
{"id":233,"date":"2019-10-06T15:32:24","date_gmt":"2019-10-06T12:32:24","guid":{"rendered":"http:\/\/blog.phoenixcontact.com\/marketing-tr\/?p=233"},"modified":"2019-11-03T15:21:12","modified_gmt":"2019-11-03T12:21:12","slug":"kendinden-guvenli-devrelerin-tasarlanmasi","status":"publish","type":"post","link":"https:\/\/blog.phoenixcontact.com\/marketing-tr\/2019\/10\/06\/kendinden-guvenli-devrelerin-tasarlanmasi\/","title":{"rendered":"Kendinden G\u00fcvenli Devrelerin Tasarlanmas\u0131"},"content":{"rendered":"<p>Kendinden g\u00fcvenli (Ex i) koruma t\u00fcr\u00fc, potansiyel olarak patlay\u0131c\u0131 b\u00f6lgeye sahip sistemlerde, \u00f6l\u00e7me ve kontrol teknolojisi alan\u0131nda d\u00fcnya \u00e7ap\u0131nda kendini kan\u0131tlam\u0131\u015ft\u0131r. Birincisi, kurulum a\u00e7\u0131s\u0131ndan di\u011fer koruma t\u00fcrlerine k\u0131yasla \u00e7ok daha uygun maliyetlidir. Di\u011feri, bak\u0131m \u00e7al\u0131\u015fmalar\u0131 ve operasyon s\u0131ras\u0131nda de\u011fi\u015fikliklere izin verir. Ayr\u0131ca, basit bir elektrik ekipman\u0131n\u0131 \u00f6zel onay almadan kullanmak da m\u00fcmk\u00fcnd\u00fcr.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-221\" src=\"http:\/\/blog.phoenixcontact.com\/marketing-tr\/wp-content\/uploads\/sites\/21\/2019\/10\/3.jpg\" alt=\"\" width=\"439\" height=\"343\" \/><\/p>\n<p><!--more Yaz\u0131n\u0131n devam\u0131 i\u00e7in t\u0131klay\u0131n\u0131z--><\/p>\n<p>Ex i koruma tipinin arkas\u0131ndaki prensip, potansiyel olarak patlay\u0131c\u0131 b\u00f6lgeye aktar\u0131lan ve orada depolanabilecek enerjiyi s\u0131n\u0131rlamaya dayan\u0131r. Bu, herhangi bir k\u0131v\u0131lc\u0131mdan a\u00e7\u0131\u011fa \u00e7\u0131kan enerjinin her zaman etraftaki potansiyel patlay\u0131c\u0131 atmosferin asgari tutu\u015fma enerjisinden daha az oldu\u011fu anlam\u0131na gelir.<\/p>\n<ul>\n<li>Ii\u00a0 =\u00a0\u00a0 Max. permissible input current<\/li>\n<li>Pi\u00a0 =\u00a0 Max. permissible input power<\/li>\n<li>Ci= Max. internalcapacitance<\/li>\n<li>Li\u00a0\u00a0\u00a0 = \u00a0Max. internalinductance<\/li>\n<li>Lc= Max. cable\/line inductance<\/li>\n<li>Io=\u00a0 Max. output current<\/li>\n<li>Po= Max. outputpower<\/li>\n<li>Co= Max. (connectable) external capacitance<\/li>\n<li>Lo= Max. (connectable) externalinductance<\/li>\n<\/ul>\n<p>Ayr\u0131ca elektronik bile\u015fenler gibi tutu\u015fmaya neden olabilecek s\u0131cak y\u00fczeylerin olu\u015fumunu engeller. Di\u011fer t\u00fcm koruma t\u00fcrlerininaksine, Exi, yaln\u0131zca tek bir ekipmana de\u011fil, EN\/IEC 60079-11\u2019e uygun olarak t\u00fcm kendinden g\u00fcvenli devreye de at\u0131fta bulunur.<\/p>\n<p><strong>Ex i izolat\u00f6rlerin \u00f6zel anlam\u0131<\/strong><\/p>\n<p>Kendinden g\u00fcvenli devreler genellikle a\u015fa\u011f\u0131daki elemanlardan olu\u015fur:<\/p>\n<ul>\n<li>Kendinden g\u00fcvenli donan\u0131m, yani Ex i b\u00f6lgesine (\u00f6rne\u011fin bir Ex i s\u0131cakl\u0131k vericisi) monte edilmi\u015f bir t\u00fcketici<\/li>\n<li>Ex i b\u00f6lgede olmayan bir kayna\u011f\u0131 i\u00e7eren ili\u015fkili ekipman (Ex iizolat\u00f6r\u00fc)<\/li>\n<li>Ba\u011flant\u0131 kablosu<\/li>\n<\/ul>\n<p>Ex\u00a0 i\u00a0izolat\u00f6rleri\u00a0 bu\u00a0 noktada\u00a0\u00f6zellikle\u00a0 \u00f6nemlidir.\u00a0 EN\/ IEC 60079-0 ve -11 uyar\u0131nca, kendinden g\u00fcvenli devrelere, kendinden g\u00fcvenli olmayan di\u011fer t\u00fcm devrelerden galvanik olarak g\u00fcvenli izolasyon sa\u011flarlar ve bu nedenle her Ex\u00a0 i\u00a0 MCR devresinde mutlak bir zorunlulukturlar. Dahas\u0131, Ex b\u00f6lgesine iletilen enerjiyi, yani maksimum y\u00fcks\u00fcz gerilim Uo, maksimum k\u0131sa devre ak\u0131m\u0131 Io ve maksimum g\u00fc\u00e7 Po\u2019\u0131 uygun seviyeye s\u0131n\u0131rland\u0131r\u0131rlar. Ayn\u0131 zamanda, Co ve Lo arac\u0131l\u0131\u011f\u0131yla, hangi maksimum enerji depolama elemanlar\u0131n\u0131n \u2013 saha cihaz\u0131ndaki konsantre kapasitans Ci ve konsantre end\u00fcktans Li L, hat kapasitanslar\u0131 Ccve hat end\u00fcktanslar\u0131 Lc &#8211; devrenin kendinden g\u00fcvenli\u011fini tehlikeye sokmadan ba\u011flanabilece\u011fini belirlerler.<\/p>\n<p>Exi koruma t\u00fcr\u00fcn\u00fcn bir di\u011fer \u00f6nemli y\u00f6n\u00fc, belirli hatalar\u0131n ortaya \u00e7\u0131kaca\u011f\u0131 varsay\u0131m\u0131 alt\u0131nda enerji s\u0131n\u0131rlamas\u0131n\u0131n g\u00fcvenilirli\u011fidir. Bu nedenle, kendinden g\u00fcvenli elektrik ekipman\u0131 ve ilgili ekipman\u0131n Ex i ile ili\u015fkili anahtarlama k\u0131s\u0131mlar\u0131, gerekli g\u00fcvenilirli\u011fe g\u00f6re tasarlan\u0131r ve s\u0131rayla Ex b\u00f6lgesindeki farkl\u0131 b\u00f6lgelerle ayn\u0131 hizada olan farkl\u0131 koruma seviyelerine ayr\u0131l\u0131r. Ex ia koruma seviyesi (\u00e7ift hata tolerans\u0131) Zone 0\u2019da (ve bu nedenle de Zone 1 ve 2\u2019de), Ex ib koruma seviyesi (tek hata tolerans\u0131) Zone 1\u2019de, (ve bu nedenle, Zone 2\u2019de de) ve Ex ic koruma seviyesi (s\u0131f\u0131r hata tolerans\u0131) yaln\u0131zca Zone 2\u2019de kullan\u0131m i\u00e7in uygundur.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-234\" src=\"http:\/\/blog.phoenixcontact.com\/marketing-tr\/wp-content\/uploads\/sites\/21\/2019\/10\/1.jpg\" alt=\"\" width=\"1600\" height=\"1081\" srcset=\"https:\/\/blog.phoenixcontact.com\/marketing-tr\/wp-content\/uploads\/sites\/21\/2019\/10\/1.jpg 1600w, https:\/\/blog.phoenixcontact.com\/marketing-tr\/wp-content\/uploads\/sites\/21\/2019\/10\/1-300x203.jpg 300w, https:\/\/blog.phoenixcontact.com\/marketing-tr\/wp-content\/uploads\/sites\/21\/2019\/10\/1-768x519.jpg 768w, https:\/\/blog.phoenixcontact.com\/marketing-tr\/wp-content\/uploads\/sites\/21\/2019\/10\/1-1024x692.jpg 1024w, https:\/\/blog.phoenixcontact.com\/marketing-tr\/wp-content\/uploads\/sites\/21\/2019\/10\/1-624x422.jpg 624w\" sizes=\"auto, (max-width: 1600px) 100vw, 1600px\" \/><\/p>\n<p><em><strong>Resim 1: Kendinden g\u00fcvenli bir devrenin parametre ve kriterleri.<\/strong><\/em><\/p>\n<h3><strong>Farkl\u0131 \u00fcreticilerin Ex i saha cihazlar\u0131 ve izolat\u00f6rlerini Kombine Etmek<\/strong><\/h3>\n<p>\u0130lgili ba\u011flant\u0131n\u0131n k\u0131v\u0131lc\u0131m ve s\u0131cak y\u00fczey \u00fcretmemesini sa\u011flamak i\u00e7in, kullan\u0131c\u0131 veya sistem operat\u00f6r\u00fc, \u201ckendinden g\u00fcvenlik kan\u0131t\u0131\u201d g\u00f6stermeli ve belgelendirmelidir. Bu, ATEX Direktifi RL 1999\/92\/EC ve BetrSichV\u2019de\u00a0 veya\u00a0 BetrSichV\u2019deya da Yeni GefStoffV ve elektriksel patlama korumas\u0131 i\u00e7in standardizasyon \u015fartlar\u0131nda tan\u0131mlanm\u0131\u015ft\u0131r. Bu proses kullan\u0131c\u0131ya farkl\u0131 gereksinimler do\u011frultusunda Exi saha cihazlar\u0131 ve izolat\u00f6rleri se\u00e7ip kombine edebilme avantaj\u0131 sunar.<\/p>\n<p>Resim 1, do\u011frusal veya omik bir kaynak karakteristik e\u011frisine sahip ili\u015fkili ekipmandan (kaynak), kendinden g\u00fcvenli bir ekipmandan ve ba\u011flant\u0131 kablolar\u0131ndan \u00a0olu\u015fan mavi ile i\u015faretlenmi\u015f kendinden g\u00fcvenli bir devreyi g\u00f6sterir. \u015eekil ayr\u0131ca, kendinden g\u00fcvenli\u011fi sa\u011flamak i\u00e7in gerekli olan g\u00fcvenlik teknolojisi parametrelerini ve ayr\u0131ca devrenin ger\u00e7ekten g\u00fcvenli olmas\u0131n\u0131 sa\u011flamak i\u00e7in yerine getirilmesi gereken kriterleri g\u00f6sterir. Parametreler AB muayene sertifikalar\u0131nda ve kullan\u0131m k\u0131lavuzlar\u0131nda veya veri sayfalar\u0131nda bulunabilir.<\/p>\n<p>Mevcut DINEN60079-11 ve DINEN60079-14 standard\u0131n\u0131n (VDE 0165-1) g\u00fcncel versiyonlar\u0131na g\u00f6re, y\u00fczde 50 kural\u0131n\u0131n kullan\u0131l\u0131p kullan\u0131lmayaca\u011f\u0131n\u0131 belirlemek i\u00e7in bir de\u011ferlendirme yap\u0131lmal\u0131d\u0131r. Bunun nedeni, ilgili ekipman\u0131n sertifikal\u0131 Co ve Lo de\u011ferlerinin yaln\u0131zca a\u015fa\u011f\u0131daki durumlarda tam olarak kullan\u0131labilmesidir. Konsantre kapasitanslar\u0131(=Ci) ve konsantre end\u00fcktanslar\u0131 olmayan (=Li) basit kendinden g\u00fcvenli devrelerde Li&lt; %1 Lo veya Ci\u2019nin Co\u2019nun. \u00a0 %&lt;1 olmas\u0131 ko\u015fuluyla, konsantre kapasitansl\u0131 ve\/veya konsantre end\u00fcktansl\u0131 karma kendinden g\u00fcvenli bir devrede Li\u2265 %1 Lo ve Ci\u2265 %1 Co ise, onayl\u0131 Co ve Lo de\u011ferleri y\u00fczde 50 azalt\u0131lmal\u0131d\u0131r. Bu durumda, a\u015fa\u011f\u0131dakiler ge\u00e7erlidir.<\/p>\n<p><em><strong>Ci + CC &lt; 0.5 Co Li + LC &lt; 0.5 Lo.<\/strong><\/em><\/p>\n<p>Bu durum i\u00e7in, baz\u0131 durumlarda &#8211; \u00f6rne\u011fin MACX MCR-EX \u00fcr\u00fcn grubunda oldu\u011fu gibi test b\u00f6lgelerinden t\u00fcretilmi\u015f, yar\u0131 de\u011ferden 1.5 kat daha b\u00fcy\u00fck olan Cove Lo de\u011fer \u00e7iftleri vard\u0131r.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-235\" src=\"http:\/\/blog.phoenixcontact.com\/marketing-tr\/wp-content\/uploads\/sites\/21\/2019\/10\/2.jpg\" alt=\"\" width=\"538\" height=\"279\" srcset=\"https:\/\/blog.phoenixcontact.com\/marketing-tr\/wp-content\/uploads\/sites\/21\/2019\/10\/2.jpg 1600w, https:\/\/blog.phoenixcontact.com\/marketing-tr\/wp-content\/uploads\/sites\/21\/2019\/10\/2-300x155.jpg 300w, https:\/\/blog.phoenixcontact.com\/marketing-tr\/wp-content\/uploads\/sites\/21\/2019\/10\/2-768x398.jpg 768w, https:\/\/blog.phoenixcontact.com\/marketing-tr\/wp-content\/uploads\/sites\/21\/2019\/10\/2-1024x531.jpg 1024w, https:\/\/blog.phoenixcontact.com\/marketing-tr\/wp-content\/uploads\/sites\/21\/2019\/10\/2-624x323.jpg 624w\" sizes=\"auto, (max-width: 538px) 100vw, 538px\" \/><\/p>\n<p><em><strong>Resim 2: Kendinden g\u00fcvenli bir \u00f6l\u00e7\u00fc devresi \u00f6rne\u011fi<\/strong><\/em><\/p>\n<h1>Bir s\u0131cakl\u0131k \u00f6l\u00e7\u00fcm devresinin kendinden g\u00fcvenlik kan\u0131t\u0131 \u00f6rne\u011fi<\/h1>\n<p>Proses m\u00fchendisli\u011fi uygulamalar\u0131nda Ex b\u00f6lgesindeki s\u0131cakl\u0131k, bas\u0131n\u00e7, debi, nem veya pH de\u011feri gibi proses de\u011fi\u015fkenleri kendinden g\u00fcvenli \u00f6l\u00e7\u00fcm transd\u00fcserleri (vericiler) ile toplan\u0131r ve 4\u2026 20 mA standart elektrik sinyaline d\u00f6n\u00fc\u015ft\u00fcr\u00fcl\u00fcr. Bunlardan s\u0131cakl\u0131k kesinlikle en s\u0131k \u00f6l\u00e7\u00fclen fiziksel de\u011fi\u015fkenlerden biridir. Bu sebeple, bir\u00a0 hidrojen\/\u00a0 hava kar\u0131\u015f\u0131m\u0131ndan kaynaklanan potansiyel olarak patlay\u0131c\u0131 bir atmosfer i\u00e7in Ex Zone 0\u2019a kadar kendinden g\u00fcvenli bir s\u0131cakl\u0131k \u00f6l\u00e7\u00fcm devresinin kendinden g\u00fcvenli\u011finin nas\u0131l do\u011frulanaca\u011f\u0131n\u0131 g\u00f6steren bir \u00f6rnek sa\u011fl\u0131yoruz. Ex i \u00f6l\u00e7\u00fcm devresi, do\u011frusal bir kaynak karakteristik e\u011frisine sahip aktif ili\u015fkili ekipman \u00f6\u011fesi olarak bir MACX MCR-EX-RPSSI-I tekrarlay\u0131c\u0131 g\u00fc\u00e7 kayna\u011f\u0131 ile iki pasif kendinden emniyetli ekipman \u00f6\u011fesi aras\u0131nda bir ara ba\u011flant\u0131dan olu\u015fur: birFA MCR EX-HT- TS-I-OLP s\u0131cakl\u0131k vericisi ve bir FAMCR-EX-DS- II i\u015flem g\u00f6stergesi (Resim2).<\/p>\n<p>Kendinden g\u00fcvenli\u011fi kan\u0131tlamak i\u00e7in a\u015fa\u011f\u0131daki kriterler yerine getirilmelidir:<\/p>\n<ul>\n<li>Zone 0 i\u00e7in Ex ia koruma seviyeleri ve kategoriler b\u00f6lgelere uygun olmal\u0131d\u0131r. Bu kriter, cihaz\u0131n AB muayene sertifikas\u0131ndaki g\u00f6stergeyle, cihaz\u0131n koruma seviyesini\u00a0<span style=\"font-size: 1rem\">etkilemeden ia koruma seviyesine sahip bir Ex i devresinde kullan\u0131labilece\u011fini g\u00f6steren bildirimle kar\u015f\u0131lanmaktad\u0131r.<\/span><\/li>\n<\/ul>\n<ul>\n<li>Malzeme gruplar\u0131 e\u015fle\u015fir.<\/li>\n<\/ul>\n<p>T\u00fcm Ex i cihazlar\u0131, IIC i\u015faretine uygun olarak bir hidrojen\/ hava kar\u0131\u015f\u0131ml\u0131 Ex atmosferi i\u00e7in onayl\u0131d\u0131r. Ayn\u0131s\u0131, T4 s\u0131cakl\u0131k s\u0131n\u0131f\u0131 i\u00e7in de ge\u00e7erlidir, b\u00f6ylece bu talep de kar\u015f\u0131lanm\u0131\u015ft\u0131r.<\/p>\n<ul>\n<li>Ex i kriterlerini kar\u015f\u0131la\u015ft\u0131ran Resim 1\u2019de listelenen be\u015f kriter kar\u015f\u0131lanm\u0131\u015ft\u0131r.<\/li>\n<\/ul>\n<p>Bu \u00f6nko\u015ful, Resim 2\u2019de g\u00f6sterilen Ex i parametrelerine g\u00f6re kar\u015f\u0131lan\u0131r. Ayr\u0131ca, y\u00fczde 50 kural\u0131n\u0131 kullanmaya gerek olmayan karma bir Exi devresi ile ilgileniyoruz. Sadece proses g\u00f6stergesi 35.1\u00b5H konsantre end\u00fcktansa sahiptir. Bu nedenle, hesaplamalara g\u00f6re, 140 nF\/km\u2019lik \u00f6zel Cc kablo kapasitesi ve 1 nH\/km\u2019lik Lc kablo end\u00fcktans\u0131 ile 750 metrelik, 107 nF Co de\u011ferine sahip kablo m\u00fcmk\u00fcnd\u00fcr 1964.9 metre\u2019lik kablo ise 2 mH Lo de\u011feri ve 35,1 \u00b5H Ci de\u011feri ile m\u00fcmk\u00fcnd\u00fcr. Bu ara ba\u011flant\u0131, bu nedenle 750 metreye kadar kablo uzunlu\u011fu i\u00e7in kendinden g\u00fcvenlidir.<\/p>\n<p>Yukar\u0131da tarif edilen kendinden g\u00fcvenlik kan\u0131t\u0131, kafa tipi transd\u00fcserin saha-yan ba\u011flant\u0131lar\u0131n\u0131n termokupl ve diren\u00e7li s\u0131cakl\u0131k alg\u0131lay\u0131c\u0131 (RTD) ile birbirine ba\u011flanmas\u0131 i\u00e7in ayr\u0131 olarak uygulanmal\u0131d\u0131r.<\/p>\n<h1>Basit elektrik ekipman\u0131<\/h1>\n<p>EN 60079-11\u2019e g\u00f6re termokupllar ve RTD\u2019ler \u201cbasit elektrikli ekipman\u201d olarak kabul edilir. Bu, alternatif olarak, s\u0131cakl\u0131k sens\u00f6rlerinin onays\u0131z da kullan\u0131labilece\u011fi anlam\u0131na gelir. Bununla\u00a0 birlikte\u00a0kullan\u0131c\u0131,\u00a0 termokupllar\u0131n\u00a0 ve\u00a0RTD\u2019lerin\u00a0\u00a0 EN 60079-11\u2019de belirtilen enerji depolama ve \u00fcretim \u015fartnamelerindeki \u00f6zelliklere uymas\u0131n\u0131 sa\u011flamal\u0131d\u0131r. Ayr\u0131ca, kullan\u0131c\u0131, bir s\u0131cakl\u0131k s\u0131n\u0131f\u0131 atamak i\u00e7in cihazlar\u0131n y\u00fczey \u0131s\u0131nma i\u015flemlerini Po de\u011feri \u00fczerinden belirlemelidir.<\/p>\n<h1>\u0130\u015flevsel verilerin ayr\u0131 de\u011ferlendirilmesi<\/h1>\n<p>Cihazlar\u0131 se\u00e7erken, kendinden g\u00fcvenlik kan\u0131t\u0131 ile birlikte i\u015flevsel verilerin boyutland\u0131r\u0131lmas\u0131 dikkate al\u0131nmal\u0131d\u0131r. \u00d6rne\u011fin, MACXMCR-EX-SL-RPSSI-I tekrarlamal\u0131 g\u00fc\u00e7kayna\u011f\u0131, 20 mA\u2019da 16 V besleme gerilimi ile FA MCR EX-HAT-TS-I-OLP s\u0131cakl\u0131k transd\u00fcserini besler. S\u0131cakl\u0131k transd\u00fcseri en az 11 V DC besleme gerilimi gerektirir. FAMCR EX-DS-I-I proses g\u00f6stergesi i\u00e7in &lt;1 V (HART ile &lt;1.9 V) hafif gerilim d\u00fc\u015f\u00fcm\u00fc faydal\u0131d\u0131r, \u00e7\u00fcnk\u00fc Ex i kaynaklar\u0131 i\u00e7in besleme gerilimi Ex i olmayan cihazlardan daha d\u00fc\u015f\u00fckt\u00fcr. Sonu\u00e7 olarak, bir hatla ilgili gerilim d\u00fc\u015f\u00fcm\u00fc i\u00e7in ve bir yedek olarak 3.1V mevcuttur.<\/p>\n<h1>Maksimum esneklik i\u00e7in \u00e7ok say\u0131da onay<\/h1>\n<p>12,4 mm ince MACX MCR Ex gibi yenilik\u00e7i Ex i izolat\u00f6r serisi, ideal olarak koordine edilmi\u015f Io, Uo ve Po de\u011ferleriyle g\u00f6ze \u00e7arpar ve onlar\u0131 \u00e7ok say\u0131da Ex i saha cihaz\u0131 ile uyumlu hale getirir. \u00dcr\u00fcn yelpazesini geli\u015ftirirken, bunun maksimum uygulanabilir kablo uzunlu\u011funu belirlemek i\u00e7in gerekli bir parametre oldu\u011fu g\u00f6z \u00f6n\u00fcne al\u0131nd\u0131\u011f\u0131nda, m\u00fcmk\u00fcn olan en y\u00fcksek Co de\u011ferine de \u00f6nem verilmi\u015ftir (Resim 3).<\/p>\n<p>MACX MCR Ex serisi Ex i izolat\u00f6rleri mevcut ATEX direktifine g\u00f6re 2014\/34\/EU ve Ex II (1) G [Ex ia Ga] IIC ve Ex II (1) ile patlamaya kar\u015f\u0131 koruma standartlar\u0131na uygun olarak onaylanm\u0131\u015ft\u0131r; Ex zone 0 (gaz) ve Ex zone 20\u2019ye (toz) kadar olan Exi devreleri \u00e7in ExII(1)[ExiaGa]IICveExII(1)D[Ex ia Da] II Ex i\u015faretler. Bu nedenle, t\u00fcm malzeme gruplar\u0131 i\u00e7in t\u00fcm Ex b\u00f6lgelerinde kullan\u0131labilirler ve bu da y\u00fcksek esneklik sa\u011flar.<\/p>\n<p>Ayr\u0131ca, Ex n koruma tipine g\u00f6re Ex zone 2\u2019ye MACX cihazlar\u0131 monte edilebilir ve bu sayede da\u011f\u0131t\u0131k otomasyon konseptlerinde kullan\u0131mlar\u0131 kolayla\u015f\u0131r. IECEx, EAC ve UL gibi di\u011fer uluslararas\u0131 onaylar d\u00fcnya \u00e7ap\u0131ndaki uygulamalarda kullan\u0131mlar\u0131 i\u00e7in \u00f6nko\u015fuldur.<\/p>\n<h1>SIL 2 veya SIL 3\u2019e kadar i\u015flevsel g\u00fcvenlik<\/h1>\n<p>Ex sistem yap\u0131s\u0131ndaki bir MCR sinyali koruma kademesininbir par\u00e7as\u0131ysa sistem operat\u00f6r\u00fc, kendinden g\u00fcvenlik kan\u0131t\u0131na ek olarak, s\u00fcreklilik ve kalite bak\u0131m\u0131ndan sinyal iletimi niteli\u011fi ta\u015f\u0131mal\u0131d\u0131r. Bu nedenle MACX MCR-\u2026Ex i izolat\u00f6r serisi ve FA MCR\u2026 proses g\u00f6stergeleri ve saha cihazlar\u0131 EN 61508\u2019e g\u00f6re emniyet odakl\u0131 devrelerde kullan\u0131m i\u00e7in geli\u015ftirilmi\u015ftir. Ba\u011f\u0131ms\u0131z test kurumlar\u0131 bunlar\u0131 SIL 2 veya SIL 3\u2019e kadar uygulamalarda kullan\u0131m i\u00e7in onaylam\u0131\u015ft\u0131r.<\/p>\n<h1>Sadece 12,5 mm\u2019lik geni\u015flik<\/h1>\n<p>Yukar\u0131da a\u00e7\u0131klanan Exi tekrarlamal\u0131 g\u00fc\u00e7 kaynaklar\u0131na ekolarak, portf\u00f6y ayn\u0131 zamanda iki galvanik olarak izole edilmi\u015f 4\u2026 20 mA \u00e7\u0131k\u0131\u015fl\u0131 (sinyal \u00e7oklay\u0131c\u0131) ve iki kanall\u0131 tasar\u0131mda analog giri\u015f sinyalleri i\u00e7in Ex i MACXMCR-EX-SL serisi izolat\u00f6rleri i\u00e7erir. Sinyal \u00e7oklay\u0131c\u0131 durumunda, kullan\u0131c\u0131lar hem her iki4\u2026 20 mA \u00e7\u0131k\u0131\u015f\u0131n HART sinyalini iletti\u011fi ya da ikinci \u00e7\u0131k\u0131\u015f\u0131n HART sinyalini filtreledi\u011fi versiyonlar aras\u0131ndan se\u00e7im yapabilir. Bu, hassasiyeti y\u00fcksek giri\u015fler i\u00e7in \u00f6nemlidir. MCR teknolojisi ile ilgili di\u011fer t\u00fcm sinyalleri i\u015flemek i\u00e7in &#8211; \u00f6rne\u011fin termokupllar, RTD\u2019ler, analog \u00e7\u0131k\u0131\u015f sinyalleri (\u00f6rne\u011fin,oransalvalflerikontrol etmek i\u00e7in), NAMUR sens\u00f6rlerinden gelen ikili giri\u015f sinyalleri veya On\/Off valflerini ve alarm\u0131 \u00e7al\u0131\u015ft\u0131rmak i\u00e7in kontaklar ve ikili \u00e7\u0131k\u0131\u015flar &#8211; Ex i izolat\u00f6rlerinin MACX MCR-EX-SL serisi, Ex i izolat\u00f6rler, sinyal \u00e7oklay\u0131c\u0131lar, \u00f6l\u00e7\u00fcm transd\u00fcserleri ve limit anahtarlar\u0131nda kapsaml\u0131 ve eksiksiz bir fonksiyonel spektrum sunar.<\/p>\n<p>Bu cihazlar, di\u011ferlerinin yan\u0131 s\u0131ra, toplam geni\u015fli\u011fi sadece 12,5 milimetre olan t\u00fcm tek ve iki kanall\u0131 tasar\u0131mlar i\u00e7in idealdir. Bu, kullan\u0131c\u0131lara pazardaki mevcut boyutlara k\u0131yasla y\u00fczde 45 daha fazla alan tasarrufu sa\u011flar. Kompakt tasar\u0131m, patentli bir d\u00f6n\u00fc\u015ft\u00fcr\u00fcc\u00fc ve d\u00fc\u015f\u00fck g\u00fc\u00e7 t\u00fcketimli devre tasar\u0131m\u0131 sayesinde m\u00fcmk\u00fcn olur. Ayn\u0131 zamanda, devre tasar\u0131m\u0131nda elektrolitik kapasit\u00f6rlerin bulunmamas\u0131, nihai de\u011ferin tipik olarak y\u00fczde 0.05\u2019i kadar tutarl\u0131 bir iletim do\u011frulu\u011fu ile daha uzun bir servis \u00f6mr\u00fcne katk\u0131da bulunur.<\/p>\n<h1>Geni\u015fletilmi\u015f diyagnostik i\u015flevlerine sahip d\u00f6ng\u00fc beslemeli s\u0131cakl\u0131k vericileri<\/h1>\n<p>S\u00fcrekli geni\u015fleyen Field Analog \u00fcr\u00fcn yelpazesi ile Phoenix Contact, s\u0131cakl\u0131k sens\u00f6rleri i\u00e7in vericiler ve proses g\u00f6stergeleri gibi saha cihazlar\u0131 da sa\u011fl\u0131yor. Yeni d\u00f6ng\u00fc beslemeli s\u0131cakl\u0131k vericileri, iki termokuplu veya RTD\u2019yi i\u015flemek ve onlar\u0131 \u00f6l\u00e7eklendirilebilir bir 4\u2026 20 mA veya HART sinyaline d\u00f6n\u00fc\u015ft\u00fcrmeki\u00e7inkullan\u0131labilir. Opsiyon olarak mevcut i\u015flevler aras\u0131nda ortalama de\u011fer \u00fcretme, kar\u015f\u0131la\u015ft\u0131rma, \u00e7\u0131karma veya sens\u00f6r yedeklemesi bulunur. Ek olarak, HART protokol\u00fc ile serbest\u00e7e ayarlanabilen d\u00f6rt adede kadar de\u011fer a\u015fa\u011f\u0131 \u00e7evre birimlere iletilebilir. S\u0131cakl\u0131k vericisi, HART ve yaprogramlama aray\u00fcz\u00fc ile geli\u015ftirilmi\u015f diyagnostik fonksiyonlar\u0131n yan\u0131 s\u0131ra, y\u00fcksek do\u011fruluk, g\u00fcvenilirlik ve uzun s\u00fcreli stabilite sunar. Bu cihaz iki farkl\u0131 tasar\u0131ma sahiptir: DIN ray\u0131na montaj i\u00e7in muhafaza ve DIN50446\u2019ya g\u00f6re bir B ba\u011flant\u0131 kafas\u0131na montaj i\u00e7in (Resim4).<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-236\" src=\"http:\/\/blog.phoenixcontact.com\/marketing-tr\/wp-content\/uploads\/sites\/21\/2019\/10\/3.jpg\" alt=\"\" width=\"490\" height=\"507\" srcset=\"https:\/\/blog.phoenixcontact.com\/marketing-tr\/wp-content\/uploads\/sites\/21\/2019\/10\/3.jpg 1546w, https:\/\/blog.phoenixcontact.com\/marketing-tr\/wp-content\/uploads\/sites\/21\/2019\/10\/3-290x300.jpg 290w, https:\/\/blog.phoenixcontact.com\/marketing-tr\/wp-content\/uploads\/sites\/21\/2019\/10\/3-768x795.jpg 768w, https:\/\/blog.phoenixcontact.com\/marketing-tr\/wp-content\/uploads\/sites\/21\/2019\/10\/3-989x1024.jpg 989w, https:\/\/blog.phoenixcontact.com\/marketing-tr\/wp-content\/uploads\/sites\/21\/2019\/10\/3-624x646.jpg 624w\" sizes=\"auto, (max-width: 490px) 100vw, 490px\" \/><\/p>\n<p><em><strong>Resim 3: MACX Analog Ex: 12.5 mm toplam geni\u015fli\u011fe sahip kapsaml\u0131 \u00fcr\u00fcn gam\u0131<\/strong><\/em><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-237\" src=\"http:\/\/blog.phoenixcontact.com\/marketing-tr\/wp-content\/uploads\/sites\/21\/2019\/10\/4.jpg\" alt=\"\" width=\"479\" height=\"476\" srcset=\"https:\/\/blog.phoenixcontact.com\/marketing-tr\/wp-content\/uploads\/sites\/21\/2019\/10\/4.jpg 1600w, https:\/\/blog.phoenixcontact.com\/marketing-tr\/wp-content\/uploads\/sites\/21\/2019\/10\/4-150x150.jpg 150w, https:\/\/blog.phoenixcontact.com\/marketing-tr\/wp-content\/uploads\/sites\/21\/2019\/10\/4-300x298.jpg 300w, https:\/\/blog.phoenixcontact.com\/marketing-tr\/wp-content\/uploads\/sites\/21\/2019\/10\/4-768x764.jpg 768w, https:\/\/blog.phoenixcontact.com\/marketing-tr\/wp-content\/uploads\/sites\/21\/2019\/10\/4-1024x1018.jpg 1024w, https:\/\/blog.phoenixcontact.com\/marketing-tr\/wp-content\/uploads\/sites\/21\/2019\/10\/4-624x620.jpg 624w\" sizes=\"auto, (max-width: 479px) 100vw, 479px\" \/><\/p>\n<p><em><strong>Resim 4: MCR Field Analog \u00fcr\u00fcn gam\u0131na ait cihazlar<\/strong><\/em><\/p>\n<h1>Farkl\u0131 koruma s\u0131n\u0131f\u0131nda \u00e7ok fonksiyonlu proses g\u00f6stergeleri<\/h1>\n<p>Bu d\u00f6ng\u00fc beslemeli, HART uyumlu proses g\u00f6stergeleri, \u00f6l\u00e7\u00fclen de\u011ferlerin esnek \u015fekilde g\u00f6r\u00fcnt\u00fclenmesini sa\u011flar, b\u00f6ylece veriler istenen birimlerde \u00f6l\u00e7eklenebilir ve g\u00f6rselle\u015ftirilebilir. Cihazlar HART master olarak tasarland\u0131\u011f\u0131ndan, kullan\u0131c\u0131lar daha \u00f6nce kullan\u0131lmam\u0131\u015f HART fonksiyonlar\u0131ndan faydalanabilir. \u015eimdi, <strong>HART protokol\u00fc<\/strong> kullan\u0131larak ekranda d\u00f6rt adede kadar ek \u00f6l\u00e7\u00fcm de\u011feri g\u00f6sterilebilir.<\/p>\n<p>\u00c7ok fonksiyonlu proses g\u00f6stergeleri, klasik sinyal ko\u015fullay\u0131c\u0131lar\u0131n\u0131n \u00f6zelliklerini esnek g\u00f6sterge cihazlar\u0131n\u0131n avantajlar\u0131yla birle\u015ftirir. \u00c7ok fonksiyonlu giri\u015f, ak\u0131m, gerilim, termokupllar veya RTD\u2019ler gibi farkl\u0131 analog de\u011ferleri yakalamak i\u00e7in kullan\u0131labilir. Giri\u015f ayr\u0131ca gerekirse sens\u00f6re gerilim sa\u011flar. \u0130ki r\u00f6le \u00e7\u0131k\u0131\u015f\u0131 farkl\u0131 s\u0131n\u0131r de\u011fer anahtarlama fonksiyonlar\u0131 i\u00e7in kullan\u0131labilirken, sinyal analog \u00e7\u0131k\u0131\u015f \u00fczerinden a\u015fa\u011f\u0131 sistemlerine iletilir. Esnek ayar se\u00e7enekleri sayesinde ekran, kullan\u0131c\u0131n\u0131n t\u00fcm gereksinimlerini kar\u015f\u0131layacak \u015fekilde ayarlanabilir. \u00d6l\u00e7\u00fclen de\u011ferlerin bildirimi istenildi\u011fi \u015fekilde \u00f6l\u00e7eklendirilebilir ve sinyal, istenen birim veya \u00f6l\u00e7\u00fcm noktas\u0131 ile birlikte iletilebilir. Hem \u00e7ok i\u015flevli proses g\u00f6stergeleri hem de HART uyumlu proses g\u00f6stergeleri IP20 ve IP66 koruma s\u0131n\u0131f\u0131nda mevcuttur.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Kendinden g\u00fcvenli (Ex i) koruma t\u00fcr\u00fc, potansiyel olarak patlay\u0131c\u0131 b\u00f6lgeye sahip sistemlerde, \u00f6l\u00e7me ve kontrol teknolojisi alan\u0131nda d\u00fcnya \u00e7ap\u0131nda kendini kan\u0131tlam\u0131\u015ft\u0131r. Birincisi, kurulum a\u00e7\u0131s\u0131ndan di\u011fer koruma t\u00fcrlerine k\u0131yasla \u00e7ok daha uygun maliyetlidir. Di\u011feri, bak\u0131m \u00e7al\u0131\u015fmalar\u0131 ve operasyon s\u0131ras\u0131nda de\u011fi\u015fikliklere izin verir. Ayr\u0131ca, basit bir elektrik ekipman\u0131n\u0131 \u00f6zel onay almadan kullanmak da m\u00fcmk\u00fcnd\u00fcr.<\/p>\n","protected":false},"author":184,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-233","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.7 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Kendinden G\u00fcvenli Devrelerin Tasarlanmas\u0131 - T\u00fcrkiye<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/blog.phoenixcontact.com\/marketing-tr\/2019\/10\/06\/kendinden-guvenli-devrelerin-tasarlanmasi\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Kendinden G\u00fcvenli Devrelerin Tasarlanmas\u0131 - T\u00fcrkiye\" \/>\n<meta property=\"og:description\" content=\"Kendinden g\u00fcvenli (Ex i) koruma t\u00fcr\u00fc, potansiyel olarak patlay\u0131c\u0131 b\u00f6lgeye sahip sistemlerde, \u00f6l\u00e7me ve kontrol teknolojisi alan\u0131nda d\u00fcnya \u00e7ap\u0131nda kendini kan\u0131tlam\u0131\u015ft\u0131r. 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