{"id":36878,"date":"2025-11-03T09:48:26","date_gmt":"2025-11-03T01:48:26","guid":{"rendered":"https:\/\/aositerminals.com\/?p=36878"},"modified":"2025-11-03T15:47:41","modified_gmt":"2025-11-03T07:47:41","slug":"unstable-encoder-signal-in-plc","status":"publish","type":"post","link":"https:\/\/aositerminals.com\/fr\/solutions\/unstable-encoder-signal-in-plc\/","title":{"rendered":"Pourquoi les signaux d'encodeur deviennent instables dans les syst\u00e8mes PLC (et comment y rem\u00e9dier)"},"content":{"rendered":"<div class=\"aosi-wz-all1\">\n<p>Dans l'automatisation industrielle moderne, <strong>retour d'encodeur<\/strong> est le c\u0153ur du contr\u00f4le de pr\u00e9cision \u2014 il d\u00e9termine la vitesse, la position et la synchronisation du moteur. Pourtant, les ing\u00e9nieurs sont souvent confront\u00e9s \u00e0 un probl\u00e8me frustrant : le signal de l'encodeur devient instable lorsqu'il est connect\u00e9 \u00e0 un PLC. Les impulsions fluctuent, les valeurs d\u00e9rivent et les machines perdent en pr\u00e9cision.<\/p>\n<p>Cet article explique les principales causes des <strong>signaux d'encodeur instables<\/strong>, comment les interf\u00e9rences se produisent et les moyens les plus efficaces de stabiliser le retour d'impulsions \u00e0 l'aide de modules d'isolation et de distribution.<\/p>\n\n<div class=\"aosi-wz-img1\" style=\"margin-bottom: 40px;\"><img decoding=\"async\" src=\"https:\/\/aositerminals.com\/wp-content\/uploads\/2025\/10\/unstable-encoder-signals.avif\" alt=\"signaux d&#039;encodeur instables\" \/><\/div>\n\n<h2>Causes courantes des signaux d'encodeur instables<\/h2>\n<p>L'instabilit\u00e9 de l'encodeur est g\u00e9n\u00e9ralement caus\u00e9e par <b>bruit \u00e9lectrique<\/b>, <b>boucles de masse<\/b>ou <b>d\u00e9gradation du signal<\/b>.<br>Lorsque les c\u00e2bles d'encodeur passent pr\u00e8s de lignes d'alimentation ou de variateurs de fr\u00e9quence (VFD), les interf\u00e9rences \u00e9lectromagn\u00e9tiques (EMI) d\u00e9forment les impulsions A\/B\/Z. Les diff\u00e9rences de potentiel de masse entre l'encodeur et le PLC peuvent \u00e9galement provoquer <b>une perte de comptage ou des impulsions en double<\/b>.<\/p>\n<p>Dans la plupart des syst\u00e8mes, les signaux instables peuvent \u00eatre att\u00e9nu\u00e9s en utilisant des sorties diff\u00e9rentielles RS422 ou en ajoutant des modules d'isolation. Voir notre article <a href=\"https:\/\/aositerminals.com\/fr\/solutions\/rs422-vs-ttl-encoder-signals\/\">Signaux d'encodeur RS422 vs TTL : lequel est le meilleur pour votre syst\u00e8me d'automatisation<\/a> pour une comparaison plus approfondie.<\/p>\n\n<div class=\"aosi-wz-table2\" style=\"margin-bottom: 40px;\">\n<table class=\"aosi-wz-table1\">\n<tbody>\n<tr>\n<td>\n<b>Cause<\/b>\n<\/td>\n<td>\n<b>Effet<\/b>\n<\/td>\n<td>\n<b>Conseil de diagnostic<\/b>\n<\/td>\n<\/tr>\n<tr>\n<td>EMI<\/td>\n<td>Pics de signal al\u00e9atoires, impulsions manquantes ou suppl\u00e9mentaires<\/td>\n<td>Comparez le bruit de l'encodeur avec la machine en marche\/arr\u00eat<\/td>\n<\/tr>\n<tr>\n<td>Boucles de masse<\/td>\n<td>Pics intermittents, r\u00e9f\u00e9rence de signal flottante<\/td>\n<td>V\u00e9rifiez les diff\u00e9rences de potentiel de masse<\/td>\n<\/tr>\n<tr>\n<td>Blindage insuffisant<\/td>\n<td>Bruit\/ronflement sur le signal, augmentant avec la longueur du c\u00e2ble<\/td>\n<td>Inspectez la continuit\u00e9 du blindage, le cheminement des c\u00e2bles<\/td>\n<\/tr>\n<tr>\n<td>Vibrations m\u00e9caniques<\/td>\n<td>Intervalles, d\u00e9clenchements intempestifs, d\u00e9rive du signal<\/td>\n<td>Observez la r\u00e9ponse pendant le mouvement de la machine<\/td>\n<\/tr>\n<tr>\n<td>Probl\u00e8mes de qualit\u00e9 de c\u00e2ble<\/td>\n<td>Impulsions irr\u00e9guli\u00e8res, perte totale<\/td>\n<td>Essayez un c\u00e2ble de liaison court pour le test<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n\n<h2>Comment le bruit \u00e9lectrique affecte la pr\u00e9cision du PLC<\/h2>\n<p>Le bruit \u00e9lectrique est le tueur silencieux de la pr\u00e9cision du PLC. La distorsion des impulsions, caus\u00e9e par le couplage des lignes d'alimentation, les charges inductives ou la capacit\u00e9 parasite, conduit le PLC \u00e0 voir des impulsions \u00ab fant\u00f4mes \u00bb ou \u00e0 manquer compl\u00e8tement les transitions r\u00e9elles. En contr\u00f4le de position et de vitesse, cela \u00e9quivaut \u00e0 des pas saut\u00e9s, un retour oscillant ou un retard d'axe.<\/p>\n<p>Le \u00ab filtre de bruit d'encodeur \u00bb est une d\u00e9fense essentielle. Il en existe deux types :<\/p>\n<ul>\n<li>Filtres de bruit mat\u00e9riels : circuits physiques qui bloquent les fr\u00e9quences ind\u00e9sirables \u00e0 l'entr\u00e9e du signal. Ils traitent directement les interf\u00e9rences haute fr\u00e9quence et offrent une protection robuste, surtout s'ils sont plac\u00e9s pr\u00e8s de la source.<\/li>\n<li>Filtrage logiciel : les algorithmes c\u00f4t\u00e9 PLC tentent d'ignorer les changements de signal trop rapides ou incoh\u00e9rents pour \u00eatre de v\u00e9ritables impulsions. Cela fonctionne bien pour les d\u00e9fauts mineurs, mais ne peut pas arr\u00eater les fortes interf\u00e9rences au niveau mat\u00e9riel.<\/li>\n<\/ul>\n<p><b>Filtrage du bruit d'encodeur mat\u00e9riel vs logiciel<\/b><\/p>\n\n<div class=\"aosi-wz-table2\">\n<table class=\"aosi-wz-table1\">\n<tbody>\n<tr>\n<td>\n<b>Filtrage<\/b>\n<\/td>\n<td>\n<b>Fonctionnement<\/b>\n<\/td>\n<td>\n<b>Pour<\/b>\n<\/td>\n<td>\n<b>Cons<\/b>\n<\/td>\n<\/tr>\n<tr>\n<td>Filtre mat\u00e9riel<\/td>\n<td>Bloque les EMI au niveau du circuit d'entr\u00e9e<\/td>\n<td>Rapide, efficace<\/td>\n<td>Doit \u00eatre install\u00e9<\/td>\n<\/tr>\n<tr>\n<td>Filtre logiciel<\/td>\n<td>La logique du PLC filtre les impulsions<\/td>\n<td>Simple \u00e0 ajuster<\/td>\n<td>Peut ajouter de la latence, limit\u00e9 contre les EMI fortes<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n\n<p>Pour plus de conseils sur la distribution s\u00fbre des signaux d'encodeur, voir : <a href=\"https:\/\/aositerminals.com\/fr\/solutions\/split-encoder-signal-to-multiple-devices\/\">Comment r\u00e9partir en toute s\u00e9curit\u00e9 un signal d'encodeur vers plusieurs appareils ?<\/a><\/p>\n<p>Le bruit provient \u00e9galement des servomoteurs ou de la commutation de relais \u00e0 proximit\u00e9, qui induisent des tensions transitoires.<\/p>\n<p>Dans les syst\u00e8mes d'emballage ou de convoyage, ces erreurs entra\u00eenent souvent une impression d\u00e9cal\u00e9e, des \u00e9tiquettes mal align\u00e9es ou des \u00e9checs de pr\u00e9hension robotis\u00e9e.<\/p>\n\n<h2>Le r\u00f4le des modules d'isolation et de distribution d'impulsions<\/h2>\n<p>Un <strong>module de distribution d'impulsions d'encodeur<\/strong> agit comme une interface de protection entre l'encodeur et l'automate. Il filtre le bruit et r\u00e9g\u00e9n\u00e8re le signal par isolation optique et pilotes RS422.<\/p>\n\n<div class=\"aosi-wz-img1\"><img decoding=\"async\" src=\"https:\/\/aositerminals.com\/wp-content\/uploads\/2025\/10\/encoder-isolation-module-wiring-diagram.jpg\" alt=\"sch\u00e9ma de c\u00e2blage du module d&#039;isolation d&#039;encodeur\" \/><\/div>\n\n<p><b>Comment aident-ils ?<\/b><\/p>\n<ul>\n<li>Isolation : en utilisant des optocoupleurs, ils suppriment tout chemin de masse direct, \u00e9liminant ainsi les boucles de masse potentielles.<\/li>\n<li>Sortie diff\u00e9rentielle : les normes RS422 et similaires transmettent les impulsions sur deux fils ; seule la diff\u00e9rence de tension importe, ce qui les rend tr\u00e8s immunis\u00e9s contre le bruit de mode commun et les interf\u00e9rences de c\u00e2ble.<\/li>\n<\/ul>\n\n<div class=\"aosi-wz-cpkp0724\">\n    <div class=\"aosi-wz-cpkp0724-left\">\n      <img decoding=\"async\" src=\"https:\/\/aositerminals.com\/wp-content\/uploads\/2025\/10\/Encoder-Pulse-Distribution-Module.png\" alt=\"Module de distribution d&#039;impulsions AOSI EJ-XABZ\">\n    <\/div>\n    <div class=\"aosi-wz-cpkp0724-right\">\n      <div>\n      <span id=\"elementor-toc__heading-anchor-1\" class=\"elementor-menu-anchor\"><\/span><h4>R\u00e9f\u00e9rence : Module de distribution d'impulsions AOSI EJ-XABZ<\/h4>\n      <ul style=\"list-style-type:none;padding-left:0px\">\n        <li>Le module de distribution d'impulsions d'encodeur diff\u00e9rentiel RS422 AOSI fournit plusieurs sorties isol\u00e9es pour une transmission de signal ABZ propre et stable. Il est con\u00e7u pour la r\u00e9troaction d'automate \u00e0 grande vitesse, la synchronisation de servomoteurs et les syst\u00e8mes d'automatisation n\u00e9cessitant une distribution de signal exempte de bruit.<\/li>\n      <\/ul>\n      <a class=\"aosi-wz-cpkp0724-right-btn\" href=\"https:\/\/aositerminals.com\/fr\/product-category\/encoder-pulse-distribution-modules\/\">Obtenir un devis maintenant<\/a>\n    <\/div>\n    <\/div>\n<\/div>\n\n<p>Ce module \u00e9limine les interf\u00e9rences de boucle de masse et permet \u00e0 un seul encodeur d'alimenter plusieurs automates ou variateurs de servo sans d\u00e9grader le signal.<\/p>\n\n<h2>Mise \u00e0 la terre et disposition des c\u00e2bles appropri\u00e9es<\/h2>\n<p>M\u00eame avec un mat\u00e9riel avanc\u00e9, une mauvaise mise \u00e0 la terre nuit \u00e0 la fiabilit\u00e9. Connectez toujours les blindages de c\u00e2ble \u00e0 <b>une seule extr\u00e9mit\u00e9<\/b> (c\u00f4t\u00e9 automate) pour \u00e9viter les boucles de masse.<\/p>\n<p><b>Conseils :<\/b><\/p>\n<ul>\n<li>Utilisez <b>c\u00e2bles \u00e0 paires torsad\u00e9es<\/b> pour les canaux A\/A\u2013, B\/B\u2013, Z\/Z\u2013.<\/li>\n<li>Maintenez les c\u00e2bles d'encodeur <b>\u00e0 10 cm<\/b> des lignes d'alimentation moteur.<\/li>\n<li>Utilisez des conduits m\u00e9talliques lors du cheminement des c\u00e2bles \u00e0 l'int\u00e9rieur des armoires.<\/li>\n<\/ul>\n\n<h2>Application r\u00e9elle \u2013 Correction de la d\u00e9rive de signal sur une ligne d'emballage<\/h2>\n<p>Une ligne d'emballage alimentaire signalait des sauts de position al\u00e9atoires. L'encodeur connect\u00e9 directement \u00e0 l'automate subissait de fortes interf\u00e9rences \u00e9lectromagn\u00e9tiques provenant des variateurs \u00e0 proximit\u00e9.<\/p>\n<p>Apr\u00e8s l'installation d'un <strong>module d'isolation d'impulsions ABZ AOSI<\/strong> et le remplacement du c\u00e2ble par des paires torsad\u00e9es blind\u00e9es, la d\u00e9rive a disparu.<\/p>\n<p>\ud83d\udcca <b>R\u00e9sultats apr\u00e8s correction<\/b><\/p>\n\n<div class=\"aosi-wz-table2\">\n<table class=\"aosi-wz-table1\">\n<tbody>\n<tr>\n<td>\n<b>Param\u00e8tres<\/b>\n<\/td>\n<td>\n<b>Avant<\/b>\n<\/td>\n<td>\n<b>Apr\u00e8s<\/b>\n<\/td>\n<\/tr>\n<tr>\n<td>Erreur de comptage<\/td>\n<td>\u00b18 impulsions<\/td>\n<td>0 impulsion<\/td>\n<\/tr>\n<tr>\n<td>Pr\u00e9cision de position<\/td>\n<td>\u00b12 mm<\/td>\n<td>\u00b10.3 mm<\/td>\n<\/tr>\n<tr>\n<td>Temps d'arr\u00eat\/semaine<\/td>\n<td>4 heures<\/td>\n<td>0 heure<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n\n<p>Apr\u00e8s l'installation du <strong>module d'isolation diff\u00e9rentielle RS422<\/strong>, la r\u00e9troaction de l'encodeur est devenue parfaitement stable \u2014 aucune perte d'impulsion m\u00eame \u00e0 vitesse moteur \u00e9lev\u00e9e.<\/p>\n<p>La pr\u00e9cision de position s'est am\u00e9lior\u00e9e de pr\u00e8s de <b>90%<\/b>, et le syst\u00e8me a fonctionn\u00e9 en continu sans arr\u00eats impr\u00e9vus.<\/p>\n<p>Cela d\u00e9montre comment un module de distribution d'impulsions d'encodeur \u00e0 isolation optique \u00e9limine non seulement le bruit \u00e9lectromagn\u00e9tique, mais am\u00e9liore \u00e9galement la fiabilit\u00e9 globale de la machine et l'efficacit\u00e9 de production.<\/p>\n\n<h2>Comment l'isolation am\u00e9liore la fiabilit\u00e9 \u00e0 long terme<\/h2>\n<p>Les modules d'isolation n'\u00e9liminent pas seulement les interf\u00e9rences, ils prolongent aussi la dur\u00e9e de vie du syst\u00e8me :<\/p>\n<ul>\n<li><b>Maintenance r\u00e9duite :<\/b> Une entr\u00e9e stable signifie aucun d\u00e9clenchement intempestif.<\/li>\n<li><b>Port\u00e9e \u00e9tendue :<\/b> Fiable jusqu'\u00e0 30 m\u00e8tres.<\/li>\n<li><b>Protection contre les surtensions :<\/b> La barri\u00e8re optique emp\u00eache tout dommage \u00e0 l'automate.<\/li>\n<li><b>\u00c9volutivit\u00e9 :<\/b> Connectez facilement plusieurs automates ou variateurs de servo.<\/li>\n<\/ul>\n<p>Ces modules sont d\u00e9sormais standard dans <b>l'automatisation d'usine, la robotique et les syst\u00e8mes de synchronisation de servomoteurs<\/b>, o\u00f9 chaque impulsion compte.<\/p>\n\n<h2>FAQ sur le signal d'encodeur instable dans les syst\u00e8mes d'automate<\/h2>\n<div class=\"aosi-wz-sfqall0723\">\n<button class=\"aosi-wz-sfq0723\">Q1 : Pourquoi mon signal d'encodeur fluctue-t-il dans un syst\u00e8me d'automate ?<\/button>\n<div class=\"aosi-wz-sfq0723-lb\">\n  <p>R1 : Les interf\u00e9rences, les boucles de masse et les longues distances de c\u00e2ble en sont les principales causes. Le c\u00e2blage diff\u00e9rentiel et les modules d'isolation r\u00e9solvent efficacement ces probl\u00e8mes.<\/p>\n<\/div>\n\n<button class=\"aosi-wz-sfq0723\">Q2 : Comment confirmer que le bruit est la cause des erreurs d'encodeur ?<\/button>\n<div class=\"aosi-wz-sfq0723-lb\">\n  <p>R2 : Utilisez un oscilloscope. Des fronts d'onde carr\u00e9e irr\u00e9guliers ou des sauts d'impulsion confirment l'interf\u00e9rence.<\/p>\n<\/div>\n\n<button class=\"aosi-wz-sfq0723\">Q3 : Les encodeurs RS422 sont-ils meilleurs que les types TTL ?<\/button>\n<div class=\"aosi-wz-sfq0723-lb\">\n  <p>R3 : Oui. Les signaux diff\u00e9rentiels RS422 annulent les interf\u00e9rences \u00e9lectromagn\u00e9tiques et prennent en charge des distances de c\u00e2ble plus longues avec une fiabilit\u00e9 accrue.<\/p>\n<\/div>\n\n<button class=\"aosi-wz-sfq0723\">Q4 : \u00c0 quoi sert un module de distribution d'impulsions d'encodeur ?<\/button>\n<div class=\"aosi-wz-sfq0723-lb\">\n  <p>R4 : Il isole et amplifie les signaux d'encodeur afin d'alimenter en toute s\u00e9curit\u00e9 plusieurs automates ou variateurs.<\/p>\n<\/div>\n\n<button class=\"aosi-wz-sfq0723\">Q5 : Comment les c\u00e2bles d'encodeur doivent-ils \u00eatre mis \u00e0 la terre ?<\/button>\n<div class=\"aosi-wz-sfq0723-lb\">\n  <p>R5 : Mettez le blindage \u00e0 la terre \u00e0 une seule extr\u00e9mit\u00e9 (c\u00f4t\u00e9 automate). \u00c9vitez la mise \u00e0 la terre aux deux extr\u00e9mit\u00e9s.<\/p>\n<\/div>\n\n<button class=\"aosi-wz-sfq0723\">Q6 : Un seul encodeur peut-il \u00eatre raccord\u00e9 directement \u00e0 deux automates ?<\/button>\n<div class=\"aosi-wz-sfq0723-lb\">\n  <p>R6 : Pas en toute s\u00e9curit\u00e9. Utilisez un module d'isolation ou de distribution pour \u00e9viter les r\u00e9flexions de signal et les incompatibilit\u00e9s de tension.<\/p>\n<\/div>\n<\/div>\n\n<h2>Conclusion<\/h2>\n<p><strong>Signaux d'encodeur instables<\/strong> peuvent compromettre la pr\u00e9cision de l'automatisation \u2014 mais avec une isolation et un c\u00e2blage appropri\u00e9s, la stabilit\u00e9 est facile \u00e0 obtenir.<br>L'ajout d'un module de distribution d'impulsions d'encodeur garantit un retour ABZ propre et exempt d'interf\u00e9rences, prot\u00e8ge les entr\u00e9es d'automate et am\u00e9liore la pr\u00e9cision de contr\u00f4le.<\/p>\n<p>Pour un retour de mouvement \u00e0 haute fiabilit\u00e9, d\u00e9couvrez la gamme compl\u00e8te de <a href=\"https:\/\/aositerminals.com\/fr\/product-category\/encoder-pulse-distribution-modules\/\">Modules de distribution d'impulsions d'encodeur AOSI<\/a> \u2014 con\u00e7us pour les applications d'automatisation, d'emballage et de robotique.<\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"Corrigez les signaux d'encodeur instables dans les PLC. D\u00e9couvrez les causes, les solutions de c\u00e2blage et comment les modules d'isolation AOSI \u00e9liminent les EMI pour garantir un retour d'impulsions pr\u00e9cis.","protected":false},"author":4,"featured_media":36890,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-36878","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v24.7 (Yoast SEO v24.7) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Why Encoder Signals Become Unstable in PLC Systems (and How to Fix It) - AOSI Terminal Blocks &amp; Module Manufacturer | Industrial Connectivity Solutions<\/title>\n<meta name=\"description\" content=\"Fix unstable encoder signals in PLCs. Learn causes, wiring solutions, and how AOSI isolation modules eliminate EMI to ensure accurate pulse feedback.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/aositerminals.com\/fr\/solutions\/unstable-encoder-signal-in-plc\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Why Encoder Signals Become Unstable in PLC Systems (and How to Fix It)\" \/>\n<meta property=\"og:description\" content=\"Fix unstable encoder signals in PLCs. Learn causes, wiring solutions, and how AOSI isolation modules eliminate EMI to ensure accurate pulse feedback.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/aositerminals.com\/fr\/solutions\/unstable-encoder-signal-in-plc\/\" \/>\n<meta property=\"og:site_name\" content=\"AOSI Terminal Blocks &amp; Module Manufacturer | Industrial Connectivity Solutions\" \/>\n<meta property=\"article:published_time\" content=\"2025-11-03T01:48:26+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-11-03T07:47:41+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/aositerminals.com\/wp-content\/uploads\/2025\/10\/Why-Encoder-Signals-Become-Unstable-in-PLC-Systems.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"800\" \/>\n\t<meta property=\"og:image:height\" content=\"600\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"liqi001\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u00c9crit par\" \/>\n\t<meta name=\"twitter:data1\" content=\"liqi001\" \/>\n\t<meta name=\"twitter:label2\" content=\"Dur\u00e9e de lecture estim\u00e9e\" \/>\n\t<meta name=\"twitter:data2\" content=\"6 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/aositerminals.com\/de\/solutions\/unstable-encoder-signal-in-plc\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/aositerminals.com\/de\/solutions\/unstable-encoder-signal-in-plc\/\"},\"author\":{\"name\":\"liqi001\",\"@id\":\"https:\/\/aositerminals.com\/ru\/#\/schema\/person\/ea80420f2fbb21490fba5efdc31bc514\"},\"headline\":\"Why Encoder Signals Become Unstable in PLC Systems (and How to Fix It)\",\"datePublished\":\"2025-11-03T01:48:26+00:00\",\"dateModified\":\"2025-11-03T07:47:41+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/aositerminals.com\/de\/solutions\/unstable-encoder-signal-in-plc\/\"},\"wordCount\":1065,\"publisher\":{\"@id\":\"https:\/\/aositerminals.com\/ru\/#organization\"},\"image\":{\"@id\":\"https:\/\/aositerminals.com\/de\/solutions\/unstable-encoder-signal-in-plc\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/aositerminals.com\/wp-content\/uploads\/2025\/10\/Why-Encoder-Signals-Become-Unstable-in-PLC-Systems.jpg\",\"articleSection\":[\"\u672a\u5206\u7c7b\"],\"inLanguage\":\"fr-FR\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/aositerminals.com\/de\/solutions\/unstable-encoder-signal-in-plc\/\",\"url\":\"https:\/\/aositerminals.com\/de\/solutions\/unstable-encoder-signal-in-plc\/\",\"name\":\"Why Encoder Signals Become Unstable in PLC Systems (and How to Fix It) - AOSI Terminal Blocks &amp; Module Manufacturer | Industrial Connectivity Solutions\",\"isPartOf\":{\"@id\":\"https:\/\/aositerminals.com\/ru\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/aositerminals.com\/de\/solutions\/unstable-encoder-signal-in-plc\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/aositerminals.com\/de\/solutions\/unstable-encoder-signal-in-plc\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/aositerminals.com\/wp-content\/uploads\/2025\/10\/Why-Encoder-Signals-Become-Unstable-in-PLC-Systems.jpg\",\"datePublished\":\"2025-11-03T01:48:26+00:00\",\"dateModified\":\"2025-11-03T07:47:41+00:00\",\"description\":\"Fix unstable encoder signals in PLCs. Learn causes, wiring solutions, and how AOSI isolation modules eliminate EMI to ensure accurate pulse feedback.\",\"breadcrumb\":{\"@id\":\"https:\/\/aositerminals.com\/de\/solutions\/unstable-encoder-signal-in-plc\/#breadcrumb\"},\"inLanguage\":\"fr-FR\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/aositerminals.com\/de\/solutions\/unstable-encoder-signal-in-plc\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"fr-FR\",\"@id\":\"https:\/\/aositerminals.com\/de\/solutions\/unstable-encoder-signal-in-plc\/#primaryimage\",\"url\":\"https:\/\/aositerminals.com\/wp-content\/uploads\/2025\/10\/Why-Encoder-Signals-Become-Unstable-in-PLC-Systems.jpg\",\"contentUrl\":\"https:\/\/aositerminals.com\/wp-content\/uploads\/2025\/10\/Why-Encoder-Signals-Become-Unstable-in-PLC-Systems.jpg\",\"width\":800,\"height\":600,\"caption\":\"unstable encoder signal\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/aositerminals.com\/de\/solutions\/unstable-encoder-signal-in-plc\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"\u9996\u9875\",\"item\":\"https:\/\/aositerminals.com\/en\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Why Encoder Signals Become Unstable in PLC Systems (and How to Fix It)\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/aositerminals.com\/ru\/#website\",\"url\":\"https:\/\/aositerminals.com\/ru\/\",\"name\":\"Industrial Automation Terminal Blocks\",\"description\":\"Factory-direct pluggable, spring &amp; screw terminal blocks and I\/O \/ relay modules. Fast OEM \/ ODM, global shipping.\",\"publisher\":{\"@id\":\"https:\/\/aositerminals.com\/ru\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/aositerminals.com\/ru\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"fr-FR\"},{\"@type\":\"Organization\",\"@id\":\"https:\/\/aositerminals.com\/ru\/#organization\",\"name\":\"Industrial Automation Terminal Blocks\",\"url\":\"https:\/\/aositerminals.com\/ru\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"fr-FR\",\"@id\":\"https:\/\/aositerminals.com\/ru\/#\/schema\/logo\/image\/\",\"url\":\"https:\/\/aositerminals.com\/wp-content\/uploads\/2025\/03\/aff0c45cf8d34c8eee2824ecf650eb5.webp\",\"contentUrl\":\"https:\/\/aositerminals.com\/wp-content\/uploads\/2025\/03\/aff0c45cf8d34c8eee2824ecf650eb5.webp\",\"width\":215,\"height\":97,\"caption\":\"Industrial Automation Terminal Blocks\"},\"image\":{\"@id\":\"https:\/\/aositerminals.com\/ru\/#\/schema\/logo\/image\/\"}},{\"@type\":\"Person\",\"@id\":\"https:\/\/aositerminals.com\/ru\/#\/schema\/person\/ea80420f2fbb21490fba5efdc31bc514\",\"name\":\"liqi001\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"fr-FR\",\"@id\":\"https:\/\/aositerminals.com\/ru\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/secure.gravatar.com\/avatar\/c3bff73b203e4695c70f815f58d8fc65bdd703d79bdd517e01042fd8bee47f1e?s=96&d=mm&r=g\",\"contentUrl\":\"https:\/\/secure.gravatar.com\/avatar\/c3bff73b203e4695c70f815f58d8fc65bdd703d79bdd517e01042fd8bee47f1e?s=96&d=mm&r=g\",\"caption\":\"liqi001\"},\"url\":\"https:\/\/aositerminals.com\/fr\/solutions\/author\/liqi001\/\"}]}<\/script>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"Pourquoi les signaux d'encodeur deviennent instables dans les syst\u00e8mes PLC (et comment y rem\u00e9dier) - Fabricant de blocs terminaux et modules AOSI | Solutions de connectivit\u00e9 industrielle","description":"Corrigez les signaux d'encodeur instables dans les PLC. D\u00e9couvrez les causes, les solutions de c\u00e2blage et comment les modules d'isolation AOSI \u00e9liminent les EMI pour garantir un retour d'impulsions pr\u00e9cis.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/aositerminals.com\/fr\/solutions\/unstable-encoder-signal-in-plc\/","og_locale":"fr_FR","og_type":"article","og_title":"Why Encoder Signals Become Unstable in PLC Systems (and How to Fix It)","og_description":"Fix unstable encoder signals in PLCs. Learn causes, wiring solutions, and how AOSI isolation modules eliminate EMI to ensure accurate pulse feedback.","og_url":"https:\/\/aositerminals.com\/fr\/solutions\/unstable-encoder-signal-in-plc\/","og_site_name":"AOSI Terminal Blocks &amp; Module Manufacturer | Industrial Connectivity Solutions","article_published_time":"2025-11-03T01:48:26+00:00","article_modified_time":"2025-11-03T07:47:41+00:00","og_image":[{"width":800,"height":600,"url":"https:\/\/aositerminals.com\/wp-content\/uploads\/2025\/10\/Why-Encoder-Signals-Become-Unstable-in-PLC-Systems.jpg","type":"image\/jpeg"}],"author":"liqi001","twitter_card":"summary_large_image","twitter_misc":{"\u00c9crit par":"liqi001","Dur\u00e9e de lecture estim\u00e9e":"6 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/aositerminals.com\/de\/solutions\/unstable-encoder-signal-in-plc\/#article","isPartOf":{"@id":"https:\/\/aositerminals.com\/de\/solutions\/unstable-encoder-signal-in-plc\/"},"author":{"name":"liqi001","@id":"https:\/\/aositerminals.com\/ru\/#\/schema\/person\/ea80420f2fbb21490fba5efdc31bc514"},"headline":"Why Encoder Signals Become Unstable in PLC Systems (and How to Fix It)","datePublished":"2025-11-03T01:48:26+00:00","dateModified":"2025-11-03T07:47:41+00:00","mainEntityOfPage":{"@id":"https:\/\/aositerminals.com\/de\/solutions\/unstable-encoder-signal-in-plc\/"},"wordCount":1065,"publisher":{"@id":"https:\/\/aositerminals.com\/ru\/#organization"},"image":{"@id":"https:\/\/aositerminals.com\/de\/solutions\/unstable-encoder-signal-in-plc\/#primaryimage"},"thumbnailUrl":"https:\/\/aositerminals.com\/wp-content\/uploads\/2025\/10\/Why-Encoder-Signals-Become-Unstable-in-PLC-Systems.jpg","articleSection":["\u672a\u5206\u7c7b"],"inLanguage":"fr-FR"},{"@type":"WebPage","@id":"https:\/\/aositerminals.com\/de\/solutions\/unstable-encoder-signal-in-plc\/","url":"https:\/\/aositerminals.com\/de\/solutions\/unstable-encoder-signal-in-plc\/","name":"Pourquoi les signaux d'encodeur deviennent instables dans les syst\u00e8mes PLC (et comment y rem\u00e9dier) - Fabricant de blocs terminaux et modules AOSI | Solutions de connectivit\u00e9 industrielle","isPartOf":{"@id":"https:\/\/aositerminals.com\/ru\/#website"},"primaryImageOfPage":{"@id":"https:\/\/aositerminals.com\/de\/solutions\/unstable-encoder-signal-in-plc\/#primaryimage"},"image":{"@id":"https:\/\/aositerminals.com\/de\/solutions\/unstable-encoder-signal-in-plc\/#primaryimage"},"thumbnailUrl":"https:\/\/aositerminals.com\/wp-content\/uploads\/2025\/10\/Why-Encoder-Signals-Become-Unstable-in-PLC-Systems.jpg","datePublished":"2025-11-03T01:48:26+00:00","dateModified":"2025-11-03T07:47:41+00:00","description":"Corrigez les signaux d'encodeur instables dans les PLC. D\u00e9couvrez les causes, les solutions de c\u00e2blage et comment les modules d'isolation AOSI \u00e9liminent les EMI pour garantir un retour d'impulsions pr\u00e9cis.","breadcrumb":{"@id":"https:\/\/aositerminals.com\/de\/solutions\/unstable-encoder-signal-in-plc\/#breadcrumb"},"inLanguage":"fr-FR","potentialAction":[{"@type":"ReadAction","target":["https:\/\/aositerminals.com\/de\/solutions\/unstable-encoder-signal-in-plc\/"]}]},{"@type":"ImageObject","inLanguage":"fr-FR","@id":"https:\/\/aositerminals.com\/de\/solutions\/unstable-encoder-signal-in-plc\/#primaryimage","url":"https:\/\/aositerminals.com\/wp-content\/uploads\/2025\/10\/Why-Encoder-Signals-Become-Unstable-in-PLC-Systems.jpg","contentUrl":"https:\/\/aositerminals.com\/wp-content\/uploads\/2025\/10\/Why-Encoder-Signals-Become-Unstable-in-PLC-Systems.jpg","width":800,"height":600,"caption":"unstable encoder signal"},{"@type":"BreadcrumbList","@id":"https:\/\/aositerminals.com\/de\/solutions\/unstable-encoder-signal-in-plc\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"\u9996\u9875","item":"https:\/\/aositerminals.com\/en\/"},{"@type":"ListItem","position":2,"name":"Why Encoder Signals Become Unstable in PLC Systems (and How to Fix It)"}]},{"@type":"WebSite","@id":"https:\/\/aositerminals.com\/ru\/#website","url":"https:\/\/aositerminals.com\/ru\/","name":"Bornes d'automatisation industrielle","description":"Blocs de bornes enfichables, \u00e0 ressort et \u00e0 vis et modules d'E\/S\/de relais. OEM \/ ODM rapide, exp\u00e9dition mondiale.","publisher":{"@id":"https:\/\/aositerminals.com\/ru\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/aositerminals.com\/ru\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"fr-FR"},{"@type":"Organization","@id":"https:\/\/aositerminals.com\/ru\/#organization","name":"Bornes d'automatisation industrielle","url":"https:\/\/aositerminals.com\/ru\/","logo":{"@type":"ImageObject","inLanguage":"fr-FR","@id":"https:\/\/aositerminals.com\/ru\/#\/schema\/logo\/image\/","url":"https:\/\/aositerminals.com\/wp-content\/uploads\/2025\/03\/aff0c45cf8d34c8eee2824ecf650eb5.webp","contentUrl":"https:\/\/aositerminals.com\/wp-content\/uploads\/2025\/03\/aff0c45cf8d34c8eee2824ecf650eb5.webp","width":215,"height":97,"caption":"Industrial Automation Terminal Blocks"},"image":{"@id":"https:\/\/aositerminals.com\/ru\/#\/schema\/logo\/image\/"}},{"@type":"Person","@id":"https:\/\/aositerminals.com\/ru\/#\/schema\/person\/ea80420f2fbb21490fba5efdc31bc514","name":"liqi001","image":{"@type":"ImageObject","inLanguage":"fr-FR","@id":"https:\/\/aositerminals.com\/ru\/#\/schema\/person\/image\/","url":"https:\/\/secure.gravatar.com\/avatar\/c3bff73b203e4695c70f815f58d8fc65bdd703d79bdd517e01042fd8bee47f1e?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/c3bff73b203e4695c70f815f58d8fc65bdd703d79bdd517e01042fd8bee47f1e?s=96&d=mm&r=g","caption":"liqi001"},"url":"https:\/\/aositerminals.com\/fr\/solutions\/author\/liqi001\/"}]}},"_links":{"self":[{"href":"https:\/\/aositerminals.com\/fr\/wp-json\/wp\/v2\/posts\/36878","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/aositerminals.com\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/aositerminals.com\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/aositerminals.com\/fr\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/aositerminals.com\/fr\/wp-json\/wp\/v2\/comments?post=36878"}],"version-history":[{"count":9,"href":"https:\/\/aositerminals.com\/fr\/wp-json\/wp\/v2\/posts\/36878\/revisions"}],"predecessor-version":[{"id":36954,"href":"https:\/\/aositerminals.com\/fr\/wp-json\/wp\/v2\/posts\/36878\/revisions\/36954"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/aositerminals.com\/fr\/wp-json\/wp\/v2\/media\/36890"}],"wp:attachment":[{"href":"https:\/\/aositerminals.com\/fr\/wp-json\/wp\/v2\/media?parent=36878"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/aositerminals.com\/fr\/wp-json\/wp\/v2\/categories?post=36878"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/aositerminals.com\/fr\/wp-json\/wp\/v2\/tags?post=36878"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}