machine and thosedirectly involved in the use of the machine;
is restricted to risks arising directly from the hazards of the machine itself or from a groupof machines working together in a co-ordinated manner;

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