{"id":19793,"date":"2026-01-17T12:57:47","date_gmt":"2026-01-17T04:57:47","guid":{"rendered":"https:\/\/lorentzzi.com\/?p=19793"},"modified":"2026-03-17T18:03:01","modified_gmt":"2026-03-17T10:03:01","slug":"3-methods-for-counting-using-safety-light-curtains-and-counters","status":"publish","type":"post","link":"https:\/\/lorentzzi.com\/pt\/3-methods-for-counting-using-safety-light-curtains-and-counters\/","title":{"rendered":"3 m\u00e9todos de contagem usando cortinas de luz de seguran\u00e7a e contadores"},"content":{"rendered":"<div data-elementor-type=\"wp-post\" data-elementor-id=\"19793\" class=\"elementor elementor-19793\" data-elementor-post-type=\"post\">\n\t\t\t\t<div class=\"elementor-element elementor-element-d78a698 e-flex e-con-boxed e-con e-parent\" data-id=\"d78a698\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-eaf7bde elementor-widget elementor-widget-text-editor\" data-id=\"eaf7bde\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">Voc\u00ea precisa contar os ve\u00edculos que entram e saem de um estacionamento ou contar as mercadorias que passam pelas esteiras transportadoras em alturas variadas em uma \u00e1rea designada?<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-305af97 elementor-widget elementor-widget-image\" data-id=\"305af97\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"1024\" height=\"512\" src=\"https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/01\/Safety-light-curtains-are-used-to-count-the-number-of-trays-on-the-conveyor-belt.jpg\" class=\"attachment-large size-large wp-image-19789\" alt=\"As cortinas de luz de seguran\u00e7a s\u00e3o usadas para contar o n\u00famero de bandejas na esteira transportadora\" srcset=\"https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/01\/Safety-light-curtains-are-used-to-count-the-number-of-trays-on-the-conveyor-belt.jpg 1024w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/01\/Safety-light-curtains-are-used-to-count-the-number-of-trays-on-the-conveyor-belt-300x150.jpg 300w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/01\/Safety-light-curtains-are-used-to-count-the-number-of-trays-on-the-conveyor-belt-768x384.jpg 768w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/01\/Safety-light-curtains-are-used-to-count-the-number-of-trays-on-the-conveyor-belt-18x9.jpg 18w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/01\/Safety-light-curtains-are-used-to-count-the-number-of-trays-on-the-conveyor-belt-600x300.jpg 600w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/01\/Safety-light-curtains-are-used-to-count-the-number-of-trays-on-the-conveyor-belt-64x32.jpg 64w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3b5b736 elementor-widget elementor-widget-text-editor\" data-id=\"3b5b736\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><a href=\"https:\/\/lorentzzi.com\/pt\/products\/proximity-sensor\/sensor-fotoeletrico-2\/through-beam-photoelectric-sensor-m12-thread\/\"><span style=\"font-weight: 400;\"><span style=\"color: #ff0000;\">Sensores fotoel\u00e9tricos de feixe passante ponto a ponto<\/span><\/span><\/a><span style=\"font-weight: 400;\"> s\u00e3o uma op\u00e7\u00e3o comum, mas apresentam limita\u00e7\u00f5es not\u00e1veis em aplica\u00e7\u00f5es pr\u00e1ticas.\u00a0<\/span><\/p><p><span style=\"font-weight: 400;\">No entanto, os modelos de ve\u00edculos e as mercadorias de contagem t\u00eam alturas diferentes, e a montagem inadequada do sensor - muito baixa ou muito alta - causar\u00e1 facilmente imprecis\u00f5es na contagem.<\/span><\/p><p><span style=\"color: #ff0000;\"><a style=\"color: #ff0000;\" href=\"https:\/\/lorentzzi.com\/pt\/safety-light-curtain-sensor\/\"><span style=\"font-weight: 400;\">Cortinas de luz de seguran\u00e7a<\/span><\/a><\/span><span style=\"font-weight: 400;\"> s\u00e3o, portanto, uma alternativa muito melhor. Eles permitem a detec\u00e7\u00e3o de objetos em uma faixa de altura fixa (por exemplo, de uma altura de montagem de 0,5 metro at\u00e9 a dist\u00e2ncia m\u00e1xima de detec\u00e7\u00e3o). Essa cobertura de altura aumenta drasticamente a precis\u00e3o da detec\u00e7\u00e3o, garantindo a identifica\u00e7\u00e3o confi\u00e1vel de ve\u00edculos de todos os tamanhos.<\/span><\/p><p><span style=\"font-weight: 400;\">Agora que voc\u00ea sabe que as cortinas de luz de seguran\u00e7a s\u00e3o a melhor op\u00e7\u00e3o, como us\u00e1-las para contar o total de objetos com precis\u00e3o?<\/span><\/p><p><span style=\"font-weight: 400;\">A seguir, apresentamos tr\u00eas solu\u00e7\u00f5es econ\u00f4micas e prontas para uso para essa aplica\u00e7\u00e3o.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4d2bad3 elementor-widget elementor-widget-heading\" data-id=\"4d2bad3\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">M\u00e9todo 1: Usar uma cortina de luz de seguran\u00e7a e um contador cumulativo eletromagn\u00e9tico<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-99b6223 elementor-widget elementor-widget-text-editor\" data-id=\"99b6223\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">Ao usar uma cortina de luz de seguran\u00e7a para contar objetos, a primeira solu\u00e7\u00e3o que vem \u00e0 mente \u00e9 us\u00e1-la com um <\/span><span style=\"color: #ff0000;\"><a style=\"color: #ff0000;\" href=\"https:\/\/lorentzzi.com\/pt\/categoria-do-produto\/timer-switch-and-counter\/pulse-counter\/\"><span style=\"font-weight: 400;\">contador de acumulador eletromec\u00e2nico<\/span><\/a><\/span><span style=\"font-weight: 400;\">, que \u00e9 o mais f\u00e1cil de implementar.<\/span><\/p><p><span style=\"font-weight: 400;\">Quando um objeto passa pela barreira que consiste em um transmissor e um receptor de cortina de luz de seguran\u00e7a, ele gera uma sa\u00edda de tens\u00e3o, que aciona o contador do acumulador para contar uma vez.<\/span><\/p><p><span style=\"font-weight: 400;\">Como a sa\u00edda de uma cortina de luz de seguran\u00e7a pode ser um transistor PNP, NPN ou uma sa\u00edda de rel\u00e9, o diagrama de fia\u00e7\u00e3o ser\u00e1 diferente dependendo da sa\u00edda.<\/span><\/p><p><span style=\"font-weight: 400;\">Na pr\u00f3xima se\u00e7\u00e3o, mostrarei como conect\u00e1-lo corretamente.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-20c78c3 elementor-widget elementor-widget-heading\" data-id=\"20c78c3\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Como fazer a conex\u00e3o?<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1a89cef elementor-widget elementor-widget-text-editor\" data-id=\"1a89cef\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">Para cortinas de luz de seguran\u00e7a usando <\/span><span style=\"color: #ff0000;\"><a style=\"color: #ff0000;\" href=\"https:\/\/lorentzzi.com\/pt\/pnp-vs-npn-proximity-sensors-key-differences-wiring-diagram-and-how-to-choose\/\"><span style=\"font-weight: 400;\">NPN ou PNP<\/span><\/a><\/span><span style=\"font-weight: 400;\"> sa\u00eddas de transistor, voc\u00ea pode conect\u00e1-los conforme mostrado no diagrama abaixo:<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-8d5b8d0 elementor-widget elementor-widget-image\" data-id=\"8d5b8d0\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"1024\" height=\"512\" src=\"https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/01\/Lorentzzi-safety-light-curtain-and-electromagnetic-accumulator-wiring-diagram.jpg\" class=\"attachment-large size-large wp-image-19786\" alt=\"Diagrama de fia\u00e7\u00e3o da cortina de luz de seguran\u00e7a e do acumulador eletromagn\u00e9tico Lorentzzi\" srcset=\"https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/01\/Lorentzzi-safety-light-curtain-and-electromagnetic-accumulator-wiring-diagram.jpg 1024w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/01\/Lorentzzi-safety-light-curtain-and-electromagnetic-accumulator-wiring-diagram-300x150.jpg 300w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/01\/Lorentzzi-safety-light-curtain-and-electromagnetic-accumulator-wiring-diagram-768x384.jpg 768w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/01\/Lorentzzi-safety-light-curtain-and-electromagnetic-accumulator-wiring-diagram-18x9.jpg 18w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/01\/Lorentzzi-safety-light-curtain-and-electromagnetic-accumulator-wiring-diagram-600x300.jpg 600w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/01\/Lorentzzi-safety-light-curtain-and-electromagnetic-accumulator-wiring-diagram-64x32.jpg 64w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-867a89a elementor-widget elementor-widget-text-editor\" data-id=\"867a89a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">Como nossos contadores de acumuladores eletromec\u00e2nicos n\u00e3o t\u00eam terminais positivos e negativos, voc\u00ea pode conect\u00e1-los facilmente sem se preocupar com a invers\u00e3o da conex\u00e3o.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-cc4e9b1 elementor-widget elementor-widget-heading\" data-id=\"cc4e9b1\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Vantagens<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7c4dcea elementor-widget elementor-widget-text-editor\" data-id=\"7c4dcea\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<ul><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">A fia\u00e7\u00e3o \u00e9 simples e adequada para iniciantes.<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">N\u00e3o \u00e9 necess\u00e1rio nenhum conhecimento de programa\u00e7\u00e3o; o problema de contagem pode ser resolvido apenas com hardware.<\/span><\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-e037bc7 elementor-widget elementor-widget-heading\" data-id=\"e037bc7\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Desvantagens<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-8848f29 elementor-widget elementor-widget-text-editor\" data-id=\"8848f29\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<ul><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Ele s\u00f3 pode ser usado para contar o n\u00famero total. Se voc\u00ea quiser emitir um alarme quando um n\u00famero predefinido for atingido, haver\u00e1 um problema.<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Se voc\u00ea quiser parar a m\u00e1quina depois de atingir um valor predefinido, precisar\u00e1 de uma pessoa dedicada para obter os resultados da contagem, o que pode desperdi\u00e7ar recursos humanos.<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Ao contar pessoas em estacionamentos ou portas autom\u00e1ticas, a\u00e7\u00f5es como um carro dando marcha \u00e0 r\u00e9 ao entrar ou uma pessoa passando pela porta e depois retornando podem ser contadas, o que pode levar a erros na contagem total.<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Como poucos contadores cumulativos t\u00eam recursos de comunica\u00e7\u00e3o, o monitoramento remoto pode ser dif\u00edcil; por exemplo, \u00e9<\/span><\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-b3be75d elementor-widget elementor-widget-heading\" data-id=\"b3be75d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">M\u00e9todo 2: Usar uma cortina de luz de seguran\u00e7a e um contador predefinido\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2b51524 elementor-widget elementor-widget-text-editor\" data-id=\"2b51524\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">Esse m\u00e9todo utiliza uma cortina de luz de seguran\u00e7a em conjunto com um rel\u00e9 de contagem predefinido (como o nosso <\/span><span style=\"color: #ff0000;\"><a style=\"color: #ff0000;\" href=\"https:\/\/lorentzzi.com\/pt\/products\/timer-switch-and-counter\/pulse-counter\/dh48j-110vac-220vac-preset-digital-counter-relay\/\"><span style=\"font-weight: 400;\">Rel\u00e9 contador predefinido DH48J<\/span><\/a><\/span><span style=\"font-weight: 400;\">). Sua principal vantagem \u00e9 permitir a contagem de lotes e fornecer um alarme ap\u00f3s a conclus\u00e3o.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6ef4294 elementor-widget elementor-widget-heading\" data-id=\"6ef4294\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Como funciona:<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-d153fda elementor-widget elementor-widget-text-editor\" data-id=\"d153fda\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">Quando um objeto interrompe o feixe de luz entre o transmissor e o receptor da cortina de luz de seguran\u00e7a, um sinal de contagem \u00e9 acionado. O rel\u00e9 de contagem aumenta at\u00e9 que o valor predefinido seja atingido, momento em que ele emite um sinal de controle (por exemplo, para ativar um alarme). Em seguida, esse ciclo \u00e9 reiniciado, permitindo a contagem eficiente e repetida de lotes.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-fdab3f5 elementor-widget elementor-widget-heading\" data-id=\"fdab3f5\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Considera\u00e7\u00f5es sobre a fia\u00e7\u00e3o:<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-36ac774 elementor-widget elementor-widget-text-editor\" data-id=\"36ac774\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">Nossos rel\u00e9s de contagem suportam v\u00e1rios tipos de entrada (PNP, NPN ou rel\u00e9). \u00c9 fundamental garantir a compatibilidade entre o circuito de entrada do rel\u00e9 de contagem e o tipo de sinal de sa\u00edda da cortina de luz de seguran\u00e7a antes da conex\u00e3o. Consulte o diagrama de fia\u00e7\u00e3o a seguir:<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-eb32ba9 elementor-widget elementor-widget-image\" data-id=\"eb32ba9\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"1024\" height=\"512\" src=\"https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/01\/Lorentzzi-safety-light-curtain-and-preset-counter-wiring-diagram.jpg\" class=\"attachment-large size-large wp-image-19787\" alt=\"Diagrama de fia\u00e7\u00e3o da cortina de luz de seguran\u00e7a Lorentzzi e do contador predefinido\" srcset=\"https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/01\/Lorentzzi-safety-light-curtain-and-preset-counter-wiring-diagram.jpg 1024w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/01\/Lorentzzi-safety-light-curtain-and-preset-counter-wiring-diagram-300x150.jpg 300w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/01\/Lorentzzi-safety-light-curtain-and-preset-counter-wiring-diagram-768x384.jpg 768w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/01\/Lorentzzi-safety-light-curtain-and-preset-counter-wiring-diagram-18x9.jpg 18w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/01\/Lorentzzi-safety-light-curtain-and-preset-counter-wiring-diagram-600x300.jpg 600w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/01\/Lorentzzi-safety-light-curtain-and-preset-counter-wiring-diagram-64x32.jpg 64w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-5769d92 elementor-widget elementor-widget-heading\" data-id=\"5769d92\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Vantagens:<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-74b212f elementor-widget elementor-widget-text-editor\" data-id=\"74b212f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<ul><li style=\"font-weight: 400;\" aria-level=\"1\"><b>Contagem de lotes<\/b><span style=\"font-weight: 400;\">: Ideal para processos em lote. O rel\u00e9 de contagem pode ser usado de forma independente ou com contadores adicionais para essa finalidade.<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><b>Sa\u00edda de alarme<\/b><span style=\"font-weight: 400;\">: Ao atingir a contagem definida, a sa\u00edda do rel\u00e9 pode acionar diretamente um alarme ou indicador, fornecendo um status de conclus\u00e3o claro.<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><b style=\"font-style: inherit;\">Integra\u00e7\u00e3o de controle<\/b><span style=\"font-weight: 400;\">: O sinal de sa\u00edda pode ser usado para controlar outros dispositivos (por exemplo, parar um motor), facilitando as sequ\u00eancias de controle automatizadas.<\/span><\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-221049a elementor-widget elementor-widget-heading\" data-id=\"221049a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Desvantagens:<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2a795f2 elementor-widget elementor-widget-text-editor\" data-id=\"2a795f2\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<ul><li style=\"font-weight: 400;\" aria-level=\"1\"><b>Suscet\u00edvel a contagens duplicadas<\/b><span style=\"font-weight: 400;\">: Se o mesmo objeto entrar e sair repetidamente da zona de detec\u00e7\u00e3o, ele ser\u00e1 contado v\u00e1rias vezes.<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><b>Flexibilidade limitada<\/b><span style=\"font-weight: 400;\">: O sistema n\u00e3o \u00e9 program\u00e1vel, o que restringe sua capacidade de executar l\u00f3gica complexa e condicional.<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><b style=\"font-style: inherit;\">Falta de conectividade<\/b><span style=\"font-weight: 400;\">: Sem recursos de comunica\u00e7\u00e3o (por exemplo, porta RS485), o monitoramento remoto e a integra\u00e7\u00e3o de dados n\u00e3o s\u00e3o poss\u00edveis.<\/span><\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6291e5a elementor-widget elementor-widget-heading\" data-id=\"6291e5a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">M\u00e9todo 3: Usando uma cortina de luz de seguran\u00e7a, PLC e HMI<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-5354369 elementor-widget elementor-widget-text-editor\" data-id=\"5354369\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">A conex\u00e3o de uma cortina de luz de seguran\u00e7a a um PLC n\u00e3o \u00e9 apenas a melhor solu\u00e7\u00e3o para a contagem de objetos, mas tamb\u00e9m pode lidar com tarefas mais complexas.<\/span><\/p><p><span style=\"font-weight: 400;\">Ao combinar esses dois produtos e programar o PLC de acordo, podemos evitar os erros de contagem que ocorrem nos m\u00e9todos um e dois.<\/span><\/p><p><span style=\"font-weight: 400;\">Agora vamos dar uma olhada mais de perto em seu princ\u00edpio de funcionamento, m\u00e9todos de fia\u00e7\u00e3o e vantagens e desvantagens.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-66e5a0f elementor-widget elementor-widget-heading\" data-id=\"66e5a0f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Como funciona<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-439e740 elementor-widget elementor-widget-text-editor\" data-id=\"439e740\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">Nesse m\u00e9todo de contagem, quando um objeto bloqueia o feixe de luz da cortina de luz de seguran\u00e7a, a cortina de luz envia um sinal de pulso de 24 VCC ou 12 VCC para um ponto de entrada designado no PLC.<\/span><\/p><p><span style=\"font-weight: 400;\">O programa de controle PLC escrito pelo usu\u00e1rio verifica continuamente esse sinal de entrada.<\/span><\/p><p><span style=\"font-weight: 400;\">Sempre que um sinal v\u00e1lido \u00e9 detectado, o registro do contador aumenta e o resultado da contagem \u00e9 exibido na interface homem-m\u00e1quina (HMI) via Ethernet.<\/span><\/p><p><span style=\"font-weight: 400;\">Al\u00e9m disso, \u00e9 poss\u00edvel implementar uma l\u00f3gica mais avan\u00e7ada, como acionar um alarme para tocar uma campainha.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-25dbfe1 elementor-widget elementor-widget-heading\" data-id=\"25dbfe1\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Como conectar os dois produtos?<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3101d14 elementor-widget elementor-widget-text-editor\" data-id=\"3101d14\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">O diagrama de fia\u00e7\u00e3o abaixo mostrar\u00e1 como conectar diferentes sa\u00eddas de cortinas de luz de seguran\u00e7a a um PLC Siemens S7-200 SMART.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-946a056 elementor-widget elementor-widget-image\" data-id=\"946a056\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"512\" src=\"https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/01\/Lorentzzi-safety-light-curtain-siemense-PLC-and-HMI-wiring-diagram.jpg\" class=\"attachment-large size-large wp-image-19788\" alt=\"Cortina de luz de seguran\u00e7a Lorentzzi, PLC Siemense e diagrama de fia\u00e7\u00e3o HMI\" srcset=\"https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/01\/Lorentzzi-safety-light-curtain-siemense-PLC-and-HMI-wiring-diagram.jpg 1024w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/01\/Lorentzzi-safety-light-curtain-siemense-PLC-and-HMI-wiring-diagram-300x150.jpg 300w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/01\/Lorentzzi-safety-light-curtain-siemense-PLC-and-HMI-wiring-diagram-768x384.jpg 768w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/01\/Lorentzzi-safety-light-curtain-siemense-PLC-and-HMI-wiring-diagram-18x9.jpg 18w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/01\/Lorentzzi-safety-light-curtain-siemense-PLC-and-HMI-wiring-diagram-600x300.jpg 600w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/01\/Lorentzzi-safety-light-curtain-siemense-PLC-and-HMI-wiring-diagram-64x32.jpg 64w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-a7645fe elementor-widget elementor-widget-heading\" data-id=\"a7645fe\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Vantagens<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6b4d645 elementor-widget elementor-widget-text-editor\" data-id=\"6b4d645\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<ul><li><b>Alta flexibilidade e intelig\u00eancia<\/b><span style=\"font-weight: 400;\">: A natureza program\u00e1vel dos PLCs permite que eles implementem uma l\u00f3gica de contagem complexa e se integrem perfeitamente a outros processos, como classifica\u00e7\u00e3o, embalagem ou registro de dados.<\/span><\/li><li aria-level=\"1\"><b>Anti-contagem dupla<\/b><span style=\"font-weight: 400;\">: Com o uso de um sensor fotoel\u00e9trico adicional, podemos obter uma contagem antidupla. Por exemplo, no exemplo mostrado abaixo, se a sequ\u00eancia do sinal de sa\u00edda do objeto detectado for 1-&gt;2-&gt;3, ele ser\u00e1 contado apenas uma vez; se a sequ\u00eancia for diferente, o PLC n\u00e3o contar\u00e1.<\/span><\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-5540c4c elementor-widget elementor-widget-image\" data-id=\"5540c4c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"512\" src=\"https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/01\/The-tray-passes-through-the-safety-light-curtain-on-the-conveyor-belt.jpg\" class=\"attachment-large size-large wp-image-19810\" alt=\"A bandeja passa pela cortina de luz de seguran\u00e7a na esteira transportadora\" srcset=\"https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/01\/The-tray-passes-through-the-safety-light-curtain-on-the-conveyor-belt.jpg 1024w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/01\/The-tray-passes-through-the-safety-light-curtain-on-the-conveyor-belt-300x150.jpg 300w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/01\/The-tray-passes-through-the-safety-light-curtain-on-the-conveyor-belt-768x384.jpg 768w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/01\/The-tray-passes-through-the-safety-light-curtain-on-the-conveyor-belt-18x9.jpg 18w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/01\/The-tray-passes-through-the-safety-light-curtain-on-the-conveyor-belt-600x300.jpg 600w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/01\/The-tray-passes-through-the-safety-light-curtain-on-the-conveyor-belt-64x32.jpg 64w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-31f74c6 elementor-widget elementor-widget-text-editor\" data-id=\"31f74c6\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<ul><li><b style=\"font-style: inherit;\">Recursos avan\u00e7ados de comunica\u00e7\u00e3o<\/b><span style=\"font-weight: 400;\">: A maioria dos CLPs \u00e9 compat\u00edvel com protocolos de comunica\u00e7\u00e3o industrial (Ethernet\/IP, Profinet, Modbus etc.), o que permite o monitoramento remoto em tempo real e o fornecimento de dados para sistemas HMI ou SCADA\/MES.<\/span><\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-68be226 elementor-widget elementor-widget-heading\" data-id=\"68be226\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Desvantagens<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-503b627 elementor-widget elementor-widget-text-editor\" data-id=\"503b627\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<ul><li aria-level=\"1\"><b>Alto custo<\/b><span style=\"font-weight: 400;\">: Todos esses componentes podem ser encontrados na Amazon, e os c\u00e1lculos mostram que o pre\u00e7o desses componentes ser\u00e1 pr\u00f3ximo de $1.000 (cortina de luz de seguran\u00e7a de 1.000 mm: $499,00 (se comprada de n\u00f3s, ser\u00e1 apenas cerca de $260,0), PLC da Siemens: $220,00, dois pares de sensores fotoel\u00e9tricos de feixe passante: $100.00), enquanto os dois primeiros m\u00e9todos custam menos de $100 (se comprados de n\u00f3s), portanto, essa solu\u00e7\u00e3o \u00e9 mais cara.<\/span><\/li><li aria-level=\"1\"><b style=\"font-style: inherit;\">\u00c9 necess\u00e1rio ter conhecimento de programa\u00e7\u00e3o<\/b><span style=\"font-weight: 400;\">: Se voc\u00ea n\u00e3o estiver familiarizado com as linguagens de programa\u00e7\u00e3o de PLC, ser\u00e1 dif\u00edcil us\u00e1-las corretamente e gastar\u00e1 muito tempo para aprend\u00ea-las.<\/span><\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-43f3779 elementor-widget elementor-widget-heading\" data-id=\"43f3779\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Conclus\u00e3o<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-befc7a8 elementor-widget elementor-widget-text-editor\" data-id=\"befc7a8\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">Em resumo, h\u00e1 tr\u00eas m\u00e9todos pr\u00e1ticos dispon\u00edveis para a contagem de objetos com cortinas de luz de seguran\u00e7a: emparelhamento com um contador cumulativo, um contador predefinido e uma combina\u00e7\u00e3o de PLC + HMI.<\/span><\/p><p><span style=\"font-weight: 400;\">Se estiver procurando cortinas de luz de seguran\u00e7a, contadores cumulativos e rel\u00e9s de contador predefinidos confi\u00e1veis, de alta qualidade e com pre\u00e7os razo\u00e1veis, <\/span><span style=\"color: #ff0000;\"><a style=\"color: #ff0000;\" href=\"https:\/\/lorentzzi.com\/pt\/\"><span style=\"font-weight: 400;\">Lorentzzi Electric<\/span><\/a><\/span><span style=\"font-weight: 400;\"> pode fornecer esses produtos. Voc\u00ea pode entrar em contato conosco enviando um e-mail para <\/span><span style=\"color: #ff0000;\"><a style=\"color: #ff0000;\" href=\"mailto:shonxu@lorentzzi.com\"><span style=\"font-weight: 400;\">shonxu@lorentzzi.com<\/span><\/a><\/span><span style=\"font-weight: 400;\">.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"<p>Do you need to count vehicles entering and exiting a parking lot, or tally goods passing through conveyor belts at varying heights in a designated area? Point-to-point through-beam photoelectric sensors are a common option, yet they pose notable limitations in practical applications.\u00a0 But, vehicle models and tally goods feature different heights, and improper sensor mounting\u2014either [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":19790,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center 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