{"id":37967,"date":"2023-02-22T11:40:56","date_gmt":"2023-02-22T10:40:56","guid":{"rendered":"https:\/\/www.gt-engineering.it\/?post_type=approfondimento&#038;p=37967"},"modified":"2026-03-11T17:44:35","modified_gmt":"2026-03-11T16:44:35","slug":"la-reinitialisation-manuelle-est-elle-une-fonction-de-securite","status":"publish","type":"approfondimento","link":"https:\/\/www.gt-engineering.it\/fr\/approfondissement\/la-securite-fonctionnelle\/la-reinitialisation-manuelle-est-elle-une-fonction-de-securite\/","title":{"rendered":"La r\u00e9initialisation manuelle est-elle une fonction de s\u00e9curit\u00e9 ?"},"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 md:block\">\n\n    \n                    <div class=\"mb-6 relative w-full md:mb-4 lg:mb-8 xl:mb-9\">\n                \n        <div                class=\"m-headings\"\n            >\n    \n    \n<h2 class=\"a-heading text-primary font-heading text-2xl lg:text-3xl xl:text-4xl font-normal mt-2 first:mt-0\">\n                    La question    <\/h2>\n        <\/div>\n                <\/div>\n        \n                    <div\n                class=\"h-auto mb-6 md:mb-4 lg:mb-8 xl:mb-9  float-right ml-6 md:ml-4 lg:ml-8 xl:ml-9 overflow-hidden shadow-content-image w-full md:w-1\/4\"\n            >\n                \r\n\r\n    \r\n        \r\n            \r\n                \r\n                    <picture\r\n                        class=\"\"\r\n                                            >\r\n                                                                                                        <source\r\n                                media=\"(max-width: 150px)\"\r\n                                width=\"150\"\r\n                                height=\"150\"\r\n                                srcset=\"https:\/\/www.gt-engineering.it\/wp-content\/uploads\/2023\/07\/m22-dz-b-gb14-push-button-reset.jpg-150x150.webp\"\r\n                                type=\"image\/webp\"\r\n                            \/>\r\n                                                                                <source\r\n                                media=\"(max-width: 300px)\"\r\n                                width=\"300\"\r\n                                height=\"300\"\r\n                                srcset=\"https:\/\/www.gt-engineering.it\/wp-content\/uploads\/2023\/07\/m22-dz-b-gb14-push-button-reset.jpg-300x300.webp\"\r\n                                type=\"image\/webp\"\r\n                            \/>\r\n                                                                                <source\r\n                                media=\"(max-width: 458px)\"\r\n                                width=\"458\"\r\n                                height=\"458\"\r\n                                srcset=\"https:\/\/www.gt-engineering.it\/wp-content\/uploads\/2023\/07\/m22-dz-b-gb14-push-button-reset.jpg.webp\"\r\n                                type=\"image\/webp\"\r\n                            \/>\r\n                                                                                <source\r\n                                media=\"(max-width: 458px)\"\r\n                                width=\"458\"\r\n                                height=\"458\"\r\n                                srcset=\"https:\/\/www.gt-engineering.it\/wp-content\/uploads\/2023\/07\/m22-dz-b-gb14-push-button-reset.jpg.webp\"\r\n                                type=\"image\/webp\"\r\n                            \/>\r\n                                                                            <img\r\n                            class=\"a-image transparent border-image h-auto  w-full\"\r\n                                                        srcset=\"https:\/\/www.gt-engineering.it\/wp-content\/uploads\/2023\/07\/m22-dz-b-gb14-push-button-reset.jpg.webp\"\r\n                                                        title=\"m22-dz-b-gb14-push-button-reset.jpg\"\r\n                                                        type=\"image\/webp\"\r\n                        \/>\r\n                    <\/picture>\r\n\r\n                \r\n\r\n                    \r\n    \r\n            <\/div>\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><strong>Le bouton de r\u00e9initialisation <\/strong>d&rsquo;une machine doit-il \u00eatre g\u00e9r\u00e9 par une logique de s\u00e9curit\u00e9 ou peut-il \u00eatre l&rsquo;une des nombreuses entr\u00e9es de l&rsquo;automate programmable ?<\/p>\n<p>La question peut \u00eatre r\u00e9\u00e9crite dans un langage plus correct en demandant <strong>si la r\u00e9initialisation est une fonction de s\u00e9curit\u00e9.<\/strong><\/p>\n<\/div>            <\/div>\n        \n        \n                <div class=\"clear-both\"><\/div>\n        \n\n    <\/div>\n        <\/section>\n\n    \n\n\n\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 md:block\">\n\n    \n                    <div class=\"mb-6 relative w-full md:mb-4 lg:mb-8 xl:mb-9\">\n                \n        <div                class=\"m-headings\"\n            >\n    \n    \n<h2 class=\"a-heading text-primary font-heading text-2xl lg:text-3xl xl:text-4xl font-normal mt-2 first:mt-0\">\n                    Consid\u00e9rations 1    <\/h2>\n        <\/div>\n                <\/div>\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>La r\u00e9ponse est que, dans plusieurs applications,<strong> la r\u00e9initialisation est une fonction de s\u00e9curit\u00e9<\/strong> et qu&rsquo;elle ne peut donc pas \u00eatre achemin\u00e9e via l&rsquo;automate programmable. O\u00f9 cela est-il \u00e9crit ? C&rsquo;est indiqu\u00e9 dans la norme EN ISO 13849-1 : 2023.<\/p>\n<blockquote><p><em>[ISO 13849-1: 2023] <strong>5.2.2 Exigences relatives aux fonctions de s\u00e9curit\u00e9 sp\u00e9cifiques<\/strong><\/em><\/p>\n<p><em>5.2.2.3 <strong>Fonction de r\u00e9armement manuel<\/strong>. <\/em><em>Le r\u00e9tablissement de la fonction de s\u00e9curit\u00e9 par la r\u00e9initialisation du dispositif de protection annule l&rsquo;ordre d&rsquo;arr\u00eat.<\/em><\/p>\n<p><em>Si l&rsquo;\u00e9valuation des risques l&rsquo;indique, cette annulation de la commande d&rsquo;arr\u00eat doit \u00eatre confirm\u00e9e par une action manuelle distincte et d\u00e9lib\u00e9r\u00e9e (r\u00e9armement manuel).<\/em><\/p><\/blockquote>\n<p><strong>L&rsquo;\u00e9valuation des risques<\/strong> peut indiquer que la r\u00e9initialisation est une fonction de s\u00e9curit\u00e9 lorsqu&rsquo;il existe un <a href=\"https:\/\/www.gt-engineering.it\/fr\/approfondissement\/la-securite-des-machines\/espace-protege\/\">espace prot\u00e9g\u00e9e<\/a> pr\u00e9sentant un risque d&rsquo;acc\u00e8s de l&rsquo;ensemble du corps.<br \/>\n<strong>Une zone robotis\u00e9e prot\u00e9g\u00e9e est un cas typique.<\/strong><\/p>\n<\/div>            <\/div>\n        \n        \n                <div class=\"clear-both\"><\/div>\n        \n\n    <\/div>\n        <\/section>\n\n    \n\n\n\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 md:block\">\n\n    \n        \n                    <div\n                class=\"h-auto mb-6 md:mb-4 lg:mb-8 xl:mb-9 float-left mr-6 md:mr-4 lg:mr-8 xl:mr-9  overflow-hidden shadow-content-image w-full md:w-1\/2\"\n            >\n                \r\n\r\n    \r\n        \r\n            \r\n                \r\n                    <picture\r\n                        class=\"\"\r\n                                            >\r\n                                                                                                        <source\r\n                                media=\"(max-width: 150px)\"\r\n                                width=\"150\"\r\n                                height=\"150\"\r\n                                srcset=\"https:\/\/www.gt-engineering.it\/wp-content\/uploads\/2023\/07\/Safeguarded.png-150x150.webp\"\r\n                                type=\"image\/webp\"\r\n                            \/>\r\n                                                                                <source\r\n                                media=\"(max-width: 300px)\"\r\n                                width=\"300\"\r\n                                height=\"183\"\r\n                                srcset=\"https:\/\/www.gt-engineering.it\/wp-content\/uploads\/2023\/07\/Safeguarded.png-300x183.webp\"\r\n                                type=\"image\/webp\"\r\n                            \/>\r\n                                                                                <source\r\n                                media=\"(max-width: 768px)\"\r\n                                width=\"768\"\r\n                                height=\"469\"\r\n                                srcset=\"https:\/\/www.gt-engineering.it\/wp-content\/uploads\/2023\/07\/Safeguarded.png-768x469.webp\"\r\n                                type=\"image\/webp\"\r\n                            \/>\r\n                                                                                <source\r\n                                media=\"(max-width: 1024px)\"\r\n                                width=\"1024\"\r\n                                height=\"625\"\r\n                                srcset=\"https:\/\/www.gt-engineering.it\/wp-content\/uploads\/2023\/07\/Safeguarded.png-1024x625.webp\"\r\n                                type=\"image\/webp\"\r\n                            \/>\r\n                                                                            <img\r\n                            class=\"a-image transparent border-image h-auto  w-full\"\r\n                                                        srcset=\"https:\/\/www.gt-engineering.it\/wp-content\/uploads\/2023\/07\/Safeguarded.png.webp\"\r\n                                                        title=\"Safeguarded.png\"\r\n                                                        type=\"image\/webp\"\r\n                        \/>\r\n                    <\/picture>\r\n\r\n                \r\n\r\n                    \r\n    \r\n            <\/div>\n        \n        \n        \n                <div class=\"clear-both\"><\/div>\n        \n\n    <\/div>\n        <\/section>\n\n    \n\n\n\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 md:block\">\n\n    \n        \n                    <div\n                class=\"h-auto mb-6 md:mb-4 lg:mb-8 xl:mb-9  float-right ml-6 md:ml-4 lg:ml-8 xl:ml-9 overflow-hidden shadow-content-image w-full md:w-1\/4\"\n            >\n                \r\n\r\n    \r\n        \r\n            \r\n                \r\n                    <picture\r\n                        class=\"\"\r\n                                            >\r\n                                                                                                        <source\r\n                                media=\"(max-width: 150px)\"\r\n                                width=\"150\"\r\n                                height=\"150\"\r\n                                srcset=\"https:\/\/www.gt-engineering.it\/wp-content\/uploads\/2023\/02\/06-2009-NTM-STM-002-768x1024-1-150x150.jpg.webp\"\r\n                                type=\"image\/webp\"\r\n                            \/>\r\n                                                                                <source\r\n                                media=\"(max-width: 225px)\"\r\n                                width=\"225\"\r\n                                height=\"300\"\r\n                                srcset=\"https:\/\/www.gt-engineering.it\/wp-content\/uploads\/2023\/02\/06-2009-NTM-STM-002-768x1024-1-225x300.jpg.webp\"\r\n                                type=\"image\/webp\"\r\n                            \/>\r\n                                                                                <source\r\n                                media=\"(max-width: 768px)\"\r\n                                width=\"768\"\r\n                                height=\"1024\"\r\n                                srcset=\"https:\/\/www.gt-engineering.it\/wp-content\/uploads\/2023\/02\/06-2009-NTM-STM-002-768x1024-1.jpg.webp\"\r\n                                type=\"image\/webp\"\r\n                            \/>\r\n                                                                                <source\r\n                                media=\"(max-width: 768px)\"\r\n                                width=\"768\"\r\n                                height=\"1024\"\r\n                                srcset=\"https:\/\/www.gt-engineering.it\/wp-content\/uploads\/2023\/02\/06-2009-NTM-STM-002-768x1024-1.jpg.webp\"\r\n                                type=\"image\/webp\"\r\n                            \/>\r\n                                                                            <img\r\n                            class=\"a-image transparent border-image h-auto  w-full\"\r\n                                                        srcset=\"https:\/\/www.gt-engineering.it\/wp-content\/uploads\/2023\/02\/06-2009-NTM-STM-002-768x1024-1.jpg.webp\"\r\n                                                        title=\"06-2009-NTM-STM-002-768&#215;1024\"\r\n                                                        type=\"image\/webp\"\r\n                        \/>\r\n                    <\/picture>\r\n\r\n                \r\n\r\n                    \r\n    \r\n            <\/div>\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>Pour r\u00e9duire le risque, le bouton de r\u00e9initialisation doit r\u00e9pondre \u00e0 un certain nombre de conditions, dont les suivantes :<\/p>\n<ul>\n<li>Depuis sa position \u00e0 l&rsquo;ext\u00e9rieur de la zone prot\u00e9g\u00e9e, il est parfaitement visible que personne ne se trouve \u00e0 l&rsquo;int\u00e9rieur.<\/li>\n<li>Il est utilis\u00e9 comme fonction de s\u00e9curit\u00e9.<\/li>\n<\/ul>\n<p>Le risque qu&rsquo;une personne soit bloqu\u00e9e \u00e0 l&rsquo;int\u00e9rieur de la zone peut \u00eatre r\u00e9duit par d&rsquo;autres m\u00e9thodes : par exemple, par l&rsquo;utilisation de cl\u00e9s personnelles que l&rsquo;op\u00e9rateur doit garder sur lui.<\/p>\n<p>Le r\u00e9armement de la zone de travail d&rsquo;<strong>une machine-outil<\/strong> n&rsquo;est pas n\u00e9cessaire, car il n&rsquo;y a pas de risque d&rsquo;\u00eatre coinc\u00e9 \u00e0 l&rsquo;int\u00e9rieur de la zone prot\u00e9g\u00e9e. Si le fabricant d\u00e9cide n\u00e9anmoins de l&rsquo;installer, elle peut \u00eatre trait\u00e9e comme une fonction de commande normale, et le signal achemin\u00e9 vers l&rsquo;automate. Dans ce cas, il ne s&rsquo;agit pas d&rsquo;une fonction de s\u00e9curit\u00e9 !<\/p>\n<\/div>            <\/div>\n        \n        \n                <div class=\"clear-both\"><\/div>\n        \n\n    <\/div>\n        <\/section>\n\n    \n\n\n\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 md:block\">\n\n    \n                    <div class=\"mb-6 relative w-full md:mb-4 lg:mb-8 xl:mb-9\">\n                \n        <div                class=\"m-headings\"\n            >\n    \n    \n<h2 class=\"a-heading text-primary font-heading text-2xl lg:text-3xl xl:text-4xl font-normal mt-2 first:mt-0\">\n                    Consid\u00e9rations 2    <\/h2>\n        <\/div>\n                <\/div>\n        \n                    <div\n                class=\"h-auto mb-6 md:mb-4 lg:mb-8 xl:mb-9  float-right ml-6 md:ml-4 lg:ml-8 xl:ml-9 overflow-hidden shadow-content-image w-full md:w-1\/3\"\n            >\n                \r\n\r\n    \r\n        \r\n            \r\n                \r\n                    <picture\r\n                        class=\"\"\r\n                                            >\r\n                                                                                                        <source\r\n                                media=\"(max-width: 150px)\"\r\n                                width=\"150\"\r\n                                height=\"150\"\r\n                                srcset=\"https:\/\/www.gt-engineering.it\/wp-content\/uploads\/2023\/02\/immagine-reset-FRA-1-150x150.png\"\r\n                                type=\"image\/png\"\r\n                            \/>\r\n                                                                                <source\r\n                                media=\"(max-width: 300px)\"\r\n                                width=\"300\"\r\n                                height=\"187\"\r\n                                srcset=\"https:\/\/www.gt-engineering.it\/wp-content\/uploads\/2023\/02\/immagine-reset-FRA-1-300x187.png\"\r\n                                type=\"image\/png\"\r\n                            \/>\r\n                                                                                <source\r\n                                media=\"(max-width: 509px)\"\r\n                                width=\"509\"\r\n                                height=\"317\"\r\n                                srcset=\"https:\/\/www.gt-engineering.it\/wp-content\/uploads\/2023\/02\/immagine-reset-FRA-1.png\"\r\n                                type=\"image\/png\"\r\n                            \/>\r\n                                                                                <source\r\n                                media=\"(max-width: 509px)\"\r\n                                width=\"509\"\r\n                                height=\"317\"\r\n                                srcset=\"https:\/\/www.gt-engineering.it\/wp-content\/uploads\/2023\/02\/immagine-reset-FRA-1.png\"\r\n                                type=\"image\/png\"\r\n                            \/>\r\n                                                                            <img\r\n                            class=\"a-image transparent border-image h-auto  w-full\"\r\n                                                        srcset=\"https:\/\/www.gt-engineering.it\/wp-content\/uploads\/2023\/02\/immagine-reset-FRA-1.png\"\r\n                                                        title=\"immagine reset FRA\"\r\n                                                        type=\"image\/png\"\r\n                        \/>\r\n                    <\/picture>\r\n\r\n                \r\n\r\n                    \r\n    \r\n            <\/div>\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>Lorsque la r\u00e9initialisation des dispositifs de protection est consid\u00e9r\u00e9e comme une partie du syst\u00e8me de <strong>commande li\u00e9e \u00e0 la s\u00e9curit\u00e9<\/strong>, parce que sa fonction contribue \u00e0 r\u00e9duire le risque qu\u2019une personne reste non <strong>d\u00e9tect\u00e9e \u00e0 l\u2019int\u00e9rieur d\u2019une zone dangereuse<\/strong>, il est important de souligner que, lorsqu\u2019un op\u00e9rateur active cette fonction, il <strong>doit v\u00e9rifier qu\u2019aucune personne ne se trouve \u00e0 l\u2019int\u00e9rieur de l\u2019espace prot\u00e9g\u00e9.<\/strong><\/p>\n<p>Des situations r\u00e9elles se sont d\u00e9j\u00e0 produites dans lesquelles une personne se trouvait encore \u00e0 l\u2019int\u00e9rieur d\u2019une zone dangereuse tandis qu\u2019un coll\u00e8gue a ferm\u00e9 le portail d\u2019acc\u00e8s et red\u00e9marr\u00e9 la machine. Dans les quelques cas qui nous ont \u00e9t\u00e9 rapport\u00e9s, aucun accident ne s\u2019est produit, mais de tels \u00ab <strong>quasi-accidents<\/strong> \u00bb (near-miss) peuvent facilement conduire \u00e0 <strong>des accidents graves.<\/strong><\/p>\n<p>Pour cette raison, le manuel d\u2019instructions devrait clairement mettre en \u00e9vidence ce risque et informer tout op\u00e9rateur travaillant sur la ligne de production que, <strong>avant de r\u00e9initialiser une barri\u00e8re de s\u00e9curit\u00e9 (AOPD)<\/strong>, par exemple, il doit s\u2019assurer que personne ne se trouve \u00e0 l\u2019int\u00e9rieur de l\u2019espace prot\u00e9g\u00e9.<\/p>\n<p>Afin de renforcer cette exigence de s\u00e9curit\u00e9, nous recommandons de <a href=\"https:\/\/www.gt-engineering.it\/cartelli-per-la-sicurezza\/cartelli-iso-7010-obbligo\/e-pbbligatorio-verificare-l-assenza-di-personale\/\">placer une \u00e9tiquette d\u2019avertissement<\/a> \u00e0 c\u00f4t\u00e9 de chaque bouton de r\u00e9initialisation (<strong>Reset<\/strong>) lorsqu\u2019il remplit une fonction de s\u00e9curit\u00e9.<\/p>\n<\/div>            <\/div>\n        \n        \n                <div class=\"clear-both\"><\/div>\n        \n\n    <\/div>\n        <\/section>\n\n    \n\n\n\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 md:block\">\n\n    \n                    <div class=\"mb-6 relative w-full md:mb-4 lg:mb-8 xl:mb-9\">\n                \n        <div                class=\"m-headings\"\n            >\n    \n    \n<h2 class=\"a-heading text-primary font-heading text-2xl lg:text-3xl xl:text-4xl font-normal mt-2 first:mt-0\">\n                    Consid\u00e9ration 3    <\/h2>\n        <\/div>\n                <\/div>\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>\u00c9tant donn\u00e9 que le <strong>bouton-poussoir utilis\u00e9 pour la fonction de r\u00e9initialisation<\/strong> ne dispose g\u00e9n\u00e9ralement d\u2019aucune donn\u00e9e de fiabilit\u00e9, il est important de r\u00e9duire au minimum le risque de dysfonctionnement. Pour cette raison, en particulier lorsque la fonction de s\u00e9curit\u00e9 r\u00e9initialis\u00e9e revendique un niveau de performance (PL) d ou PL e, il est essentiel que le syst\u00e8me de s\u00e9curit\u00e9 d\u00e9tecte un changement d\u2019\u00e9tat du bouton de r\u00e9initialisation, soit de ouvert \u00e0 ferm\u00e9, soit, de pr\u00e9f\u00e9rence, de ferm\u00e9 \u00e0 ouvert.<\/p>\n<p>Cette exigence garantit que la commande de r\u00e9initialisation est d\u00e9clench\u00e9e par une action d\u00e9lib\u00e9r\u00e9e de l\u2019op\u00e9rateur et contribue \u00e0 pr\u00e9venir des d\u00e9fauts tels qu\u2019un bouton maintenu en permanence actionn\u00e9 ou court-circuit\u00e9.<\/p>\n<p>Une exigence de ce type est incluse dans l\u2019\u00e9dition 2026 de la norme IEC 62046, qui souligne la n\u00e9cessit\u00e9 de d\u00e9tecter un changement d\u2019\u00e9tat pour les dispositifs de r\u00e9initialisation manuelle utilis\u00e9s dans des fonctions de commande li\u00e9es \u00e0 la s\u00e9curit\u00e9.<\/p>\n<blockquote><p><em>[IEC 62046:2026] <strong>6.2.4 Verrouillage de red\u00e9marrage (Restart interlock)<\/strong><\/em><\/p>\n<p><em><br \/>\n[\u2026] La r\u00e9initialisation d\u2019un verrouillage de red\u00e9marrage d\u2019une application SPE constitue toujours une fonction li\u00e9e \u00e0 la s\u00e9curit\u00e9. Des mesures doivent \u00eatre pr\u00e9vues pour r\u00e9duire la probabilit\u00e9 que le verrouillage de red\u00e9marrage soit r\u00e9initialis\u00e9 par une condition de d\u00e9faut transitoire ou permanente.<br \/>\nDe telles mesures peuvent inclure, par exemple, l\u2019exigence d\u2019un signal de front montant et de front descendant dans un intervalle de temps d\u00e9fini (par exemple entre 150 ms et 4 s) provenant d\u2019un dispositif de r\u00e9initialisation actionn\u00e9 manuellement.<\/em><\/p><\/blockquote>\n<\/div>            <\/div>\n        \n        \n                <div class=\"clear-both\"><\/div>\n        \n\n    <\/div>\n        <\/section>\n\n    \n\n\n\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 md:block\">\n\n    \n                    <div class=\"mb-6 relative w-full md:mb-4 lg:mb-8 xl:mb-9\">\n                \n        <div                class=\"m-headings\"\n            >\n    \n    \n<h2 class=\"a-heading text-primary font-heading text-2xl lg:text-3xl xl:text-4xl font-normal mt-2 first:mt-0\">\n                    Conclusion    <\/h2>\n        <\/div>\n                <\/div>\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>En conclusion, la <strong>fonction de r\u00e9initialisation des dispositifs de protection<\/strong> doit \u00eatre trait\u00e9e avec une attention particuli\u00e8re lorsqu\u2019elle fait partie d\u2019un <strong>syst\u00e8me de commande li\u00e9 \u00e0 la s\u00e9curit\u00e9<\/strong>. Les op\u00e9rateurs doivent toujours v\u00e9rifier qu\u2019aucune personne ne se trouve dans l\u2019espace prot\u00e9g\u00e9 avant d\u2019activer la fonction de r\u00e9initialisation, car le non-respect de cette r\u00e8gle peut entra\u00eener des situations dangereuses et des accidents potentiels. Des instructions claires dans le manuel d\u2019utilisation ainsi que des \u00e9tiquettes d\u2019avertissement bien visibles \u00e0 proximit\u00e9 des boutons de r\u00e9initialisation sont donc essentielles pour sensibiliser les op\u00e9rateurs \u00e0 ce risque.<\/p>\n<p>En m\u00eame temps, la mise en \u0153uvre technique de la fonction de r\u00e9initialisation doit garantir un niveau de fiabilit\u00e9 ad\u00e9quat. \u00c9tant donn\u00e9 que les boutons de r\u00e9initialisation ne disposent g\u00e9n\u00e9ralement pas de donn\u00e9es de fiabilit\u00e9, le syst\u00e8me de s\u00e9curit\u00e9 doit d\u00e9tecter un changement d\u2019\u00e9tat du dispositif de r\u00e9initialisation afin d\u2019\u00e9viter les d\u00e9fauts ou les activations involontaires.<\/p>\n<p>Par cons\u00e9quent, lors de la conception ou de l\u2019assemblage d\u2019un tableau de commande pour le compte d\u2019un constructeur de machines, il est essentiel de consulter la personne responsable de l\u2019analyse des risques afin de <strong>v\u00e9rifier si les boutons de r\u00e9initialisation doivent \u00eatre connect\u00e9s \u00e0 un automate de s\u00e9curit\u00e9 (Safety PLC).<\/strong> Cette exigence ne doit jamais \u00eatre consid\u00e9r\u00e9e comme inutile sans une v\u00e9rification appropri\u00e9e.<\/p>\n<\/div>            <\/div>\n        \n        \n                <div class=\"clear-both\"><\/div>\n        \n\n    <\/div>\n        <\/section>\n\n    \n","protected":false},"excerpt":{"rendered":"<p>Le bouton de r\u00e9initialisation d&rsquo;une machine doit-il \u00eatre g\u00e9r\u00e9 par un module de s\u00e9curit\u00e9 ou peut-il \u00eatre l&rsquo;une des nombreuses entr\u00e9es de l&rsquo;automate programmable ?<\/p>\n","protected":false},"author":182,"featured_media":37968,"parent":0,"menu_order":72,"template":"","meta":{"_acf_changed":false,"footnotes":""},"tipologia_approfondimento":[154],"class_list":["post-37967","approfondimento","type-approfondimento","status-publish","has-post-thumbnail","hentry","tipologia_approfondimento-la-securite-fonctionnelle"],"acf":{"sottotitolo":"","allegati":null},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>La r\u00e9initialisation manuelle est-elle une fonction de s\u00e9curit\u00e9 ? 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