{"id":32884,"date":"2023-05-08T10:59:40","date_gmt":"2023-05-08T09:59:40","guid":{"rendered":"https:\/\/www.gt-engineering.it\/normative-tecniche\/%tipologia_normativa%\/en-iso-13849-1-performance-level-estimation\/ciao-2-2-2-2\/"},"modified":"2023-08-11T09:36:09","modified_gmt":"2023-08-11T08:36:09","slug":"category-2","status":"publish","type":"normativa_tecnica","link":"https:\/\/www.gt-engineering.it\/en\/technical-standards\/en-iso-standards\/en-iso-13849-1-performance-level-estimation\/category-2\/","title":{"rendered":"Category 2"},"content":{"rendered":"\n\n    \n        <section\n            data-name=\"Contenuto testuale con immagine\"\n            class=\"bow-gte-testo-media u-spacer-base\"\n            id=\"\"\n        >\n            \n<div class=\"o-text-media px-side-spacer sm:px-side-spacer-sm lg:px-side-spacer-tablet 2xl:px-side-spacer-desktop flex flex-wrap items-start flex-col\">\n\n    \n        \n        \n                    <div class=\"relative w-full\">\n                \n<div class=\"a-text font-text text-base normal mt-8 first:mt-0 space-y-4\">\n    <p>In Category 2, both Basic and Well-tried safety principles must be followed.<br \/>\nIt is a <strong>single channel architectur<\/strong>e with the monitoring of each subsystem done, in its most general form, by an external unit called<strong> Test Equipment<\/strong>. In case a fault is detected, the TE signals it to the \u201coutside world\u201d thanks to an output: the OTE.<br \/>\nHereafter how the Safety-related block diagram looks like.<\/p>\n<\/div>            <\/div>\n        \n        \n        \n\n    <\/div>\n        <\/section>\n\n    \n\n\n\n\n    \n        \n    \n\n\n\n\n    \n        \n    \n","protected":false},"excerpt":{"rendered":"<p>&nbsp;<\/p>\n<p>The Mean Time To Failure (MTTF) is a statistical parameter related to the reliability of the components used in the safety system.<\/p>\n<p>It represents the av&#8230;<\/p>\n","protected":false},"author":1,"featured_media":42042,"parent":3245,"menu_order":4,"template":"","meta":{"_acf_changed":false,"footnotes":""},"normative-tecniche":[57],"class_list":["post-32884","normativa_tecnica","type-normativa_tecnica","status-publish","has-post-thumbnail","hentry","tipologia_normativa-en-iso-standards"],"acf":{"sottotitolo":"Il Mean Time To Failure (MTTF)","allegati":null},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Annex C: MTTF calculation<\/title>\n<meta name=\"description\" content=\"\u00a0 The Mean Time To Failure (MTTF) is a statistical parameter related to the reliability of the components used in the safety system. 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