IEC 62061:2005/COR1:2005
(Corrigendum)Corrigendum 1 - Safety of machinery - Functional safety of safety-related electrical, electronic and programmable electronic control systems
Corrigendum 1 - Safety of machinery - Functional safety of safety-related electrical, electronic and programmable electronic control systems
Corrigendum 1 - Sécurité des machines - Sécurité fonctionnelle des systèmes de commande électriques, électroniques et électroniques programmables relatifs à la sécurité
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Standards Content (Sample)
CEI 62061 IEC 62061
(Première édition – 2005) (First edition – 2005)
Sécurité des machines – Sécurité fonctionnelle Safety of machinery – Functional safety of
des systèmes de commande safety-related electrical, electronic and
électriques, électroniques et électroniques programmable electronic control systems
programmables relatifs à la sécurité
CORRIGENDUM 1
Pa
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– 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;
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– 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;
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This document is not intended to limit or inhibit technological advancement.
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– gives guidelines and specifies additional requirements for specific safety functions based on the methodology of ISO 12100, which are relevant in machinery and respecting typical boundary conditions of machinery;
– considers safety functions which are designed for high demand mode of operation yet are rarely operated, called rarely activated safety functions;
– gives additional information for the calculation of failure rates using other (non-electronic) technologies based e.g. on Weibull distribution, because all the formula defined in IEC 62061 and ISO 13849-1 are based on exponential distribution.
Therefore, the basis for these guidelines and additional requirements is
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– a consideration of typical architectures used for designing safety functions;
– a consideration of modes of operation of safety functions;
– the derivation and evaluation of PFH formulas for subsystems considering the used technology.
This document does not address low demand mode of operation according to IEC 61508.
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