{"id":8202,"date":"2025-07-01T17:00:53","date_gmt":"2025-07-01T09:00:53","guid":{"rendered":"https:\/\/www.wehopower.com\/?post_type=news&#038;p=8202"},"modified":"2026-08-31T14:16:51","modified_gmt":"2026-08-31T06:16:51","slug":"inductive-proximity-sensor-npn-vs-pnp","status":"publish","type":"news","link":"https:\/\/www.wehopower.com\/it\/news\/inductive-proximity-sensor-npn-vs-pnp\/","title":{"rendered":"Sensore di prossimit\u00e0 induttivo NPN vs PNP: 5 differenze principali"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_86 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Sommario<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Attiva\/disattiva Sommario\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Attiva\/disattiva<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewbox=\"0 0 24 24\" version=\"1.2\" baseprofile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.wehopower.com\/it\/news\/inductive-proximity-sensor-npn-vs-pnp\/#Introduction\" >Introduzione<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.wehopower.com\/it\/news\/inductive-proximity-sensor-npn-vs-pnp\/#How_Inductive_Proximity_Sensors_Work\" >Come funzionano i sensori di prossimit\u00e0 induttivi<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.wehopower.com\/it\/news\/inductive-proximity-sensor-npn-vs-pnp\/#Why_Understanding_NPN_vs_PNP_Matters\" >Perch\u00e9 \u00e8 importante comprendere la differenza tra NPN e PNP<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.wehopower.com\/it\/news\/inductive-proximity-sensor-npn-vs-pnp\/#Understanding_NPN_and_PNP\" >Comprensione di NPN e PNP<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.wehopower.com\/it\/news\/inductive-proximity-sensor-npn-vs-pnp\/#What_is_an_NPN_Sensor\" >Cos'\u00e8 un sensore NPN?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.wehopower.com\/it\/news\/inductive-proximity-sensor-npn-vs-pnp\/#What_is_a_PNP_Sensor\" >Cos'\u00e8 un sensore PNP?<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.wehopower.com\/it\/news\/inductive-proximity-sensor-npn-vs-pnp\/#5_Main_Differences_Between_NPN_and_PNP_Sensors\" >5 differenze principali tra sensori NPN e PNP<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.wehopower.com\/it\/news\/inductive-proximity-sensor-npn-vs-pnp\/#ON_Logic_Level\" >ON Livello logico<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/www.wehopower.com\/it\/news\/inductive-proximity-sensor-npn-vs-pnp\/#Wiring_Setup\" >Configurazione del cablaggio<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/www.wehopower.com\/it\/news\/inductive-proximity-sensor-npn-vs-pnp\/#Regional_Use\" >Uso regionale<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/www.wehopower.com\/it\/news\/inductive-proximity-sensor-npn-vs-pnp\/#Common_Confusion\" >Confusione comune<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/www.wehopower.com\/it\/news\/inductive-proximity-sensor-npn-vs-pnp\/#Conclusion\" >Conclusione<\/a><\/li><\/ul><\/nav><\/div>\n<h2 data-start=\"137\" data-end=\"155\"><span class=\"ez-toc-section\" id=\"Introduction\"><\/span>Introduzione<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3 data-start=\"157\" data-end=\"203\"><span class=\"ez-toc-section\" id=\"How_Inductive_Proximity_Sensors_Work\"><\/span>Come funzionano i sensori di prossimit\u00e0 induttivi<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p data-start=\"204\" data-end=\"450\"><a href=\"https:\/\/www.weho-power.com\/product\/lja12-long-cylindrical-inductive-proximity-switch\/\" target=\"_blank\" rel=\"noopener\">Sensori di prossimit\u00e0 induttivi<\/a> rilevare oggetti metallici senza toccarli. Usano un campo elettromagnetico e quando un oggetto metallico entra in questo campo, il sensore invia un segnale. Questi sensori sono comuni nelle fabbriche per aiutare le macchine a funzionare senza intoppi.<\/p>\n<h3 data-start=\"452\" data-end=\"498\"><a href=\"https:\/\/www.weho-power.com\/product\/lja18-long-cylindrical-inductive-proximity-switch\/\" target=\"_blank\" rel=\"noopener\"><img fetchpriority=\"high\" decoding=\"async\" class=\"wp-image-6983 alignnone\" src=\"https:\/\/www.weho-power.com\/wp-content\/uploads\/2024\/08\/LJA30-Long-Cylindrical-Inductive-Proximity-Switch-9.jpg\" alt=\"Sensore di prossimit\u00e0 induttivo NPN vs PNP: 5 differenze principali title=\" width=\"324\" height=\"324\" inductive proximity sensor npn vs pnp: main differences title=\"\" srcset=\"https:\/\/i1.wp.com\/www.wehopower.com\/wp-content\/uploads\/2024\/08\/LJA30-Long-Cylindrical-Inductive-Proximity-Switch-9.jpg?quality=85&strip=all 800w, https:\/\/i1.wp.com\/www.wehopower.com\/wp-content\/uploads\/2024\/08\/LJA30-Long-Cylindrical-Inductive-Proximity-Switch-9-300x300.jpg?quality=85&strip=all 300w, https:\/\/i1.wp.com\/www.wehopower.com\/wp-content\/uploads\/2024\/08\/LJA30-Long-Cylindrical-Inductive-Proximity-Switch-9-500x500.jpg?quality=85&strip=all 500w, https:\/\/i1.wp.com\/www.wehopower.com\/wp-content\/uploads\/2024\/08\/LJA30-Long-Cylindrical-Inductive-Proximity-Switch-9-768x768.jpg?quality=85&strip=all 768w\" sizes=\"(max-width: 324px) 100vw, 324px\" \/><\/a><\/h3>\n<p data-start=\"452\" data-end=\"498\">Saperne di pi\u00f9: <a href=\"https:\/\/www.wehopower.com\/it\/news\/what-is-a-proximity-sensor\/\">Cos'\u00e8 un sensore di prossimit\u00e0?<\/a><\/p>\n<p data-start=\"452\" data-end=\"498\">Saperne di pi\u00f9: <a href=\"https:\/\/www.wehopower.com\/it\/news\/how-does-a-proximity-sensor-work\/\">Come funziona un sensore di prossimit\u00e0?<\/a><\/p>\n<h3 data-start=\"452\" data-end=\"498\"><span class=\"ez-toc-section\" id=\"Why_Understanding_NPN_vs_PNP_Matters\"><\/span>Perch\u00e9 \u00e8 importante comprendere la differenza tra NPN e PNP<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p data-start=\"499\" data-end=\"681\">Conoscere la differenza tra <a href=\"https:\/\/www.weho-power.com\/product\/lja30-long-cylindrical-inductive-proximity-switch\/\" target=\"_blank\" rel=\"noopener\">Sensori NPN e PNP<\/a> \u00e8 importante perch\u00e9 influisce sul modo in cui colleghi il sensore al tuo sistema di controllo. L'utilizzo del tipo sbagliato pu\u00f2 causare errori o danni.<\/p>\n<h2 data-start=\"683\" data-end=\"714\"><span class=\"ez-toc-section\" id=\"Understanding_NPN_and_PNP\"><\/span>Comprensione di NPN e PNP<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3 data-start=\"716\" data-end=\"748\"><span class=\"ez-toc-section\" id=\"What_is_an_NPN_Sensor\"><\/span>Cos'\u00e8 un sensore NPN?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p data-start=\"749\" data-end=\"878\">UN <a href=\"https:\/\/www.weho-power.com\/product\/lja12-long-cylindrical-inductive-proximity-switch\/\" target=\"_blank\" rel=\"noopener\">Sensore NPN<\/a> collega l'uscita a terra (negativo) quando rileva qualcosa. Ci\u00f2 significa che \u201cassorbe\u201d la corrente attraverso il carico.<\/p>\n<h3 data-start=\"880\" data-end=\"911\"><span class=\"ez-toc-section\" id=\"What_is_a_PNP_Sensor\"><\/span>Cos'\u00e8 un sensore PNP?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p data-start=\"912\" data-end=\"1015\">A <a href=\"https:\/\/www.weho-power.com\/product\/lja30-long-cylindrical-inductive-proximity-switch\/\" target=\"_blank\" rel=\"noopener\">Sensore PNP<\/a> collega l'uscita alla tensione positiva quando \u00e8 attiva. \u201cFornisce\u201d corrente al carico.<\/p>\n<h2 data-start=\"1017\" data-end=\"1069\"><span class=\"ez-toc-section\" id=\"5_Main_Differences_Between_NPN_and_PNP_Sensors\"><\/span>5 differenze principali tra sensori NPN e PNP<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<div class=\"_tableContainer_16hzy_1\">\n<div class=\"_tableWrapper_16hzy_14 group flex w-fit flex-col-reverse\" tabindex=\"-1\">\n<table class=\"w-fit min-w-(--thread-content-width)\" data-start=\"111\" data-end=\"914\">\n<thead data-start=\"111\" data-end=\"224\">\n<tr data-start=\"111\" data-end=\"224\">\n<th data-start=\"111\" data-end=\"133\" data-col-size=\"sm\">Differenza<\/th>\n<th data-start=\"133\" data-end=\"179\" data-col-size=\"md\">Sensore NPN<\/th>\n<th data-start=\"179\" data-end=\"224\" data-col-size=\"sm\">Sensore PNP<\/th>\n<\/tr>\n<\/thead>\n<tbody data-start=\"338\" data-end=\"914\">\n<tr data-start=\"338\" data-end=\"452\">\n<td data-start=\"338\" data-end=\"361\" data-col-size=\"sm\">Uscita del segnale<\/td>\n<td data-col-size=\"md\" data-start=\"361\" data-end=\"408\">Invia un segnale negativo (massa).<\/td>\n<td data-col-size=\"sm\" data-start=\"408\" data-end=\"452\">Invia un segnale di tensione positiva<\/td>\n<\/tr>\n<tr data-start=\"453\" data-end=\"567\">\n<td data-start=\"453\" data-end=\"476\" data-col-size=\"sm\">ON Livello logico<\/td>\n<td data-col-size=\"md\" data-start=\"476\" data-end=\"523\">ON quando collegato a terra (0 V)<\/td>\n<td data-col-size=\"sm\" data-start=\"523\" data-end=\"567\">ON quando collegato a tensione positiva<\/td>\n<\/tr>\n<tr data-start=\"568\" data-end=\"682\">\n<td data-start=\"568\" data-end=\"590\" data-col-size=\"sm\">Configurazione del cablaggio<\/td>\n<td data-col-size=\"md\" data-start=\"590\" data-end=\"638\">Carico cablato tra alimentazione positiva e uscita<\/td>\n<td data-col-size=\"sm\" data-start=\"638\" data-end=\"682\">Carico cablato tra uscita e terra<\/td>\n<\/tr>\n<tr data-start=\"683\" data-end=\"798\">\n<td data-start=\"683\" data-end=\"706\" data-col-size=\"sm\">Uso regionale<\/td>\n<td data-start=\"706\" data-end=\"754\" data-col-size=\"md\">Pi\u00f9 comune in Asia<\/td>\n<td data-start=\"754\" data-end=\"798\" data-col-size=\"sm\">Pi\u00f9 comune in Europa e Nord America<\/td>\n<\/tr>\n<tr data-start=\"799\" data-end=\"914\">\n<td data-start=\"799\" data-end=\"822\" data-col-size=\"sm\">Confusione comune<\/td>\n<td data-start=\"822\" data-end=\"870\" data-col-size=\"md\">Spesso scambiato per output positivo<\/td>\n<td data-start=\"870\" data-end=\"914\" data-col-size=\"sm\">Spesso scambiato per output negativo<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<div tabindex=\"-1\"><\/div>\n<div class=\"_tableWrapper_16hzy_14 group flex w-fit flex-col-reverse\" tabindex=\"-1\"><span style=\"font-size: 30px;\">Uscita del segnale<\/span><\/div>\n<\/div>\n<p data-start=\"1095\" data-end=\"1175\">I sensori NPN inviano un segnale negativo (massa). <a href=\"https:\/\/www.weho-power.com\/product\/lja30-long-cylindrical-inductive-proximity-switch\/\" target=\"_blank\" rel=\"noopener\">Sensori PNP<\/a> inviare un segnale positivo.<\/p>\n<h3 data-start=\"1177\" data-end=\"1201\"><a href=\"https:\/\/www.weho-power.com\/product\/lja18-long-cylindrical-inductive-proximity-switch\/\" target=\"_blank\" rel=\"noopener\"><img decoding=\"async\" class=\"wp-image-7706 alignnone\" src=\"https:\/\/www.weho-power.com\/wp-content\/uploads\/2025\/06\/20250609134018-684673d03e356.webp\" alt=\"Sensore di prossimit\u00e0 induttivo NPN vs PNP: 5 differenze principali title=\" width=\"353\" height=\"205\" inductive proximity sensor npn vs pnp: main differences title=\"\"><\/a><\/h3>\n<p data-start=\"1177\" data-end=\"1201\">Saperne di pi\u00f9: <a href=\"https:\/\/www.wehopower.com\/it\/news\/the-switch-mode-power-supply\/\">L'alimentatore a commutazione<\/a><\/p>\n<h3 data-start=\"1177\" data-end=\"1201\"><span class=\"ez-toc-section\" id=\"ON_Logic_Level\"><\/span>ON Livello logico<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p data-start=\"1202\" data-end=\"1306\"><a href=\"https:\/\/www.weho-power.com\/product\/lja30-long-cylindrical-inductive-proximity-switch\/\" target=\"_blank\" rel=\"noopener\">Sensori NPN<\/a> sono accesi quando collegati a terra (0 V). I sensori PNP sono ON quando collegati alla tensione positiva.<\/p>\n<h3 data-start=\"1308\" data-end=\"1330\"><span class=\"ez-toc-section\" id=\"Wiring_Setup\"><\/span>Configurazione del cablaggio<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p data-start=\"1331\" data-end=\"1467\">Per NPN, il carico \u00e8 collegato tra l'alimentazione positiva e l'uscita del sensore. Per PNP, il carico \u00e8 tra l'uscita del sensore e la terra.<\/p>\n<h3 data-start=\"1469\" data-end=\"1491\"><span class=\"ez-toc-section\" id=\"Regional_Use\"><\/span>Uso regionale<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p data-start=\"1492\" data-end=\"1581\"><a href=\"https:\/\/www.weho-power.com\/product\/lja12-long-cylindrical-inductive-proximity-switch\/\" target=\"_blank\" rel=\"noopener\">Sensori NPN<\/a> sono pi\u00f9 comuni in Asia. <a href=\"https:\/\/www.weho-power.com\/products\/\" target=\"_blank\" rel=\"noopener\">Sensori PNP<\/a> sono popolari in Europa e Nord America.<\/p>\n<h3 data-start=\"1583\" data-end=\"1609\"><span class=\"ez-toc-section\" id=\"Common_Confusion\"><\/span>Confusione comune<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p data-start=\"1610\" data-end=\"1735\">Le persone spesso confondono quale sensore emette segnali positivi o negativi. Dipende dal cablaggio e dal tipo di transistor del sensore.<\/p>\n<p data-start=\"1610\" data-end=\"1735\">Saperne di pi\u00f9: <a href=\"https:\/\/www.wehopower.com\/it\/news\/how-to-test-an-inductive-sensor-6-methods-you-should-know\/\">Come testare un sensore induttivo<\/a><\/p>\n<h2 data-start=\"1737\" data-end=\"1755\"><span class=\"ez-toc-section\" id=\"Conclusion\"><\/span>Conclusione<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p data-start=\"1756\" data-end=\"2004\">Sia NPN che PNP <a href=\"https:\/\/www.weho-power.com\/product\/lja12-long-cylindrical-inductive-proximity-switch\/\" target=\"_blank\" rel=\"noopener\">sensori di prossimit\u00e0 induttivi<\/a> rilevare bene gli oggetti metallici. La differenza principale sta nei segnali di uscita e nel cablaggio. Conoscere queste differenze ti aiuta a scegliere il sensore giusto e a collegarlo correttamente per un funzionamento sicuro e affidabile.<\/p>","protected":false},"excerpt":{"rendered":"<p>Introduction How Inductive Proximity Sensors Work Inductive proximity sensors detect metal objects without touching them. They use an electromagnetic field, and when a metal object enters this field, the sensor sends a signal. These sensors are common in factories to help machines work smoothly. Learn More: What is a Proximity Sensor? Learn More: How Does&hellip; <a class=\"more-link\" href=\"https:\/\/www.wehopower.com\/it\/news\/inductive-proximity-sensor-npn-vs-pnp\/\">Continua a leggere <span class=\"screen-reader-text\">Sensore di prossimit\u00e0 induttivo NPN vs PNP: 5 differenze principali<\/span><\/a><\/p>","protected":false},"author":1,"featured_media":6939,"parent":0,"menu_order":321,"comment_status":"closed","ping_status":"closed","template":"","format":"standard","meta":{"_acf_changed":false,"_joinchat":[],"footnotes":""},"news_category":[149,148],"class_list":["post-8202","news","type-news","status-publish","format-standard","has-post-thumbnail","hentry","news_category-blog","news_category-industry-news","entry"],"acf":[],"post_mailing_queue_ids":[],"_links":{"self":[{"href":"https:\/\/www.wehopower.com\/it\/wp-json\/wp\/v2\/news\/8202","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.wehopower.com\/it\/wp-json\/wp\/v2\/news"}],"about":[{"href":"https:\/\/www.wehopower.com\/it\/wp-json\/wp\/v2\/types\/news"}],"author":[{"embeddable":true,"href":"https:\/\/www.wehopower.com\/it\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.wehopower.com\/it\/wp-json\/wp\/v2\/comments?post=8202"}],"version-history":[{"count":0,"href":"https:\/\/www.wehopower.com\/it\/wp-json\/wp\/v2\/news\/8202\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.wehopower.com\/it\/wp-json\/wp\/v2\/media\/6939"}],"wp:attachment":[{"href":"https:\/\/www.wehopower.com\/it\/wp-json\/wp\/v2\/media?parent=8202"}],"wp:term":[{"taxonomy":"news_category","embeddable":true,"href":"https:\/\/www.wehopower.com\/it\/wp-json\/wp\/v2\/news_category?post=8202"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}