SAFETY OF MACHINERY-FUNCTIONAL SAFETY OF SAFETY-RELATED ELECTRICAL, ELECTRONIC AND PROGRAMMABLE ELECTRONIC cONTROLsvSTEMS

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IEC 62061:2005+A1:2012 SAFETY OF MACHINERY -FUNCTIONAL SAFETY OF SAFETY-RELATED ELECTRICAL, ELECTRONIC AND PROGRAMMABLE ELECTRONIC cONTROLsvSTEMS1 ScopeThis 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

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