{"id":2882,"date":"2020-10-07T06:20:38","date_gmt":"2020-10-07T06:20:38","guid":{"rendered":"https:\/\/3.212.105.250\/?p=2882"},"modified":"2025-07-26T16:48:03","modified_gmt":"2025-07-26T22:48:03","slug":"principales-causes-de-defaillance-des-systemes-de-controle-par-automate","status":"publish","type":"post","link":"https:\/\/vm6fr4whzn6.c.updraftclone.com\/fr_fr\/2020\/10\/07\/principales-causes-de-defaillance-des-systemes-de-controle-par-automate\/","title":{"rendered":"Principales causes de d\u00e9faillance des syst\u00e8mes de contr\u00f4le PLC"},"content":{"rendered":"<p>PLC est l'acronyme de programmable logic controller (contr\u00f4leur logique programmable). Un automate traduit les virgules pour que les machines les comprennent. Sans API, les actions que les humains souhaitent que les machines effectuent seraient impossibles \u00e0 d\u00e9chiffrer par la machine. L'automate traduit les informations qu'une personne fournit \u00e0 une machine, par exemple en appuyant sur un bouton, et les transforme en un code qui dirige la machine vers la commande donn\u00e9e. Les automates programmables ont \u00e9t\u00e9 d\u00e9velopp\u00e9s pour la premi\u00e8re fois \u00e0 la fin des ann\u00e9es 1960 et sont devenus de plus en plus complexes. C'est gr\u00e2ce aux automates que les machines peuvent accomplir des t\u00e2ches sp\u00e9cifiques. Certains probl\u00e8mes subsistent dans les automates, et d'autres se d\u00e9veloppent \u00e0 mesure que le codage devient plus complexe. Lorsque l'automate d'une machine tombe en panne, la machine ne peut plus interpr\u00e9ter les t\u00e2ches qu'elle doit accomplir et ne fonctionne donc plus normalement. Cette situation peut \u00eatre pr\u00e9judiciable \u00e0 une op\u00e9ration dans des applications industrielles, car elle entra\u00eene de nombreux temps d'arr\u00eat impr\u00e9vus. D\u00e9couvrez les principales causes de d\u00e9faillance des syst\u00e8mes de contr\u00f4le PLC afin de mieux prot\u00e9ger vos installations.<\/p>\n<h2>D\u00e9faillance du module d'entr\u00e9e\/sortie<\/h2>\n<p>C'est la raison la plus fr\u00e9quente des pannes d'automates. Un signe r\u00e9v\u00e9lateur de la d\u00e9faillance d'un syst\u00e8me PLC d'entr\u00e9e\/sortie est l'arr\u00eat soudain du processus ou une performance irr\u00e9guli\u00e8re. Cela est d\u00fb au fait que le syst\u00e8me de contr\u00f4le de l'automate attend un signal pour le guider dans une s\u00e9quence programm\u00e9e, mais que le signal n'est pas en mesure de l'atteindre correctement.<\/p>\n<p>Lorsque cela se produit, l'ing\u00e9nieur doit d\u00e9terminer l'endroit o\u00f9 la s\u00e9quence s'est arr\u00eat\u00e9e \u00e0 l'origine. Pour ce faire, il explore g\u00e9n\u00e9ralement le logiciel afin de localiser le probl\u00e8me \u00e0 un point sp\u00e9cifique du module d'entr\u00e9e\/sortie.<\/p>\n<p>Une fois le point d'entr\u00e9e\/sortie identifi\u00e9, l'ing\u00e9nieur peut remonter \u00e0 la cause initiale du probl\u00e8me. Il s'agit g\u00e9n\u00e9ralement d'erreurs de configuration de l'automate, de disjoncteurs triples, de d\u00e9faillances de l'alimentation en courant continu, de probl\u00e8mes de c\u00e2blage ou m\u00eame d'un bornier mal fix\u00e9. Pour r\u00e9soudre ce probl\u00e8me, l'ing\u00e9nieur devra avoir des pi\u00e8ces de rechange \u00e0 port\u00e9e de main.<\/p>\n<p>L'ensemble de ce processus vise \u00e0 trouver le d\u00e9calage entre la situation interne, c'est-\u00e0-dire ce que l'automate \"pense\" ou interpr\u00e8te, et la situation externe, c'est-\u00e0-dire ce qui se passe r\u00e9ellement.<\/p>\n<h2>Bruit \u00e9lectrique Interf\u00e9rence<\/h2>\n<p>Les interf\u00e9rences \u00e9lectriques peuvent avoir un impact important sur le syst\u00e8me de contr\u00f4le PlC. Cela se produit g\u00e9n\u00e9ralement lorsqu'il y a des interf\u00e9rences de signaux \u00e9trangers provenant d'interf\u00e9rences \u00e9lectromagn\u00e9tiques ou d'interf\u00e9rences de radiofr\u00e9quences.<\/p>\n<p>Pour \u00e9viter les interf\u00e9rences \u00e9lectriques, veillez \u00e0 ranger les gros moteurs ou les machines similaires loin du syst\u00e8me PLC. Le risque d'interf\u00e9rence augmente \u00e9galement en cas d'orage. Les antennes et les \u00e9metteurs portatifs utilis\u00e9s \u00e0 proximit\u00e9 d'un automate constituent d'autres causes d'interf\u00e9rences \u00e9lectriques. Cela cr\u00e9e des interf\u00e9rences de fr\u00e9quence radio. Chacun de ces probl\u00e8mes peut entra\u00eener des dommages importants et co\u00fbteux \u00e0 r\u00e9parer. L'id\u00e9al est d'\u00e9viter compl\u00e8tement les interf\u00e9rences dues au bruit \u00e9lectrique. Discuter des options possibles avec un ing\u00e9nieur qualifi\u00e9 est la meilleure m\u00e9thode pour pr\u00e9venir les d\u00e9faillances des syst\u00e8mes de contr\u00f4le PLC dues aux interf\u00e9rences du bruit \u00e9lectrique.<\/p>\n<h2>Probl\u00e8mes d'alimentation \u00e9lectrique<\/h2>\n<p>Les probl\u00e8mes d'alimentation \u00e9lectrique sont \u00e9galement une cause fr\u00e9quente de d\u00e9faillance des syst\u00e8mes de contr\u00f4le PLC. Les syst\u00e8mes de contr\u00f4le PLC ont besoin d'un flux constant d'\u00e9nergie ou d'une alimentation \u00e9lectrique. <a href='https:\/\/vm6fr4whzn6.c.updraftclone.com\/fr_fr\/domaines-de-consultation\/lenergie-electrique\/services-de-conception\/'>l'\u00e9lectricit\u00e9 fonctionne comme pr\u00e9vu<\/a>. En cas de perte ou de fluctuation de l'alimentation \u00e9lectrique, l'automate ne peut plus fonctionner correctement, et des interruptions aussi fr\u00e9quentes peuvent entra\u00eener une panne compl\u00e8te du syst\u00e8me. Les probl\u00e8mes d'alimentation \u00e9lectrique peuvent \u00eatre dus \u00e0 une perte de courant, \u00e0 des pannes de courant, \u00e0 une d\u00e9faillance du r\u00e9seau, \u00e0 des c\u00e2bles anciens ou effiloch\u00e9s, \u00e0 des connexions l\u00e2ches ou \u00e0 d'autres facteurs. <a href='https:\/\/vm6fr4whzn6.c.updraftclone.com\/fr_fr\/2022\/06\/17\/risques-electriques-courants-sur-le-lieu-de-travail\/'>\u00e9lectricit\u00e9 courante<\/a> probl\u00e8mes. Bien que nombre de ces probl\u00e8mes soient pratiquement in\u00e9vitables, il existe des moyens de prot\u00e9ger vos syst\u00e8mes de contr\u00f4le PLC, car les coupures de courant fr\u00e9quentes peuvent choquer le syst\u00e8me et entra\u00eener des pertes de donn\u00e9es importantes, difficiles et co\u00fbteuses \u00e0 r\u00e9parer.<\/p>\n<p>Parmi les m\u00e9thodes d'\u00e9vitement, citons l'installation d'une source d'alimentation de secours con\u00e7ue pour s'activer lorsque la source d'alimentation principale est d\u00e9faillante ou subit des interruptions. Une autre m\u00e9thode consiste \u00e0 faire appel \u00e0 un \u00e9lectricien qualifi\u00e9. <a href='https:\/\/vm6fr4whzn6.c.updraftclone.com\/fr_fr\/2023\/04\/12\/8-tendances-de-lingenierie-electronique-qui-faconneront-lavenir\/'>l'ing\u00e9nieur inspecte et planifie pour l'avenir<\/a>. Les ing\u00e9nieurs peuvent \u00e9galement conserver des batteries dans leurs syst\u00e8mes PLC. Ces batteries permettent de maintenir le syst\u00e8me en fonctionnement pendant de courtes p\u00e9riodes entre les petites pannes et les probl\u00e8mes.<\/p>\n<h2>Questions de communication<\/h2>\n<p>Les syst\u00e8mes de contr\u00f4le PLC n\u00e9cessitent une communication constante avec les dispositifs environnants et connect\u00e9s. En cas d'\u00e9chec de la communication, les appareils ne pourront pas comprendre les t\u00e2ches qui leur incombent, car le syst\u00e8me PLC ne sera pas en mesure de communiquer efficacement avec eux. Cette communication est g\u00e9n\u00e9ralement facilit\u00e9e par des c\u00e2bles Ethernet dot\u00e9s de connexions stables et s\u00fbres.<\/p>\n<p>Pour \u00e9viter ces probl\u00e8mes, le PLC <a href='https:\/\/vm6fr4whzn6.c.updraftclone.com\/fr_fr\/2025\/07\/25\/mise-en-oeuvre-de-lapprentissage-automatique-pour-la-maintenance-predictive-des-systemes-de-protection-cathodique\/'>les syst\u00e8mes doivent \u00eatre r\u00e9guli\u00e8rement inspect\u00e9s et faire l'objet d'un entretien r\u00e9gulier<\/a>. Cette op\u00e9ration doit \u00eatre effectu\u00e9e par un ing\u00e9nieur qualifi\u00e9 qui peut s'assurer que le r\u00e9seau de communication est install\u00e9 correctement et que tous les appareils connect\u00e9s envoient des signaux corrects aux autres.<\/p>\n<p>Les probl\u00e8mes de communication peuvent entra\u00eener d'importants temps d'arr\u00eat pour les installations qui d\u00e9pendent de syst\u00e8mes de contr\u00f4le PLC.<\/p>\n<h2>M\u00e9moire corrompue<\/h2>\n<p>D'autres facteurs externes au syst\u00e8me de contr\u00f4le PLC peuvent \u00e9galement entra\u00eener une alt\u00e9ration de la m\u00e9moire. Lorsque la m\u00e9moire d'un syst\u00e8me de contr\u00f4le PLC est corrompue, le code du PLC peut devenir illisible, ce qui peut entra\u00eener un arr\u00eat involontaire. Lorsque ce probl\u00e8me survient, il n'y a pas de solution facile s'il n'y a pas de sauvegarde des informations et des donn\u00e9es sur un dispositif de stockage. Pour \u00e9viter une panne totale, il est pr\u00e9f\u00e9rable de conserver une copie des donn\u00e9es sur un dispositif stock\u00e9 dans un endroit s\u00fbr, loin de toute interf\u00e9rence potentielle, des temp\u00e9ratures extr\u00eames et de l'humidit\u00e9.<\/p>\n<p>Il existe de nombreuses causes de d\u00e9faillance des syst\u00e8mes de contr\u00f4le PLC dont il faut se m\u00e9fier dans une op\u00e9ration. Contactez Dreiym Engineering d\u00e8s aujourd'hui pour une <a href='https:\/\/vm6fr4whzn6.c.updraftclone.com\/fr_fr\/2023\/06\/09\/quand-obtenir-une-analyse-de-la-charge-electrique-residentielle\/'>analyse de la charge \u00e9lectrique<\/a> l'enqu\u00eate. Dans ces enqu\u00eates, nos professionnels\u00a0<a href=\"https:\/\/vm6fr4whzn6.c.updraftclone.com\/fr_fr\/\">nace cp4<\/a>-Les ing\u00e9nieurs certifi\u00e9s de l'entreprise effectuent une \u00e9tude du syst\u00e8me de distribution \u00e9lectrique de votre \u00e9tablissement afin de d\u00e9terminer l'\u00e9quilibre ou le d\u00e9s\u00e9quilibre du syst\u00e8me. Nous pouvons ensuite proc\u00e9der \u00e0 une \u00e9valuation de la charge \u00e9lectrique, en commen\u00e7ant par la cr\u00e9ation de listes de charges \u00e9lectriques et de profils de charges critiques. Nous analysons ensuite la capacit\u00e9 de votre installation et les dispositions disponibles pour une croissance future afin de pouvoir d\u00e9panner les syst\u00e8mes surcharg\u00e9s aujourd'hui et \u00e0 l'avenir.<\/p>\n<p>Contactez-nous d\u00e8s aujourd'hui pour un <a href='https:\/\/vm6fr4whzn6.c.updraftclone.com\/fr_fr\/2023\/06\/09\/quand-obtenir-une-analyse-de-la-charge-electrique-residentielle\/'>analyse de la charge \u00e9lectrique<\/a> de votre \u00e9tablissement ou m\u00eame de votre domicile si vous rencontrez des probl\u00e8mes de facturation, d'utilisation de l'\u00e9lectricit\u00e9 ou d'autres probl\u00e8mes li\u00e9s \u00e0 l'\u00e9lectricit\u00e9. Notre objectif est d'adapter votre exp\u00e9rience \u00e0 vos besoins, non seulement pour identifier et r\u00e9soudre les probl\u00e8mes actuels, mais aussi pour planifier l'avenir afin d'\u00e9viter les probl\u00e8mes.<\/p>\n<img decoding=\"async\" class=\"aligncenter wp-image-3989 size-full\" src=\"https:\/\/vm6fr4whzn6.c.updraftclone.com\/wp-content\/uploads\/2020\/10\/PLC-control-system-failure.jpg\" alt=\"Principales causes de d\u00e9faillance des syst\u00e8mes de contr\u00f4le PLC\" width=\"800\" height=\"2000\" srcset=\"https:\/\/vm6fr4whzn6.c.updraftclone.com\/wp-content\/uploads\/2020\/10\/PLC-control-system-failure.jpg 800w, https:\/\/vm6fr4whzn6.c.updraftclone.com\/wp-content\/uploads\/2020\/10\/PLC-control-system-failure-120x300.jpg 120w, https:\/\/vm6fr4whzn6.c.updraftclone.com\/wp-content\/uploads\/2020\/10\/PLC-control-system-failure-768x1920.jpg 768w, https:\/\/vm6fr4whzn6.c.updraftclone.com\/wp-content\/uploads\/2020\/10\/PLC-control-system-failure-614x1536.jpg 614w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/>","protected":false},"excerpt":{"rendered":"<p>PLC is an acronym for programmable logic controller. A PLC translates commas for machines to understand. Without PLC, actions which humans desire machines to make would be impossible for the machine to decipher. PLC translates the information a person provides a machine, such as a push of a button, and turns it into code that [&hellip;]<\/p>\n","protected":false},"author":8,"featured_media":3510,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_mbp_gutenberg_autopost":false,"_pgmb_is_evergreen":true,"_pgmb_ap_template_id":0,"iawp_total_views":358,"footnotes":""},"categories":[6],"tags":[],"class_list":["post-2882","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-forensic"],"acf":[],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO Pro 4.9.6.2 - aioseo.com -->\n\t<meta name=\"description\" content=\"PLC is an acronym for programmable logic controller. A PLC translates commas for machines to understand. Without PLC, actions which humans desire machines to m\" \/>\n\t<meta name=\"robots\" content=\"noindex, nofollow, max-image-preview:large\" \/>\n\t<meta name=\"author\" content=\"Angela Jones\"\/>\n\t<link rel=\"canonical\" href=\"https:\/\/vm6fr4whzn6.c.updraftclone.com\/fr_fr\/2020\/10\/07\/principales-causes-de-defaillance-des-systemes-de-controle-par-automate\/\" \/>\n\t<meta name=\"generator\" content=\"All in One SEO Pro (AIOSEO) 4.9.6.2\" \/>\n\t\t<meta property=\"og:locale\" content=\"fr_FR\" \/>\n\t\t<meta property=\"og:site_name\" content=\"Dreiym Engineering PLLC \u00bb Electrical and Corrosion Experts\" \/>\n\t\t<meta property=\"og:type\" content=\"article\" \/>\n\t\t<meta property=\"og:title\" content=\"Top Causes of PLC Control System Failure\" \/>\n\t\t<meta property=\"og:description\" content=\"PLC is an acronym for programmable logic controller. A PLC translates commas for machines to understand. Without PLC, actions which humans desire machines to m\" \/>\n\t\t<meta property=\"og:url\" content=\"https:\/\/vm6fr4whzn6.c.updraftclone.com\/fr_fr\/2020\/10\/07\/principales-causes-de-defaillance-des-systemes-de-controle-par-automate\/\" \/>\n\t\t<meta property=\"og:image\" content=\"https:\/\/vm6fr4whzn6.c.updraftclone.com\/wp-content\/uploads\/2020\/10\/Top-Causes-of-PLC-Control-System-Failure.jpg\" \/>\n\t\t<meta property=\"og:image:secure_url\" content=\"https:\/\/vm6fr4whzn6.c.updraftclone.com\/wp-content\/uploads\/2020\/10\/Top-Causes-of-PLC-Control-System-Failure.jpg\" \/>\n\t\t<meta property=\"og:image:width\" content=\"708\" \/>\n\t\t<meta property=\"og:image:height\" content=\"425\" \/>\n\t\t<meta property=\"article:published_time\" content=\"2020-10-07T06:20:38+00:00\" \/>\n\t\t<meta property=\"article:modified_time\" content=\"2025-07-26T22:48:03+00:00\" \/>\n\t\t<script type=\"application\/ld+json\" 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