{"id":19947,"date":"2026-03-08T18:08:19","date_gmt":"2026-03-08T10:08:19","guid":{"rendered":"https:\/\/lorentzzi.com\/?p=19947"},"modified":"2026-03-17T18:02:46","modified_gmt":"2026-03-17T10:02:46","slug":"3-methods-to-identify-and-check-pnp-and-npn-sensor","status":"publish","type":"post","link":"https:\/\/lorentzzi.com\/es\/3-methods-to-identify-and-check-pnp-and-npn-sensor\/","title":{"rendered":"3 M\u00e9todos para identificar y comprobar sensores PNP y NPN"},"content":{"rendered":"<div data-elementor-type=\"wp-post\" data-elementor-id=\"19947\" class=\"elementor elementor-19947\" data-elementor-post-type=\"post\">\n\t\t\t\t<div class=\"elementor-element elementor-element-aebaa6c e-flex e-con-boxed e-con e-parent\" data-id=\"aebaa6c\" 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-308d7f6 elementor-widget elementor-widget-text-editor\" data-id=\"308d7f6\" 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;\">\u00bfSe ha encontrado alguna vez con este problema?<\/span><\/p><p><span style=\"font-weight: 400;\">Su <\/span><span style=\"color: #ff0000;\"><a style=\"color: #ff0000;\" href=\"https:\/\/lorentzzi.com\/es\/sensores-de-proximidad\/\"><span style=\"font-weight: 400;\">sensor de proximidad<\/span><\/a><\/span><span style=\"font-weight: 400;\"> lleva mucho tiempo en uso, su etiqueta se ha desgastado y ha dejado de funcionar. Quieres sustituirlo, pero no est\u00e1s seguro de si elegir un tipo de salida NPN o PNP.<\/span><\/p><p><span style=\"font-weight: 400;\">Entonces, \u00bfc\u00f3mo puede identificar si su sensor es NPN o PNP?<\/span><\/p><p><span style=\"font-weight: 400;\">Esto es sencillo para los t\u00e9cnicos experimentados, pero puede suponer un reto para los principiantes.<\/span><\/p><p><span style=\"font-weight: 400;\">Por lo tanto, en este post, compartiremos 3 m\u00e9todos pr\u00e1cticos para determinar el tipo de salida de su sensor:<\/span><\/p><ol><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Identificar a partir de la placa de caracter\u00edsticas,<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Prueba con un mult\u00edmetro,<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Compru\u00e9belo con un comprobador de sensores espec\u00edfico.<\/span><\/li><\/ol><p><span style=\"font-weight: 400;\">Veamos los pasos detallados.<\/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-6f906f4 elementor-widget elementor-widget-heading\" data-id=\"6f906f4\" 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\">Comprensi\u00f3n del sensor PNP NPN<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-8967bc2 eael-product-grid-column-4 elementor-widget elementor-widget-eicon-woocommerce\" data-id=\"8967bc2\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"eicon-woocommerce.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\n        <div class=\"eael-product-grid eael-product-simple grid\" id=\"eael-product-grid\" data-widget-id=\"8967bc2\" data-page-id=\"19947\" data-nonce=\"024d9859c3\" >\n            <div class=\"woocommerce\">\n                <ul class=\"products eael-post-appender eael-post-appender-8967bc2\" data-ssi-desktop=\"no\" data-ssi-tablet=\"no\" data-ssi-mobile=\"no\" data-layout-mode=\"grid\"> <li class=\"product\">\n<div class=\"eael-product-wrap\" data-src=\"\" data-src-hover=\"\">\n    <a href=\"https:\/\/lorentzzi.com\/es\/products\/proximity-sensor\/inductive-proximity-sensor\/sn04-p-inductive-proximity-sensor\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\"><img fetchpriority=\"high\" decoding=\"async\" width=\"300\" height=\"300\" src=\"https:\/\/lorentzzi.com\/wp-content\/uploads\/2025\/12\/SN04-P-Inductiv-Proximity-Sensor-2-300x300.jpg\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail wvs-archive-product-image\" alt=\"SN04-P Sensor de proximidad inductivo\" loading=\"eager\" srcset=\"https:\/\/lorentzzi.com\/wp-content\/uploads\/2025\/12\/SN04-P-Inductiv-Proximity-Sensor-2-300x300.jpg 300w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2025\/12\/SN04-P-Inductiv-Proximity-Sensor-2-150x150.jpg 150w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2025\/12\/SN04-P-Inductiv-Proximity-Sensor-2-12x12.jpg 12w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2025\/12\/SN04-P-Inductiv-Proximity-Sensor-2-600x600.jpg 600w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2025\/12\/SN04-P-Inductiv-Proximity-Sensor-2-100x100.jpg 100w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2025\/12\/SN04-P-Inductiv-Proximity-Sensor-2-64x64.jpg 64w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2025\/12\/SN04-P-Inductiv-Proximity-Sensor-2.jpg 640w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/a><div class=\"eael-product-title\">\n    <a href=\"https:\/\/lorentzzi.com\/es\/products\/proximity-sensor\/inductive-proximity-sensor\/sn04-p-inductive-proximity-sensor\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\"><h3 class=\"woocommerce-loop-product__title\">SN04-P Sensor de proximidad inductivo<\/h3><\/a>\n    <\/div>    <a href=\"https:\/\/lorentzzi.com\/es\/products\/proximity-sensor\/inductive-proximity-sensor\/sn04-p-inductive-proximity-sensor\/\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_19569\" data-quantity=\"1\" class=\"button product_type_simple\" data-product_id=\"19569\" data-product_sku=\"\" aria-label=\"Lee m\u00e1s sobre \u201cSN04-P Inductive Proximity Sensor\u201d\" rel=\"nofollow\" data-success_message=\"\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\">Leer m\u00e1s<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_19569\" class=\"screen-reader-text\">\n\t\t\t<\/span>\n    \n<\/div>\n\n<\/li> <li class=\"product\">\n<div class=\"eael-product-wrap\" data-src=\"\" data-src-hover=\"\">\n    <a href=\"https:\/\/lorentzzi.com\/es\/products\/proximity-sensor\/photoelectric-sensor\/g30-photoelectric-sensor\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\"><img decoding=\"async\" width=\"300\" height=\"300\" src=\"https:\/\/lorentzzi.com\/wp-content\/uploads\/2023\/04\/G30-photoeletrical-sensor-1-300x300.jpg\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail wvs-archive-product-image\" alt=\"Lorentzzi M30 tama\u00f1o de rosca G30 barrera fotoel\u00e9ctrica\" loading=\"eager\" srcset=\"https:\/\/lorentzzi.com\/wp-content\/uploads\/2023\/04\/G30-photoeletrical-sensor-1-300x300.jpg 300w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2023\/04\/G30-photoeletrical-sensor-1-150x150.jpg 150w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2023\/04\/G30-photoeletrical-sensor-1-600x600.jpg 600w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2023\/04\/G30-photoeletrical-sensor-1-100x100.jpg 100w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2023\/04\/G30-photoeletrical-sensor-1-64x64.jpg 64w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2023\/04\/G30-photoeletrical-sensor-1.jpg 640w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/a><div class=\"eael-product-title\">\n    <a href=\"https:\/\/lorentzzi.com\/es\/products\/proximity-sensor\/photoelectric-sensor\/g30-photoelectric-sensor\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\"><h3 class=\"woocommerce-loop-product__title\">G30 Barrera fotoel\u00e9ctrica<\/h3><\/a>\n    <\/div>    <a href=\"https:\/\/lorentzzi.com\/es\/products\/proximity-sensor\/photoelectric-sensor\/g30-photoelectric-sensor\/\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_7707\" data-quantity=\"1\" class=\"button product_type_simple\" data-product_id=\"7707\" data-product_sku=\"\" aria-label=\"Lee m\u00e1s sobre \u201cG30 Photoelectric Sensor\u201d\" rel=\"nofollow\" data-success_message=\"\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\">Leer m\u00e1s<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_7707\" class=\"screen-reader-text\">\n\t\t\t<\/span>\n    \n<\/div>\n\n<\/li> <li class=\"product\">\n<div class=\"eael-product-wrap\" data-src=\"\" data-src-hover=\"\">\n    <a href=\"https:\/\/lorentzzi.com\/es\/products\/proximity-sensor\/inductive-proximity-sensor\/sn04-n-inductive-proximity-sensor\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\"><img decoding=\"async\" width=\"300\" height=\"300\" src=\"https:\/\/lorentzzi.com\/wp-content\/uploads\/2023\/03\/SN04-N-Inductive-Proximity-Sensor-1-300x300.jpg\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail wvs-archive-product-image\" alt=\"Sensor de proximidad inductivo SN04-N\" loading=\"eager\" srcset=\"https:\/\/lorentzzi.com\/wp-content\/uploads\/2023\/03\/SN04-N-Inductive-Proximity-Sensor-1-300x300.jpg 300w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2023\/03\/SN04-N-Inductive-Proximity-Sensor-1-150x150.jpg 150w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2023\/03\/SN04-N-Inductive-Proximity-Sensor-1-600x600.jpg 600w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2023\/03\/SN04-N-Inductive-Proximity-Sensor-1-100x100.jpg 100w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2023\/03\/SN04-N-Inductive-Proximity-Sensor-1-64x64.jpg 64w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2023\/03\/SN04-N-Inductive-Proximity-Sensor-1.jpg 640w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/a><div class=\"eael-product-title\">\n    <a href=\"https:\/\/lorentzzi.com\/es\/products\/proximity-sensor\/inductive-proximity-sensor\/sn04-n-inductive-proximity-sensor\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\"><h3 class=\"woocommerce-loop-product__title\">Sensor de proximidad inductivo SN04-N<\/h3><\/a>\n    <\/div>    <a href=\"https:\/\/lorentzzi.com\/es\/products\/proximity-sensor\/inductive-proximity-sensor\/sn04-n-inductive-proximity-sensor\/\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_7211\" data-quantity=\"1\" class=\"button product_type_simple\" data-product_id=\"7211\" data-product_sku=\"\" aria-label=\"Lee m\u00e1s sobre \u201cSN04-N Inductive Proximity Sensor\u201d\" rel=\"nofollow\" data-success_message=\"\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\">Leer m\u00e1s<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_7211\" class=\"screen-reader-text\">\n\t\t\t<\/span>\n    \n<\/div>\n\n<\/li> <li class=\"product\">\n<div class=\"eael-product-wrap\" data-src=\"\" data-src-hover=\"\">\n    <a href=\"https:\/\/lorentzzi.com\/es\/products\/proximity-sensor\/inductive-proximity-sensor\/m30-proximity-sensor-30mm-diameter-inductive-proximity-sensor\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\"><img decoding=\"async\" width=\"300\" height=\"300\" src=\"https:\/\/lorentzzi.com\/wp-content\/uploads\/2023\/02\/LM30-2-300x300.jpg\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail wvs-archive-product-image\" alt=\"Sensor de proximidad M30 foto-1\" loading=\"eager\" srcset=\"https:\/\/lorentzzi.com\/wp-content\/uploads\/2023\/02\/LM30-2-300x300.jpg 300w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2023\/02\/LM30-2-150x150.jpg 150w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2023\/02\/LM30-2-600x600.jpg 600w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2023\/02\/LM30-2-100x100.jpg 100w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2023\/02\/LM30-2-64x64.jpg 64w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2023\/02\/LM30-2.jpg 640w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/a><div class=\"eael-product-title\">\n    <a href=\"https:\/\/lorentzzi.com\/es\/products\/proximity-sensor\/inductive-proximity-sensor\/m30-proximity-sensor-30mm-diameter-inductive-proximity-sensor\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\"><h3 class=\"woocommerce-loop-product__title\">Sensor de proximidad M30, sensor de proximidad inductivo de 30 mm de di\u00e1metro<\/h3><\/a>\n    <\/div>    <a href=\"https:\/\/lorentzzi.com\/es\/products\/proximity-sensor\/inductive-proximity-sensor\/m30-proximity-sensor-30mm-diameter-inductive-proximity-sensor\/\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_6968\" data-quantity=\"1\" class=\"button product_type_simple\" data-product_id=\"6968\" data-product_sku=\"\" aria-label=\"Lee m\u00e1s sobre \u201cM30 Proximity Sensor, 30mm Diameter Inductive Proximity Sensor\u201d\" rel=\"nofollow\" data-success_message=\"\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\">Leer m\u00e1s<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_6968\" class=\"screen-reader-text\">\n\t\t\t<\/span>\n    \n<\/div>\n\n<\/li><\/ul>            <\/div>\n        <\/div>\n\n        <script type=\"text\/javascript\">\n            jQuery(document).ready(function($) {\n                var $scope = jQuery(\".elementor-element-8967bc2\");\n                var $products = $('.products', $scope);\n                var $layout_mode = $products.data('layout-mode');\n                \n                if ( $layout_mode === 'masonry' ) {\n                    \/\/ init isotope\n                    var $isotope_products = $products.isotope({\n                        itemSelector: \"li.product\",\n                        layoutMode: $layout_mode,\n                        percentPosition: true\n                    });\n\n                    $isotope_products.imagesLoaded().progress( function() {\n                        $isotope_products.isotope('layout');\n                    })\n                    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src=\"https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/03\/NPN-and-PNP-sensors-common-electrode-connection.jpg\" class=\"attachment-large size-large wp-image-19943\" alt=\"Conexi\u00f3n de electrodo com\u00fan para sensores NPN y PNP\" srcset=\"https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/03\/NPN-and-PNP-sensors-common-electrode-connection.jpg 1024w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/03\/NPN-and-PNP-sensors-common-electrode-connection-300x150.jpg 300w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/03\/NPN-and-PNP-sensors-common-electrode-connection-768x384.jpg 768w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/03\/NPN-and-PNP-sensors-common-electrode-connection-18x9.jpg 18w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/03\/NPN-and-PNP-sensors-common-electrode-connection-600x300.jpg 600w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/03\/NPN-and-PNP-sensors-common-electrode-connection-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-1fe469c elementor-widget elementor-widget-text-editor\" data-id=\"1fe469c\" 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><b>Sensores NPN<\/b><span style=\"font-weight: 400;\">: Los sensores NPN se utilizan mucho en pa\u00edses asi\u00e1ticos como China y Jap\u00f3n. Normalmente controlan el terminal negativo (0V) de la fuente de alimentaci\u00f3n. Por ejemplo, un sensor NPN normalmente abierto (NO) emite una se\u00f1al de bajo nivel cuando detecta un objeto.<\/span><\/p><p><b>Sensores PNP<\/b><span style=\"font-weight: 400;\">: A diferencia de los sensores NPN, los sensores PNP ocupan la mayor parte de la cuota de mercado en Europa y Estados Unidos. Normalmente controlan el terminal positivo (VCC) de la fuente de alimentaci\u00f3n. Del mismo modo, un sensor PNP normalmente abierto (NO) emite una se\u00f1al de alto nivel cuando detecta un objeto.<\/span><\/p><p><span style=\"font-weight: 400;\">Consejos: Si quieres saber m\u00e1s diferencias entre los sensores NPN y PNP, puedes leer nuestro art\u00edculo: <\/span><span style=\"color: #ff0000;\"><a style=\"color: #ff0000;\" href=\"https:\/\/lorentzzi.com\/es\/pnp-vs-npn-proximity-sensors-key-differences-wiring-diagram-and-how-to-choose\/\"><span style=\"font-weight: 400;\">Sensores de proximidad PNP vs NPN: Diferencias clave, diagrama de cableado y c\u00f3mo elegir<\/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<div class=\"elementor-element elementor-element-84b09c8 elementor-widget elementor-widget-heading\" data-id=\"84b09c8\" 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: Compruebe la placa de caracter\u00edsticas y el esquema el\u00e9ctrico<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-36239b0 elementor-widget elementor-widget-image\" data-id=\"36239b0\" 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\/03\/Distinguishing-between-PNP-and-NPN-sensors-by-their-nameplates.jpg\" class=\"attachment-large size-large wp-image-19944\" alt=\"Distinci\u00f3n entre sensores PNP y NPN por sus placas de caracter\u00edsticas\" srcset=\"https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/03\/Distinguishing-between-PNP-and-NPN-sensors-by-their-nameplates.jpg 1024w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/03\/Distinguishing-between-PNP-and-NPN-sensors-by-their-nameplates-300x150.jpg 300w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/03\/Distinguishing-between-PNP-and-NPN-sensors-by-their-nameplates-768x384.jpg 768w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/03\/Distinguishing-between-PNP-and-NPN-sensors-by-their-nameplates-18x9.jpg 18w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/03\/Distinguishing-between-PNP-and-NPN-sensors-by-their-nameplates-600x300.jpg 600w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/03\/Distinguishing-between-PNP-and-NPN-sensors-by-their-nameplates-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-3df7680 elementor-widget elementor-widget-text-editor\" data-id=\"3df7680\" 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;\">La forma m\u00e1s sencilla de identificar si un sensor es de tipo NPN o PNP es comprobar su placa de caracter\u00edsticas. El cable marr\u00f3n (BN) debe conectarse al terminal positivo de la fuente de alimentaci\u00f3n, y el cable azul (BU) debe conectarse al terminal negativo. No hay diferencia entre los sensores de tipo NPN y PNP a este respecto.<\/span><\/p><p><span style=\"font-weight: 400;\">La diferencia radica en sus cables de se\u00f1al (BK, cable negro).<\/span><\/p><p><span style=\"font-weight: 400;\">Como se muestra en la parte derecha del diagrama anterior, el cable de se\u00f1al de un sensor de tipo PNP debe conectarse al terminal negativo (BU, cable azul) para formar un circuito cerrado completo.<\/span><\/p><p><span style=\"font-weight: 400;\">Por el contrario, el cable de se\u00f1al de un sensor de tipo NPN debe conectarse al terminal positivo para formar un circuito cerrado completo.<\/span><\/p><p><span style=\"font-weight: 400;\">Por lo tanto, en comparaci\u00f3n con los diagramas de cableado para sensores de tipo PNP y NPN de la derecha, el sensor del lado izquierdo del diagrama es un sensor de salida de tipo PNP.<\/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-f4514b7 elementor-widget elementor-widget-heading\" data-id=\"f4514b7\" 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: Medici\u00f3n de la tensi\u00f3n con un mult\u00edmetro (el m\u00e1s recomendado)<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-a4a1a7e elementor-widget elementor-widget-text-editor\" data-id=\"a4a1a7e\" 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 los ingenieros el\u00e9ctricos o electricistas, un mult\u00edmetro es la herramienta de comprobaci\u00f3n m\u00e1s utilizada. Entonces, \u00bfpodemos utilizarlo para comprobar el tipo de un sensor? La respuesta es s\u00ed. A continuaci\u00f3n encontrar\u00e1 una gu\u00eda sobre c\u00f3mo utilizar un mult\u00edmetro para determinar si un sensor es de tipo NPN o PNP.<\/span><\/p><p><span style=\"font-weight: 400;\">En primer lugar, prepara los siguientes materiales: <span style=\"color: #ff0000;\"><a style=\"color: #ff0000;\" href=\"https:\/\/cntnmcb.com\/residual-current-circuit-breaker-with-overcurrent-protection\/\" target=\"_blank\" rel=\"noopener\">un AC RCBO<\/a><\/span>, Una fuente de alimentaci\u00f3n conmutada de 24 V CC, el sensor sometido a prueba y un mult\u00edmetro.<\/span><\/p><p><span style=\"font-weight: 400;\">Los pasos de funcionamiento son los siguientes:<\/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-0786356 elementor-widget elementor-widget-image\" data-id=\"0786356\" 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\/03\/Use-multimeter-to-identify-the-sensor-is-PNP-or-NPN-wring-diagram.jpg\" class=\"attachment-large size-large wp-image-19945\" alt=\"Utilizando el mult\u00edmetro para identificar el sensor es PNP o NPN wring diagrama\" srcset=\"https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/03\/Use-multimeter-to-identify-the-sensor-is-PNP-or-NPN-wring-diagram.jpg 1024w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/03\/Use-multimeter-to-identify-the-sensor-is-PNP-or-NPN-wring-diagram-300x150.jpg 300w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/03\/Use-multimeter-to-identify-the-sensor-is-PNP-or-NPN-wring-diagram-768x384.jpg 768w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/03\/Use-multimeter-to-identify-the-sensor-is-PNP-or-NPN-wring-diagram-18x9.jpg 18w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/03\/Use-multimeter-to-identify-the-sensor-is-PNP-or-NPN-wring-diagram-600x300.jpg 600w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/03\/Use-multimeter-to-identify-the-sensor-is-PNP-or-NPN-wring-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-5edb142 elementor-widget elementor-widget-text-editor\" data-id=\"5edb142\" 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<ol><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Conecte la alimentaci\u00f3n de CA al terminal de entrada de la fuente de alimentaci\u00f3n conmutada a trav\u00e9s del <span style=\"color: #ff0000;\"><a style=\"color: #ff0000;\" href=\"https:\/\/cntnmcb.com\/residual-current-circuit-breaker-with-overcurrent-protection\/\" target=\"_blank\" rel=\"noopener\">RCBO (disyuntor residual con protecci\u00f3n contra sobrecargas)<\/a><\/span> (Nota: el RCBO debe estar en estado abierto en este momento; no conecte la alimentaci\u00f3n).<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Conecte el cable de alimentaci\u00f3n del sensor a la fuente de alimentaci\u00f3n conmutada: conecte el cable marr\u00f3n al terminal positivo (+24 V) de la fuente de alimentaci\u00f3n conmutada y el cable azul al terminal negativo (0 V).<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Coloque el mult\u00edmetro en el rango de tensi\u00f3n continua (DCV). Conecte la sonda roja al terminal positivo (+24V) de la fuente de alimentaci\u00f3n conmutada, y la sonda negra al cable de se\u00f1al negro (cable de salida) del sensor.<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Cierre el RCBO para alimentar el sensor. A continuaci\u00f3n, acerque el objeto que desea medir a la superficie de detecci\u00f3n del sensor para activarlo y observe simult\u00e1neamente el valor de tensi\u00f3n que aparece en el mult\u00edmetro.<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">M\u00e9todo de juicio:<\/span><\/li><\/ol><p><span style=\"font-weight: 400;\">Si el mult\u00edmetro muestra aproximadamente 24V (es decir, la tensi\u00f3n de alimentaci\u00f3n), el sensor es de tipo NPN (como un tipo NPN emite un nivel bajo, el cable negro es conductor a tierra, por lo que la tensi\u00f3n entre el terminal positivo y el cable negro es de 24V);<\/span><\/p><p><span style=\"font-weight: 400;\">Si el mult\u00edmetro muestra cerca de 0V, el sensor es de tipo PNP (como un tipo PNP emite un nivel alto, el cable negro es conductor al terminal positivo, por lo que la tensi\u00f3n entre el terminal positivo y el cable negro es de 0V).<\/span><\/p><p><span style=\"font-weight: 400;\">Nota: Aseg\u00farese de que el cableado es correcto durante el funcionamiento para evitar cortocircuitos. El sensor debe estar en condiciones de funcionamiento durante la medici\u00f3n, y deben tomarse precauciones de seguridad.<\/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-9f6ed7b elementor-widget elementor-widget-heading\" data-id=\"9f6ed7b\" 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: Utilizaci\u00f3n de un comprobador de sensores PNP\/NPN<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-b70e30a elementor-widget elementor-widget-image\" data-id=\"b70e30a\" 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\/03\/Using-sensor-tester-to-confirm-the-PNP-or-NPN-sensor.jpg\" class=\"attachment-large size-large wp-image-19942\" alt=\"Uso del comprobador de sensores para confirmar el sensor PNP o NPN\" srcset=\"https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/03\/Using-sensor-tester-to-confirm-the-PNP-or-NPN-sensor.jpg 1024w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/03\/Using-sensor-tester-to-confirm-the-PNP-or-NPN-sensor-300x150.jpg 300w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/03\/Using-sensor-tester-to-confirm-the-PNP-or-NPN-sensor-768x384.jpg 768w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/03\/Using-sensor-tester-to-confirm-the-PNP-or-NPN-sensor-18x9.jpg 18w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/03\/Using-sensor-tester-to-confirm-the-PNP-or-NPN-sensor-600x300.jpg 600w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/03\/Using-sensor-tester-to-confirm-the-PNP-or-NPN-sensor-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-a597db5 elementor-widget elementor-widget-text-editor\" data-id=\"a597db5\" 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;\">Si dispone de un presupuesto suficiente y necesita distinguir con frecuencia los tipos de sensores, el comprobador de sensores que se muestra en la imagen anterior es una mejor opci\u00f3n. Es m\u00e1s r\u00e1pido y sencillo que utilizar un mult\u00edmetro.<\/span><\/p><p><span style=\"font-weight: 400;\">A continuaci\u00f3n, te explicamos c\u00f3mo utilizar este comprobador de sensores.<\/span><\/p><p><span style=\"font-weight: 400;\">Su uso es muy sencillo. S\u00f3lo tiene que conectar el cable marr\u00f3n del sensor al terminal positivo del comprobador, el cable azul al terminal negativo y el cable de se\u00f1al del sensor al terminal de salida. Una vez realizado el cableado, encienda el comprobador e identificar\u00e1 autom\u00e1ticamente el tipo de sensor: si es de tipo PNP, se encender\u00e1 la luz indicadora amarilla PNP; si es de tipo NPN, se encender\u00e1 la luz indicadora NPN.<\/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-a8fa3d1 elementor-widget elementor-widget-heading\" data-id=\"a8fa3d1\" 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\">Conclusi\u00f3n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-a93e961 elementor-widget elementor-widget-text-editor\" data-id=\"a93e961\" 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;\">En resumen, puede determinar si su sensor es de tipo NPN o PNP leyendo la placa de caracter\u00edsticas del sensor y el diagrama de cableado, y utilizando un mult\u00edmetro o un comprobador de sensores PNP\/NPN.<\/span><\/p><p><span style=\"font-weight: 400;\">Si a\u00fan tiene preguntas sobre la diferenciaci\u00f3n de sensores o necesita asistencia t\u00e9cnica, <\/span><span style=\"color: #ff0000;\"><a style=\"color: #ff0000;\" href=\"https:\/\/lorentzzi.com\/es\/\"><span style=\"font-weight: 400;\">Lorentzzi El\u00e9ctrico<\/span><\/a><\/span><span style=\"font-weight: 400;\"> ofrece consulta gratuita. Puede ponerse en contacto con nosotros enviando un correo electr\u00f3nico a <\/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;\">, y nuestro personal le responder\u00e1 en un plazo de 24 horas.<\/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>Have you ever encountered this problem? Your proximity sensor has been in use for a long time, its label has worn off, and it has stopped working. You want to replace it, but you\u2019re not sure whether to choose an NPN or PNP output type. So how can you identify whether your sensor is NPN [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":19946,"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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center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[110],"tags":[],"class_list":["post-19947","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-sensor","desktop-align-center","tablet-align-left","mobile-align-left"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v24.0 (Yoast SEO v27.4) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>3 Methods to Identify and Check PNP and NPN Sensor<\/title>\n<meta name=\"description\" content=\"In this blog post, we will provide you 3 methods to identify and check PNP and NPN sensor, click to learn more now!\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" 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