IEC 62061-ed.2.0

Podrobné informace

Označení: IEC 62061-ed.2.0

Datum vydání: 22.03.2021

Stran: 304

Země: Mezinárodní technická norma

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Anotace

IEC 62061:2021 specifies requirements and makes recommendations for the design, integration and validation of safety-related control systems (SCS) for machines. It is applicable to control systems used, either singly or in combination, to carry out safety functions on machines that are not portable by hand while working, including a group of machines working together in a coordinated manner. This document is a machinery sector specific standard within the framework of IEC 61508 (all parts). The design of complex programmable electronic subsystems or subsystem elements is not within the scope of this document. The main body of this sector standard specifies general requirements for the design, and verification of a safety-related control system intended to be used in high/continuous demand mode. This document: – is concerned only with functional safety requirements intended to reduce the risk of hazardous situations; – is restricted to risks arising directly from the hazards of the machine itself or from a group of machines working together in a coordinated manner; This document does not cover – electrical hazards arising from the electrical control equipment itself (e.g. electric shock - see IEC 60204-1); – other safety requirements necessary at the machine level such as safeguarding; – specific measures for security aspects – see IEC TR 63074. This document is not intended to limit or inhibit technological advancement. IEC 62061:2021 cancels and replaces the first edition, published in 2005, Amendment 1:2012 and Amendment 2:2015. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: – structure has been changed and contents have been updated to reflect the design process of the safety function, – standard extended to non-electrical technologies, – definitions updated to be aligned with IEC 61508-4, – functional safety plan introduced and configuration management updated (Clause 4), – requirements on parametrization expanded (Clause 6), – reference to requirements on security added (Subclause 6.8), – requirements on periodic testing added (Subclause 6.9), – various improvements and clarification on architectures and reliability calculations (Clause 6 and Clause 7), – shift from "SILCL" to "maximum SIL" of a subsystem (Clause 7), – use cases for software described including requirements (Clause 8), – requirements on independence for software verification (Clause 8) and validation activities (Clause 9) added, – new informative annex with examples (Annex G), – new informative annexes on typical MTTFD values, diagnostics and calculation methods for the architectures (Annex C, Annex D and Annex H). LIEC 62061:2021 specifie les exigences et donne des recommandations pour la conception, lintegration et la validation des systemes de commande relatifs a la securite (SCS) pour les machines. Elle sapplique aux systemes de commande utilises, separement ou en combinaison, pour assurer les fonctions de securite de machines qui ne sont pas portables a la main en fonctionnement, y compris un groupe de machines fonctionnant ensemble dune maniere coordonnee. Le present document est specifique au secteur des machines dans le cadre de lIEC 61508 (toutes les parties). La conception de sous-systemes ou delements de sous-systeme electroniques programmables complexes ne releve pas du domaine dapplication du present document. Ces elements relevent du domaine dapplication de lIEC 61508 ou de normes qui lui sont associees. Le present document: – se concerne que les exigences de securite fonctionnelle destinees a reduire le risque de situations dangereuses; – se limite aux risques resultant directement des phenomenes dangereux de la machine elle meme ou dun groupe de machines fonctionnant ensemble dune maniere coordonnee; Le present document ne concerne pas – les phenomenes dangereux electriques provenant du materiel de commande electrique lui meme (par exemple choc electrique – voir lIEC 60204-1); – les autres exigences relatives a la securite necessaires au niveau de la machine (la protection par protecteur, par exemple); – les mesures particulieres pour les aspects lies a la securite – voir lIEC TR 63074. Le present document nest pas destine a limiter ou inhiber les progres technologiques. LIEC 62061:2021 annule et remplace la premiere edition parue en 2005, l’Amendement 1:2012 ainsi que l’Amendement 2:2015. Cette edition constitue une revision technique. Cette edition inclut les modifications techniques majeures suivantes par rapport a ledition precedente: – la structure a ete modifiee et le contenu a ete mis a jour pour refleter le processus de conception de la fonction de securite, – la norme a ete etendue aux technologies non electriques, – definitions mises a jour pour etre alignees sur lIEC 61508-4, – plan de securite fonctionnelle introduit et gestion de configuration mise a jour (Article 4), – exigences relatives au parametrage etendues (Article 6), – reference aux exigences relatives a la securite ajoutee (Paragraphe 6.8) – exigences relatives aux essais periodiques ajoutees (Paragraphe 6.9), – differentes ameliorations et clarifications relatives aux architectures et aux calculs de fiabilite (Article 6 et Article 7), – decalage entre le "SILCL" et le "SIL maximal" dun sous-systeme (Article 7), – cas dutilisation pour les logiciels decrits, y compris les exigences (Article 8), – exigences relatives a lindependance des activites de verification (Article 8) et de validation (Article 9) du logiciel ajoutees, – nouvelle annexe informative avec des exemples (Annex G), – nouvelles annexes informatives relatives aux valeurs MTTFD, aux diagnostics et aux methodes de calcul des architectures (Annex C, Annex D et Annex H).