{"id":9738,"date":"2026-01-20T09:22:49","date_gmt":"2026-01-20T09:22:49","guid":{"rendered":"https:\/\/www.omch.com\/?p=9738"},"modified":"2026-01-20T09:22:51","modified_gmt":"2026-01-20T09:22:51","slug":"normally-open-vs-normally-closed","status":"publish","type":"post","link":"https:\/\/www.omch.com\/tr\/normally-open-vs-normally-closed\/","title":{"rendered":"Normalde A\u00e7\u0131k vs Normalde Kapal\u0131: Temel Farkl\u0131l\u0131klar A\u00e7\u0131kland\u0131"},"content":{"rendered":"<p>Elektrik m\u00fchendisli\u011fi ve end\u00fcstriyel otomasyon d\u00fcnyas\u0131nda her \u015fey ikili bir se\u00e7ime dayan\u0131r: devre a\u00e7\u0131k m\u0131, kapal\u0131 m\u0131? Bu kula\u011fa kolay gelebilir, ancak sorunsuz \u00e7al\u0131\u015fan bir fabrika ile feci bir g\u00fcvenlik ar\u0131zas\u0131 aras\u0131ndaki fark\u0131 yaratan \u015fey, oraya ula\u015fman\u0131n ard\u0131ndaki mant\u0131kt\u0131r ve makine ar\u0131zaland\u0131\u011f\u0131nda ne olaca\u011f\u0131d\u0131r.<\/p>\n\n\n\n<p>Bu da bizi \u015fu temel kavramlara getiriyor <strong>Normalde A\u00e7\u0131k (NO)<\/strong> ve <strong>Normalde Kapal\u0131 (NC)<\/strong>. \u0130ster ilk r\u00f6lenizi ba\u011flayan bir \u00f6\u011frenci olun, ister karma\u015f\u0131k bir PLC (Programlanabilir Mant\u0131k Denetleyicisi) mimarisi geli\u015ftiren deneyimli bir m\u00fchendis, normalde kapal\u0131 ve normalde a\u00e7\u0131k mant\u0131\u011f\u0131n t\u00fcm ayr\u0131nt\u0131lar\u0131n\u0131 \u00f6\u011frenmelisiniz. Bu k\u0131lavuz, elektrik devrelerinizin verimli ve g\u00fcvenli olmas\u0131 i\u00e7in teknik ilkeler, ar\u0131za g\u00fcvenli\u011fi ilkeleri ve \u00e7al\u0131\u015fma se\u00e7imi ilkeleri konusunda size yol g\u00f6sterecektir.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">NO ve NC'nin Tan\u0131mlanmas\u0131: \u201cDinlenme Durumunu\u201d Anlamak\u201d<\/h2>\n\n\n\n<p>NO ve NC'nin ne oldu\u011funu bilmek i\u00e7in elektriksel ba\u011flamda \u201cnormal\u201d konumun ne anlama geldi\u011fini bilmemiz gerekir. Esasen, neyin normalde a\u00e7\u0131k ve neyin normalde kapal\u0131 oldu\u011funu anlamak i\u00e7in, bir par\u00e7an\u0131n varsay\u0131lan konumuna, enerjisiz konumuna veya dinlenme konumuna bak\u0131lmas\u0131 gerekti\u011fi s\u00f6ylenebilir. Bu varsay\u0131lan durumun do\u011fru bir \u015fekilde tan\u0131mlanmas\u0131, bir sistemin tam bir g\u00fc\u00e7 kayb\u0131 s\u0131ras\u0131nda nas\u0131l davranaca\u011f\u0131n\u0131 tahmin etmek i\u00e7in gereklidir. Bu, cihaz\u0131n rafta durdu\u011fu veya herhangi bir d\u0131\u015f kuvvete (fiziksel, elektriksel ve manyetik) maruz kalmad\u0131\u011f\u0131 durumdur.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Normalde A\u00e7\u0131k (NO):<\/strong> Dinlenme durumunda, elektrik kontaklar\u0131 fiziksel olarak ayr\u0131lm\u0131\u015ft\u0131r. Devre \u201ca\u00e7\u0131kt\u0131r\u201d, yani hi\u00e7bir ak\u0131m akamaz. Bu fiziksel bo\u015fluk, bir d\u00fc\u011fmeye bas\u0131lmas\u0131 veya bir kolun hareketi gibi belirli bir mekanik eylem kontaklar\u0131 bir araya getirene kadar kal\u0131r. Ba\u015flang\u0131\u00e7ta yukar\u0131 konumda olan bir asma k\u00f6pr\u00fc d\u00fc\u015f\u00fcn\u00fcn, bir operat\u00f6r (tetikleyici) k\u00f6pr\u00fcy\u00fc indirene (devreyi kapatana) kadar arabalar ge\u00e7emez.<\/li>\n\n\n\n<li><strong>Normalde Kapal\u0131 (NC): <\/strong>Dinlenme durumunda, elektrik kontaklar\u0131 fiziksel olarak temas halindedir. Bu da kapal\u0131 devrelere yol a\u00e7ar ve ak\u0131m serbest\u00e7e akar. Varsay\u0131lan olarak kapal\u0131 olan bir k\u00f6pr\u00fcd\u00fcr, k\u00f6pr\u00fc benzetmemizde, bir operat\u00f6r k\u00f6pr\u00fcy\u00fc kald\u0131rana kadar trafik k\u00f6pr\u00fcy\u00fc kullanmaktad\u0131r (<strong>a\u00e7\u0131l\u0131r<\/strong> devre) trafi\u011fi durdurmak i\u00e7in.<\/li>\n<\/ul>\n\n\n\n<p>Standart yayl\u0131 bir buton veya basit bir \u0131\u015f\u0131k anahtar\u0131 d\u00fc\u015f\u00fcn\u00fcn. <strong>Normalde A\u00e7\u0131k<\/strong> d\u00fc\u011fmeleri devreyi tamamlamak i\u00e7in basman\u0131z\u0131 sa\u011flar (kap\u0131 zili gibi). Devre zaten normalde kapal\u0131 bir anahtar taraf\u0131ndan kapat\u0131lm\u0131\u015ft\u0131r ve bu anahtara bas\u0131ld\u0131\u011f\u0131nda ba\u011flant\u0131 a\u00e7\u0131l\u0131r (bir konvey\u00f6r band\u0131n\u0131n \u201cDurdur\u201d d\u00fc\u011fmesinde oldu\u011fu gibi).<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1024\" height=\"768\" src=\"https:\/\/www.omch.com\/wp-content\/uploads\/2026\/01\/normally-open-vs-normally-closed4.webp\" alt=\"normalde a\u00e7\u0131k vs normalde kapal\u0131\" class=\"wp-image-9737\" srcset=\"https:\/\/www.omch.com\/wp-content\/uploads\/2026\/01\/normally-open-vs-normally-closed4.webp 1024w, https:\/\/www.omch.com\/wp-content\/uploads\/2026\/01\/normally-open-vs-normally-closed4-300x225.webp 300w, https:\/\/www.omch.com\/wp-content\/uploads\/2026\/01\/normally-open-vs-normally-closed4-768x576.webp 768w, https:\/\/www.omch.com\/wp-content\/uploads\/2026\/01\/normally-open-vs-normally-closed4-16x12.webp 16w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Normalde A\u00e7\u0131k vs Normalde Kapal\u0131: Temel Fonksiyonel Farkl\u0131l\u0131klar<\/h2>\n\n\n\n<p>Temel tan\u0131mlar a\u00e7\u0131k olsa da, sistemin \u00e7al\u0131\u0122\u0131rken ve g\u00fc\u00e7s\u00fczken nas\u0131l davranaca\u011f\u0131, bu iki modun i\u0122levsel mant\u0131\u011f\u0131ndaki \u00f6nemli farkl\u0131l\u0131klar taraf\u0131ndan belirlenir. NO veya NC karar\u0131 rastgele bir karar de\u011fil, makinenin temerr\u00fcde d\u00fc\u015ferek ne yapmak istedi\u011fine dayanan hesaplanm\u0131\u015f bir karard\u0131r.<\/p>\n\n\n\n<p>\u0130ki devletin teknik a\u00e7\u0131dan kar\u015f\u0131la\u015ft\u0131r\u0131lmas\u0131 a\u015fa\u011f\u0131daki gibidir:<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td>\u00d6zellik<\/td><td>Normalde A\u00e7\u0131k (NO)<\/td><td>Normalde Kapal\u0131 (NC)<\/td><\/tr><tr><td>Dinlenme Durumu<\/td><td>Devre A\u00e7\u0131k (S\u00fcreklilik Yok)<\/td><td>Devre Kapal\u0131 (S\u00fcreklilik)<\/td><\/tr><tr><td>Tetikleyici Eylem<\/td><td>Devreyi kapat\u0131r (\u201cTemas kurar\u201d)<\/td><td>Devreyi a\u00e7ar (\u201cKonta\u011f\u0131 keser\u201d)<\/td><\/tr><tr><td>Elektriksel Sembol<\/td><td>\u0130ki \u00e7izgi\/daire aras\u0131ndaki bo\u015fluk<\/td><td>\u0130ki noktay\u0131 birle\u015ftiren \u00e7apraz bir \u00e7izgi<\/td><\/tr><tr><td>G\u00fc\u00e7 T\u00fcketimi<\/td><td>Yaln\u0131zca aktif oldu\u011funda g\u00fc\u00e7 t\u00fcketir<\/td><td>\u201cA\u00e7\u0131k\u201d kalmak i\u00e7in g\u00fc\u00e7 t\u00fcketir (r\u00f6le kullan\u0131l\u0131yorsa)<\/td><\/tr><tr><td>Ar\u0131za Durumu Sinyali<\/td><td>G\u00fc\u00e7 kayb\u0131 A\u00e7\u0131k durum ile sonu\u00e7lan\u0131r<\/td><td>G\u00fc\u00e7 kayb\u0131 Kapal\u0131 durum ile sonu\u00e7lan\u0131r<\/td><\/tr><tr><td>Birincil Kullan\u0131m<\/td><td>Ba\u015flat\/\u00c7al\u0131\u015ft\u0131r sinyalleri, genel mant\u0131k<\/td><td>G\u00fcvenlik durdurmalar\u0131, limit alg\u0131lama, alarmlar<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>Make ve Break terimleri end\u00fcstriyel kataloglarda s\u0131kl\u0131kla kullan\u0131l\u0131r. Yabanc\u0131 \u00fcreticilerden belirli bir par\u00e7a numaras\u0131 sipari\u015f ederken, bu standart isimlendirmeleri bilmek gerekir. NO konta\u011f\u0131 genellikle \u201cForm A\u201d konta\u011f\u0131 olarak adland\u0131r\u0131l\u0131r ve NC konta\u011f\u0131 \u201cForm B\u201d konta\u011f\u0131 olarak adland\u0131r\u0131l\u0131r.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Temel Anahtarlar\u0131n \u00d6tesinde: SPDT ve DPDT Mant\u0131\u011f\u0131n\u0131 Anlamak<\/h2>\n\n\n\n<p>Bir\u00e7ok geli\u015fmi\u015f uygulamada, basit bir iki terminalli NO veya NC anahtar\u0131 yeterli de\u011fildir. S\u0131kl\u0131kla bu iki durumdan birini ayn\u0131 anda idare edebilen bile\u015fenlerle veya birden fazla devreyi idare edebilen bile\u015fenlerle kar\u015f\u0131la\u015f\u0131r\u0131z. Burada \u201cKutup\u201d ve \u201cAtma\u201d terminolojisi ile u\u011fra\u015fmak zorunday\u0131z.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>SPDT<\/strong><strong> (<\/strong><strong>Tek Kutuplu \u00c7ift At\u0131\u015fl\u0131<\/strong><strong>):<\/strong> Bu bile\u015fenin bir ortak (COM) terminali ve iki \u00e7\u0131k\u0131\u015f terminali vard\u0131r: bir NO ve bir NC. Bir \u201cde\u011fi\u015ftirme\u201d anahtar\u0131 olarak i\u015flev g\u00f6r\u00fcr. Anahtar a\u00e7\u0131kken COM NC terminaline ba\u011flan\u0131r. Tetiklendi\u011finde, COM NO taraf\u0131na ge\u00e7er. Bu, en iyi durum g\u00f6stergeleri ile kullan\u0131labilir (\u00f6rne\u011fin, \u201c\u00c7al\u0131\u015f\u0131yor\u201d u g\u00f6stermek i\u00e7in ye\u015fil bir \u0131\u015f\u0131k ve \u201cDurdu\u201d yu g\u00f6stermek i\u00e7in k\u0131rm\u0131z\u0131 bir \u0131\u015f\u0131k).<\/li>\n\n\n\n<li><strong>DPDT (\u00c7ift Kutuplu \u00c7ift At\u0131\u015fl\u0131):<\/strong> \u0130ki SPDT anahtar\u0131n\u0131n birbirine yap\u0131\u015ft\u0131r\u0131ld\u0131\u011f\u0131n\u0131 ve tek bir tetikleyici taraf\u0131ndan \u00e7al\u0131\u015ft\u0131r\u0131ld\u0131\u011f\u0131n\u0131 d\u00fc\u015f\u00fcn\u00fcn. Bu, her biri kendi NO ve NC \u00e7\u0131k\u0131\u015flar\u0131na sahip iki ba\u011f\u0131ms\u0131z devreyi (kutup) ayn\u0131 anda \u00e7al\u0131\u015ft\u0131rman\u0131za olanak tan\u0131r.<\/li>\n<\/ul>\n\n\n\n<p>Se\u00e7ti\u011finiz anahtar tipi (SPDT veya DPDT) y\u00fcksek kaliteli end\u00fcstriyel r\u00f6lelerde standartt\u0131r. M\u00fchendislerin ekstra bile\u015fenler olmadan karma\u015f\u0131k kilitleme mant\u0131klar\u0131 olu\u015fturmas\u0131n\u0131 sa\u011flar ve kontrol panelinde \u00e7ok fazla yer tasarrufu sa\u011flar.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Ar\u0131za G\u00fcvenli\u011fi Mant\u0131\u011f\u0131: G\u00fcvenlik Devreleri Neden NC'ye \u00d6ncelik Verir?<\/h2>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"1024\" height=\"768\" src=\"https:\/\/www.omch.com\/wp-content\/uploads\/2026\/01\/normally-open-vs-normally-closed1.webp\" alt=\"normalde a\u00e7\u0131k vs normalde kapal\u0131\" class=\"wp-image-9734\" srcset=\"https:\/\/www.omch.com\/wp-content\/uploads\/2026\/01\/normally-open-vs-normally-closed1.webp 1024w, https:\/\/www.omch.com\/wp-content\/uploads\/2026\/01\/normally-open-vs-normally-closed1-300x225.webp 300w, https:\/\/www.omch.com\/wp-content\/uploads\/2026\/01\/normally-open-vs-normally-closed1-768x576.webp 768w, https:\/\/www.omch.com\/wp-content\/uploads\/2026\/01\/normally-open-vs-normally-closed1-16x12.webp 16w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p>Muhtemelen bu k\u0131lavuzun g\u00fcvenlik sistemleriyle ilgili en \u00f6nemli k\u0131sm\u0131 budur. M\u00fchendislikte \u201cAr\u0131za Emniyetli\u201d tasar\u0131m, bir bile\u015fenin (g\u00fc\u00e7 kayna\u011f\u0131 veya kablolaman\u0131n kendisi) ar\u0131zaland\u0131\u011f\u0131 durumlarda sistemin zarif bir \u015fekilde tehlikeli olmayan bir duruma ge\u00e7ebilecek \u015fekilde tasarland\u0131\u011f\u0131 bir tasar\u0131md\u0131r.<\/p>\n\n\n\n<p><strong>NC neden g\u00fcvenlik konusunda alt\u0131n standartt\u0131r?<\/strong> Temel prensip \u201cTel Kopmas\u0131 \u0130zleme \u201ddir. Bir Acil Durdurma (E-Stop) d\u00fc\u011fmesi d\u00fc\u015f\u00fcn\u00fcn. E-Stop i\u00e7in Normalde A\u00e7\u0131k (NO) bir kontak kullan\u0131rsan\u0131z, devre yaln\u0131zca d\u00fc\u011fmeye bas\u0131ld\u0131\u011f\u0131nda bir \u201cDurdur\u201d sinyali g\u00f6nderir. Ancak, E-Stop devresindeki bir kablo yanl\u0131\u015fl\u0131kla kesildi\u011finde, titre\u015fti\u011finde veya bir kemirgen taraf\u0131ndan \u00e7i\u011fnendi\u011finde ne olur? NO kurulumundaki kontrol\u00f6r a\u00e7\u0131k devreyi yorumlayacak ve her \u015feyin \u201cNormal\u201d oldu\u011funa inanacakt\u0131r. Bir i\u015f\u00e7i acil durum s\u0131ras\u0131nda d\u00fc\u011fmeye bast\u0131\u011f\u0131nda, sinyal yolu zaten yok olmu\u015ftur ve makine durmaz. Bu bir \u201cTehlike Ar\u0131zas\u0131\u201d senaryosudur.<\/p>\n\n\n\n<p>Tersine, e\u011fer bir <strong>normalde kapal\u0131 anahtar<\/strong> E-Stop i\u00e7in devre, kontrol \u00fcnitesine s\u00fcrekli bir \u201cG\u00fcvenli\u201d sinyali g\u00f6ndererek b\u00fct\u00fcnl\u00fc\u011f\u00fcn\u00fc s\u00fcrekli olarak \u201ckan\u0131tlar\u201d. E\u011fer bir kablo koparsa, elektrik ak\u0131\u015f\u0131 derhal durur. Bu s\u00fcreklilik kayb\u0131 kontrol\u00f6r taraf\u0131ndan bir \u201cDurdur\u201d komutu olarak alg\u0131lan\u0131r ve acil kapatma tetiklenir. Bu durumda sistem g\u00fcvenli bir duruma ge\u00e7er.<\/p>\n\n\n\n<p><strong>Geli\u015fmi\u015f \u0130\u00e7g\u00f6r\u00fc: K\u0131sa Devre S\u0131n\u0131rlamas\u0131<\/strong> NC a\u00e7\u0131k devreleri tan\u0131mlamada daha iyi olmas\u0131na ra\u011fmen, g\u00fcvenlik tasar\u0131m\u0131 alan\u0131nda ger\u00e7ekten profesyonel olan bir ad\u0131m daha at\u0131lm\u0131\u015ft\u0131r. Normalde kapal\u0131 olan bir anahtar, kablodaki iki telin birbirine \u00e7arpmas\u0131yla (k\u0131sa devre) devre d\u0131\u015f\u0131 b\u0131rak\u0131labilir ve d\u00fc\u011fme b\u0131rak\u0131lsa bile kontrol\u00f6r taraf\u0131ndan kapal\u0131 devre olarak kabul edilir. Y\u00fcksek riskli ortamlarda bununla m\u00fccadele etmek i\u00e7in m\u00fchendisler \u015funlar\u0131 uygular <strong>\u00e7ift kanall\u0131 NC devreleri<\/strong> veya <strong>hat sonu diren\u00e7leri ile izlenen d\u00f6ng\u00fcler<\/strong>. Bu sistemler bir ar\u0131zay\u0131 (k\u0131sa devre veya kesinti) ve modern otomasyonda mevcut olan en g\u00fcvenli durum olan \u201cG\u00fcvenli\u201d olarak adland\u0131r\u0131lan sa\u011fl\u0131kl\u0131 bir durumu ay\u0131rt edebilir.<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p><strong>Profesyonel ipucu: <\/strong>Acil Durdurmalar, I\u015f\u0131k Perdeleri ve A\u015f\u0131r\u0131 Hareket Limit Anahtarlar\u0131 gibi g\u00fcvenlik a\u00e7\u0131s\u0131ndan kritik giri\u015fler i\u00e7in daima NC kontaklar\u0131 kullan\u0131n. NO kontaklar\u0131n\u0131 yaln\u0131zca kritik olmayan \u201cBa\u015flat\u201d veya \u201cBa\u015flat\u201d komutlar\u0131 i\u00e7in kullan\u0131n; burada ba\u015flatma hatas\u0131 bir tehlike de\u011fil, bir s\u0131k\u0131nt\u0131d\u0131r.<\/p>\n<\/blockquote>\n\n\n\n<h2 class=\"wp-block-heading\">Ger\u00e7ek D\u00fcnya Uygulamalar\u0131: Ev Aletlerinden End\u00fcstriyel Sens\u00f6rlere<\/h2>\n\n\n\n<p>Teoriyi anlamak bir \u015feydir, ancak bu sistemlerin arkas\u0131ndaki mant\u0131\u011f\u0131 ger\u00e7ekten kavramak i\u00e7in eylemde g\u00f6rmek \u015fartt\u0131r. Bu kavramlar\u0131n ak\u0131\u015fkanlar dinami\u011fi i\u00e7in de ge\u00e7erli oldu\u011funu unutmamak \u00f6nemlidir; \u00f6rne\u011fin, normalde a\u00e7\u0131k olan vanalar, kapat\u0131lmalar\u0131 i\u00e7in bir kontrol sinyali g\u00f6nderilene kadar ak\u0131\u015fa izin vermek i\u00e7in sulama veya so\u011futma sistemlerinde s\u0131kl\u0131kla kullan\u0131l\u0131r.<\/p>\n\n\n\n<ol start=\"1\" class=\"wp-block-list\">\n<li><strong>T\u00fcketici Elektroni\u011fi<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Buzdolab\u0131 Kapa\u011f\u0131:<\/strong> Bu bir klasik <strong>Normalde Kapal\u0131<\/strong> uygulama. Anahtar kap\u0131n\u0131n kendisi taraf\u0131ndan a\u00e7\u0131k (\u0131\u015f\u0131k kapal\u0131) tutulur. Kap\u0131n\u0131n a\u00e7\u0131lmas\u0131yla bas\u0131n\u00e7 tahliye edilir, \u015falter \u201cNormal\u201d konumdaki kapal\u0131 konumuna geri d\u00f6ner ve \u0131\u015f\u0131k yanar.<\/li>\n\n\n\n<li><strong>Kap\u0131 zili:<\/strong> A <strong>Normalde A\u00e7\u0131k<\/strong> anahtar. Zil sesinin yaln\u0131zca d\u00fc\u011fmeye aktif olarak bas\u0131ld\u0131\u011f\u0131nda duyulmas\u0131 ama\u00e7lanm\u0131\u015ft\u0131r.<\/li>\n<\/ul>\n\n\n\n<ol start=\"2\" class=\"wp-block-list\">\n<li><strong>End\u00fcstriyel Otomasyon<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Yak\u0131nl\u0131k Sens\u00f6rleri:<\/strong> Bunlar bir konvey\u00f6r \u00fczerindeki nesnelerin varl\u0131\u011f\u0131n\u0131 tespit etmek i\u00e7in gereklidir. Bir NO yak\u0131nl\u0131k sens\u00f6r\u00fc, bir nesne alg\u0131lanana kadar herhangi bir sinyal vermez. Bir NC yak\u0131nl\u0131k sens\u00f6r\u00fc sabit bir sinyal verir ve bir nesne alg\u0131land\u0131\u011f\u0131nda kesilir - genellikle bir hattaki bo\u015fluklar\u0131 alg\u0131lamak i\u00e7in kullan\u0131l\u0131r.<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"1024\" height=\"768\" src=\"https:\/\/www.omch.com\/wp-content\/uploads\/2026\/01\/normally-open-vs-normally-closed2.webp\" alt=\"normalde a\u00e7\u0131k vs normalde kapal\u0131\" class=\"wp-image-9735\" srcset=\"https:\/\/www.omch.com\/wp-content\/uploads\/2026\/01\/normally-open-vs-normally-closed2.webp 1024w, https:\/\/www.omch.com\/wp-content\/uploads\/2026\/01\/normally-open-vs-normally-closed2-300x225.webp 300w, https:\/\/www.omch.com\/wp-content\/uploads\/2026\/01\/normally-open-vs-normally-closed2-768x576.webp 768w, https:\/\/www.omch.com\/wp-content\/uploads\/2026\/01\/normally-open-vs-normally-closed2-16x12.webp 16w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>4 Telli Konfig\u00fcrasyonlar:<\/strong> A\u011f\u0131r sanayide, hem end\u00fcktif hem de kapasitif tipler dahil olmak \u00fczere yak\u0131nl\u0131k sens\u00f6rleri s\u0131kl\u0131kla hem NO hem de NC \u00e7\u0131k\u0131\u015flar\u0131 (NO+NC) sa\u011flayan 4 telli konfig\u00fcrasyonlar kullan\u0131r. Bu, m\u00fchendislerin ana mant\u0131\u011f\u0131 d\u00fczenlemek i\u00e7in tek bir sinyale sahip olmalar\u0131n\u0131 ve di\u011ferinin ba\u011f\u0131ms\u0131z bir izleme sistemine veya yedeklilik kontrol\u00fcne sahip olmas\u0131n\u0131 sa\u011flar.<\/li>\n\n\n\n<li><strong>Bas\u0131n\u00e7 Anahtarlar\u0131:<\/strong> Bir hava kompres\u00f6r\u00fcnde, tankta ayarlanan bir bas\u0131nca ula\u015f\u0131lana kadar motorun \u00e7al\u0131\u015fmas\u0131n\u0131 sa\u011flayan bir NC bas\u0131n\u00e7 anahtar\u0131 olan bir bas\u0131n\u00e7 anahtar\u0131 vard\u0131r, bu noktada anahtar a\u00e7\u0131l\u0131r ve motor kapat\u0131l\u0131r.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Aradaki Bo\u015flu\u011fu Kapatmak: Fiziksel Kontaklar ve PLC Mant\u0131\u011f\u0131<\/h2>\n\n\n\n<p>Kablolu r\u00f6lelerden PLC programlamaya ge\u00e7i\u015f yapanlar i\u00e7in ortak bir kafa kar\u0131\u015f\u0131kl\u0131\u011f\u0131 noktas\u0131, fiziksel donan\u0131m ve yaz\u0131l\u0131m talimatlar\u0131 aras\u0131ndaki etkile\u015fimdir.<\/p>\n\n\n\n<p>Bir PLC'de iki temel giri\u015f talimat\u0131n\u0131z vard\u0131r:<\/p>\n\n\n\n<ol start=\"1\" class=\"wp-block-list\">\n<li><strong>XIC (Kapal\u0131ysa \u0130nceleyin):<\/strong> Genellikle bir NO konta\u011f\u0131na benzeyen bir sembol olarak temsil edilir.<\/li>\n\n\n\n<li><strong>XIO (A\u00e7\u0131ksa \u0130ncele):<\/strong> Genellikle NC konta\u011f\u0131na benzeyen bir sembol olarak temsil edilir.<\/li>\n<\/ol>\n\n\n\n<p><strong>\u201c\u00c7ifte Negatif\u201d Tuza\u011f\u0131:<\/strong><\/p>\n\n\n\n<p>Fiziksel bir kablo ba\u011flarsan\u0131z <strong>Normalde Kapal\u0131<\/strong> E-Stop d\u00fc\u011fmesi bir PLC giri\u015fine ba\u011fland\u0131\u011f\u0131nda, d\u00fc\u011fmeye BASILMADI\u011eINDA PLC belle\u011findeki giri\u015f biti \u201c1\u201d (Y\u00fcksek) olacakt\u0131r.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>E\u011fer bir <strong>XIC<\/strong> komutunu kodunuza ekledi\u011finizde, fiziksel temas kapal\u0131 oldu\u011fu i\u00e7in komut \u201cTrue\u201d olacakt\u0131r.<\/li>\n\n\n\n<li>Yeni ba\u015flayanlar\u0131n \u00e7o\u011fu yanl\u0131\u015fl\u0131kla <strong>XIO<\/strong> komutunu kullanabilirsiniz \u00e7\u00fcnk\u00fc d\u00fc\u011fme \u201cNormalde Kapal\u0131\u201d tiptedir. Ancak kapal\u0131 bir kontak \u00fczerinde bir XIO komutu kullan\u0131ld\u0131\u011f\u0131nda, yaz\u0131l\u0131m mant\u0131\u011f\u0131nda \u201cYanl\u0131\u015f\u201d durumuyla sonu\u00e7lan\u0131r.<\/li>\n<\/ul>\n\n\n\n<p>Esasen, PLC komutunun terminalin durumuna \u201cbakt\u0131\u011f\u0131n\u0131\u201d unutmamal\u0131s\u0131n\u0131z. G\u00fcvenlik i\u00e7in fiziksel bir NC anahtar\u0131 kullan\u0131l\u0131yorsa, PLC kodu genellikle \u201cvoltaj varl\u0131\u011f\u0131n\u0131\u201d \u201cG\u00fcvenli\u201d ko\u015ful olarak de\u011ferlendirmelidir.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Se\u00e7im Kriterleri: Do\u011fru Konfig\u00fcrasyon Nas\u0131l Se\u00e7ilir<\/h2>\n\n\n\n<p>NO ve NC (veya her ikisi) aras\u0131ndaki karar sadece bir mant\u0131k meselesi de\u011fil, ayn\u0131 zamanda g\u00fcvenilirlik, g\u00fc\u00e7 t\u00fcketimi ve sistem beyninin zamanla m\u00fckemmel bir \u015fekilde \u00e7al\u0131\u015fmas\u0131n\u0131 sa\u011flayacak uygun orta\u011f\u0131 bulmakt\u0131r. Bile\u015fen se\u00e7erken dikkat edilmesi gereken teknik fakt\u00f6rler, \u00fcreticinin altyap\u0131s\u0131na ek olarak a\u015fa\u011f\u0131daki fakt\u00f6rleri i\u00e7erir:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>G\u00fcvenlik<\/strong><strong> ve \u00d6nce Uyum<\/strong>: Bir bile\u015fen ar\u0131zas\u0131n\u0131n tehlikeye yol a\u00e7abilece\u011fi durumlarda, kablo kopmalar\u0131n\u0131n izlenmesinde NC'ye \u00f6ncelik verilmelidir. Bu g\u00fcvenli\u011fi sa\u011flamak i\u00e7in, a\u015fa\u011f\u0131daki gibi uluslararas\u0131 standartlara sahip bile\u015fenlerin tedarik edilmesi \u00f6nemlidir <strong>IEC<\/strong> Standartlar, <strong>CCC, CE ve RoHS<\/strong> standartlar\u0131. gibi k\u00f6kl\u00fc bir \u00fcretici ile ortakl\u0131k kurmak <strong>OMCH<\/strong> (1986 y\u0131l\u0131nda kurulmu\u015ftur), bu sertifikalar\u0131n onlarca y\u0131ll\u0131k Ar-Ge ve 100'den fazla \u00fclkede 72.000'den fazla m\u00fc\u015fteriye hizmet veren k\u00fcresel bir ayak izi ile desteklenmesini sa\u011flar.<\/li>\n\n\n\n<li><strong>Optimize Etme <\/strong><strong>G\u00f6rev D\u00f6ng\u00fcs\u00fc<\/strong><strong> ve Ya\u015fam S\u00fcresi<\/strong>: Bir anahtar zaman\u0131n 99%'sinde etkin olmad\u0131\u011f\u0131nda, r\u00f6le bobinlerinin s\u00fcrekli olarak enerjilenmesini \u00f6nlemek i\u00e7in genellikle bir NO yap\u0131land\u0131rmas\u0131 tercih edilir, bu da \u0131s\u0131y\u0131 azalt\u0131r ve cihaz \u00f6mr\u00fcn\u00fc uzat\u0131r. Bu t\u00fcr bir do\u011frulu\u011fa ula\u015fmak i\u00e7in m\u00fchendisler, a\u015fa\u011f\u0131daki gibi geni\u015f bir portf\u00f6ye sahip olmal\u0131d\u0131r <strong>3.000'den fazla SKU<\/strong> OMCH'de mevcut, makinelerinin g\u00f6rev d\u00f6ng\u00fcs\u00fcne tam elektriksel e\u015fle\u015fmeyi bulmak i\u00e7in.<\/li>\n\n\n\n<li><strong>\u00c7evresel<\/strong><strong> D\u00fcr\u00fcstl\u00fck ve Kalite Kontrol<\/strong>: End\u00fcstriyel sens\u00f6rler y\u00fcksek titre\u015fim veya neme maruz kald\u0131klar\u0131nda bile \u201cNormal\u201d durumlar\u0131nda kalabilmelidir, bu da IP67 gibi y\u00fcksek IP dereceleri gerektirir. Bu tutarl\u0131l\u0131\u011f\u0131 sa\u011flamak i\u00e7in, bir \u00fcretici <strong>ISO9001<\/strong> kalite sistemlerinin entegre olmas\u0131 ve birden fazla \u00fcretim hatt\u0131na sahip olmas\u0131 (OMCH'nin 7 \u00fcretim hatt\u0131 vard\u0131r), end\u00fcktif ve fotoelektrik dahil olmak \u00fczere t\u00fcm sens\u00f6rlerin ayn\u0131 y\u00fcksek kalitede olmas\u0131n\u0131 garanti edebilmelidir.<\/li>\n\n\n\n<li><strong>Ekosistem<\/strong><strong>Uyumluluk<\/strong><strong> (Tek Noktadan Tedarik)<\/strong>: Bir ekosistem bir dizi ba\u011f\u0131ms\u0131z bile\u015fen de\u011fil, ar\u0131za emniyetli bir sistemdir. En y\u00fcksek d\u00fczeyde g\u00fcvenilirlik sa\u011flamak i\u00e7in sens\u00f6rler (yak\u0131nl\u0131k\/\u0131\u015f\u0131k perdeleri), kontrol elemanlar\u0131 (r\u00f6leler\/saya\u00e7lar), g\u00fc\u00e7 kaynaklar\u0131 (DIN Ray) ve koruyucu ekipman (devre kesiciler) etkile\u015fim i\u00e7inde olacak \u015fekilde tasarlanmal\u0131d\u0131r. Tam bir sat\u0131c\u0131 kullanmak, t\u00fcm kontrol d\u00f6ng\u00fcs\u00fcn\u00fcn sorunsuz bir \u015fekilde ak\u0131\u015f\u0131n\u0131 garanti edebilir.<\/li>\n<\/ul>\n\n\n\n<p>Son olarak, NO\/NC eyaletleriniz sahip olduklar\u0131 destek kadar g\u00fcvenilirdir. <strong>Bir y\u0131ll\u0131k garanti ve 7\/24 teknik m\u00fcdahale<\/strong> \u201cNormal\u201d durumunuzun makinenin \u00f6mr\u00fc boyunca normal olaca\u011f\u0131n\u0131 garanti eden bir \u00e7\u00f6z\u00fcmd\u00fcr.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Sorun Giderme K\u0131lavuzu: Kontaklar\u0131n Multimetre ile Test Edilmesi<\/h2>\n\n\n\n<p>Bir anahtar eninde sonunda k\u0131r\u0131lacak veya bir etiket eninde sonunda a\u015f\u0131nacakt\u0131r. Sahada NO ve NC kontaklar\u0131n\u0131 h\u0131zl\u0131 bir \u015fekilde tan\u0131ma becerisi, her teknisyenin sahip olmas\u0131 gereken bir beceridir.<\/p>\n\n\n\n<p><strong>Ad\u0131m 1: <\/strong><strong>G\u00fcvenlik<\/strong><strong> Birinci<\/strong><\/p>\n\n\n\n<p>Devrenin enerjisiz oldu\u011fundan emin olun. Multimetrenize zarar verebilece\u011finden ve sizin i\u00e7in g\u00fcvenlik riski olu\u015fturabilece\u011finden, asla canl\u0131 bir devre \u00fczerinde s\u00fcreklilik testi yapmay\u0131n.<\/p>\n\n\n\n<p><strong>Ad\u0131m 2: Multimetreyi Ayarlay\u0131n<\/strong><\/p>\n\n\n\n<p>Dijital multimetrenizi (DMM) S\u00fcreklilik ayar\u0131na getirin (genellikle bir ses dalgas\u0131 veya diyot sembol\u00fc ile g\u00f6sterilir). \u00d6l\u00e7\u00fcm cihaz\u0131 bu s\u00fcreklilik moduna ayarland\u0131\u011f\u0131nda, bir elektrik yolunun tamamlan\u0131p tamamlanmad\u0131\u011f\u0131na dair h\u0131zl\u0131 bir sesli onay sa\u011flar. \u0130ki probu birbirine dokundurun; kapal\u0131 bir yol oldu\u011funu g\u00f6steren s\u00fcrekli bir \u201cbip\u201d sesi duymal\u0131s\u0131n\u0131z.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"768\" src=\"https:\/\/www.omch.com\/wp-content\/uploads\/2026\/01\/normally-open-vs-normally-closed3.webp\" alt=\"normalde a\u00e7\u0131k vs normalde kapal\u0131\" class=\"wp-image-9736\" srcset=\"https:\/\/www.omch.com\/wp-content\/uploads\/2026\/01\/normally-open-vs-normally-closed3.webp 1024w, https:\/\/www.omch.com\/wp-content\/uploads\/2026\/01\/normally-open-vs-normally-closed3-300x225.webp 300w, https:\/\/www.omch.com\/wp-content\/uploads\/2026\/01\/normally-open-vs-normally-closed3-768x576.webp 768w, https:\/\/www.omch.com\/wp-content\/uploads\/2026\/01\/normally-open-vs-normally-closed3-16x12.webp 16w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p><strong>Ad\u0131m 3: Dinlenme Durumunu Test Edin<\/strong><\/p>\n\n\n\n<p>Problar\u0131 anahtar veya sens\u00f6r dururken terminallerine ba\u011flay\u0131n.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Bip sesi \u00e7\u0131karsa:<\/strong> Bir tane bulmu\u015fsun. <strong>Normalde Kapal\u0131 (NC)<\/strong> \u0130leti\u015fim.<\/li>\n\n\n\n<li><strong>Sessiz kal\u0131rsa:<\/strong> Bir tane bulmu\u015fsun. <strong>Normalde A\u00e7\u0131k (NO)<\/strong> \u0130leti\u015fim.<\/li>\n<\/ul>\n\n\n\n<p><strong>Ad\u0131m 4: Tetiklenmi\u015f Durumu Test Edin<\/strong><\/p>\n\n\n\n<p>Problar ba\u011fland\u0131\u011f\u0131nda, anahtara manuel olarak bas\u0131n (d\u00fc\u011fmeye bas\u0131n, limiti tetikleyin veya sens\u00f6r\u00fcn \u00f6n\u00fcne bir nesne yerle\u015ftirin).<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>NO konta\u011f\u0131 \u015fimdi <strong>Bip<\/strong>.<\/li>\n\n\n\n<li>NC irtibat ki\u015fisi \u015fimdi <strong>Sessiz ol<\/strong>.<\/li>\n<\/ul>\n\n\n\n<p><strong>Ad\u0131m 5: Y\u00fcksek Direnci Kontrol Edin<\/strong><\/p>\n\n\n\n<p>Bip sesi al\u0131yorsan\u0131z ancak ekranda y\u00fcksek diren\u00e7 (birka\u00e7 ohm'dan fazla) g\u00f6r\u00fcn\u00fcyorsa, kontaklar \u00e7ukurla\u015fm\u0131\u015f veya oksitlenmi\u015f olabilir. Bu, end\u00fcstriyel ortamlarda yayg\u0131n bir ar\u0131za modudur ve aral\u0131kl\u0131 mant\u0131k hatalar\u0131n\u0131 \u00f6nlemek i\u00e7in bile\u015fen de\u011fi\u015ftirilmelidir.<\/p>\n\n\n\n<p>Normalde A\u00e7\u0131k ve Normalde Kapal\u0131 mant\u0131k aras\u0131ndaki dengede ustala\u015farak, sadece kablolar\u0131 ba\u011flamakla kalmaz, modern end\u00fcstriyel d\u00fcnyan\u0131n g\u00fcvenilirli\u011fini ve g\u00fcvenli\u011fini tasarlars\u0131n\u0131z. \u0130ster y\u00fcksek hassasiyetli bir end\u00fcstriyel sens\u00f6r\u00fc entegre ediyor ister bir ana E-Stop'u kabloluyor olun, her zaman <strong>\u201cFail-Safe\u201d<\/strong> sisteminizin herhangi bir ar\u0131za durumunda hem ekipman\u0131 hem de personeli korumas\u0131n\u0131 sa\u011flamak i\u00e7in ak\u0131lda tutulmal\u0131d\u0131r.<\/p>\n\n\n\n<p><\/p>","protected":false},"excerpt":{"rendered":"<p>Elektrik m\u00fchendisli\u011fi ve end\u00fcstriyel otomasyon d\u00fcnyas\u0131nda her \u015fey ikili bir se\u00e7ime dayan\u0131r: devre a\u00e7\u0131k m\u0131, kapal\u0131 m\u0131? Bu kula\u011fa kolay gelebilir, ancak sorunsuz \u00e7al\u0131\u015fan bir fabrika ile feci bir g\u00fcvenlik ar\u0131zas\u0131 aras\u0131ndaki fark\u0131 yaratan \u015fey, oraya ula\u015fman\u0131n ard\u0131ndaki mant\u0131kt\u0131r ve makine ar\u0131zaland\u0131\u011f\u0131nda ne olaca\u011f\u0131d\u0131r.<\/p>","protected":false},"author":4,"featured_media":9733,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_seopress_robots_primary_cat":"none","_seopress_titles_title":"Normally Open vs Normally Closed: What You Need to Know","_seopress_titles_desc":"Discover the key differences in our blog on normally open vs normally closed. Understand how each type functions and their applications in various systems.","_seopress_robots_index":"","footnotes":""},"categories":[46],"tags":[],"class_list":["post-9738","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-industrial-control"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.omch.com\/tr\/wp-json\/wp\/v2\/posts\/9738","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.omch.com\/tr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.omch.com\/tr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.omch.com\/tr\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/www.omch.com\/tr\/wp-json\/wp\/v2\/comments?post=9738"}],"version-history":[{"count":1,"href":"https:\/\/www.omch.com\/tr\/wp-json\/wp\/v2\/posts\/9738\/revisions"}],"predecessor-version":[{"id":9741,"href":"https:\/\/www.omch.com\/tr\/wp-json\/wp\/v2\/posts\/9738\/revisions\/9741"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.omch.com\/tr\/wp-json\/wp\/v2\/media\/9733"}],"wp:attachment":[{"href":"https:\/\/www.omch.com\/tr\/wp-json\/wp\/v2\/media?parent=9738"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.omch.com\/tr\/wp-json\/wp\/v2\/categories?post=9738"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.omch.com\/tr\/wp-json\/wp\/v2\/tags?post=9738"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}