{"product_id":"bk7520-beckhoff-sercos-ii-bus-coupler-with-fiber-optic-interface","title":"BK7520 | Beckhoff SERCOS II Bus Coupler with Fiber Optic Interface","description":"\u003ch4\u003eDescription \u003c\/h4\u003e\n\u003cp data-end=\"396\" data-start=\"144\"\u003eThe Beckhoff BK7520 is a SERCOS II bus coupler designed to link the SERCOS bus system with modular electronic terminal blocks. Supporting up to 64 terminals, or 255 with K-bus extension, it enables scalable integration with automatic process image mapping.\u003c\/p\u003e\n\u003cp class=\"\" data-end=\"574\" data-start=\"284\"\u003e \u003c\/p\u003e\n\u003cp class=\"\" data-end=\"574\" data-start=\"284\"\u003e \u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications \u003c\/h4\u003e\n\u003ctable style=\"width: 100%; height: 548.626px;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 30.7332%; height: 19.5938px;\"\u003e\u003cstrong\u003eCondition\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 68.9032%; height: 19.5938px;\"\u003eNew\/Never Used Surplus\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 30.7332%; height: 19.5938px;\"\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 68.9032%; height: 19.5938px;\"\u003eBeckhoff\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 30.7332%; height: 19.5938px;\"\u003e\u003cstrong\u003eCategory\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 68.9032%; height: 19.5938px;\"\u003eFieldbus \u0026amp; Communication Interfaces\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 30.7332%; height: 19.5938px;\"\u003e\u003cstrong\u003ePart Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 68.9032%; height: 19.5938px;\"\u003eBK7520\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 30.7332%; height: 19.5938px;\"\u003e\u003cstrong\u003eSubcategory\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 68.9032%; height: 19.5938px;\"\u003eBus Couplers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 30.7332%; height: 19.5938px;\"\u003e\u003cstrong\u003eBus System\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 68.9032%; height: 19.5938px;\"\u003eSERCOS II\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 30.7332%; height: 19.5938px;\"\u003e\u003cstrong\u003eNumber of Bus Terminals\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 68.9032%; height: 19.5938px;\"\u003e64 (up to 255 with K-bus extension)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 30.7332%; height: 19.5938px;\"\u003e\u003cstrong\u003eMax. Fieldbus Capacity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 68.9032%; height: 19.5938px;\"\u003e254 word I\/O for cyclic interface (depending on master)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 30.7332%; height: 19.5938px;\"\u003e\u003cstrong\u003eDigital Peripheral Signals\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 68.9032%; height: 19.5938px;\"\u003e1,020 inputs\/outputs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003ctd style=\"width: 30.7332%; height: 39.1875px;\"\u003e\u003cstrong\u003eAnalog Peripheral Signals\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 68.9032%; height: 39.1875px;\"\u003e254 inputs\/outputs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 30.7332%; height: 19.5938px;\"\u003e\u003cstrong\u003eConfiguration Tool\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 68.9032%; height: 19.5938px;\"\u003eKS2000 software\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 30.7332%; height: 19.5938px;\"\u003e\u003cstrong\u003eData Transfer Rates\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 68.9032%; height: 19.5938px;\"\u003e2\/4\/8\/16 Mbaud (set via configuration switch)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 30.7332%; height: 19.5938px;\"\u003e\u003cstrong\u003eBus Interface\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 68.9032%; height: 19.5938px;\"\u003eFSMA standard, IEC 872-2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 30.7332%; height: 19.5938px;\"\u003e\u003cstrong\u003eTransmission Medium\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 68.9032%; height: 19.5938px;\"\u003e1,000 µm plastic fiber optic\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 30.7332%; height: 19.5938px;\"\u003e\u003cstrong\u003ePower Supply\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 68.9032%; height: 19.5938px;\"\u003e24 V DC (-15%\/+20%)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 30.7332%; height: 19.5938px;\"\u003e\u003cstrong\u003eInput Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 68.9032%; height: 19.5938px;\"\u003e70 mA + (total K-bus current)\/4, max. 500 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 30.7332%; height: 19.5938px;\"\u003e\u003cstrong\u003eStarting Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 68.9032%; height: 19.5938px;\"\u003e2.5 × continuous current\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 30.7332%; height: 19.5938px;\"\u003e\u003cstrong\u003eRecommended Fuse\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 68.9032%; height: 19.5938px;\"\u003e≤ 10 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 30.7332%; height: 19.5938px;\"\u003e\u003cstrong\u003eK-Bus Current Supply\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 68.9032%; height: 19.5938px;\"\u003e1750 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 30.7332%; height: 19.5938px;\"\u003e\u003cstrong\u003ePower Contacts\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 68.9032%; height: 19.5938px;\"\u003eMax. 24 V DC \/ Max. 10 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 30.7332%; height: 19.5938px;\"\u003e\u003cstrong\u003eElectrical Isolation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 68.9032%; height: 19.5938px;\"\u003e500 V (power contact\/supply voltage\/fieldbus)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 30.7332%; height: 19.5938px;\"\u003e\u003cstrong\u003eStation Distance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 68.9032%; height: 19.5938px;\"\u003e40 m (plastic fiber optic)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 30.7332%; height: 19.5938px;\"\u003e\u003cstrong\u003eOperating Temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 68.9032%; height: 19.5938px;\"\u003e0…55 °C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 30.7332%; height: 19.5938px;\"\u003e\u003cstrong\u003eStorage Temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 68.9032%; height: 19.5938px;\"\u003e-25…+85 °C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 30.7332%; height: 19.5938px;\"\u003e\u003cstrong\u003eRelative Humidity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 68.9032%; height: 19.5938px;\"\u003e95%, no condensation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 30.7332%; height: 19.5938px;\"\u003e\u003cstrong\u003eProtection Class\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 68.9032%; height: 19.5938px;\"\u003eIP20\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 30.7332%; height: 19.5938px;\"\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 68.9032%; height: 19.5938px;\"\u003eApprox. 170 g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch4\u003e\u003cbr\u003e\u003c\/h4\u003e\n\u003ch4\u003eInformation About \u003cspan data-sheets-root=\"1\"\u003eBK7520\u003c\/span\u003e\n\u003c\/h4\u003e\n\u003cp data-start=\"3472\" data-end=\"4101\"\u003eThe BK7520 is a Beckhoff bus coupler that integrates the SERCOS II bus system with modular electronic terminals, allowing distributed I\/O in automation systems. One coupler can connect up to 64 terminals directly and up to 255 with K-bus extension, making it highly scalable for large systems. The device automatically identifies connected terminals and assigns their inputs and outputs to the process image, simplifying setup and configuration. With support for plastic fiber optic transmission at adjustable rates from 2 to 16 Mbaud, it ensures fast and reliable communication over distances up to 40 meters between stations.\u003c\/p\u003e\n\u003cp data-start=\"4103\" data-end=\"4126\"\u003e\u003cstrong data-start=\"4107\" data-end=\"4124\"\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"4127\" data-end=\"5117\"\u003e\n\u003cli data-start=\"4127\" data-end=\"4251\"\u003e\n\u003cp data-start=\"4129\" data-end=\"4251\"\u003e\u003cstrong data-start=\"4129\" data-end=\"4159\"\u003eSERCOS II Bus Integration:\u003c\/strong\u003e Links SERCOS II systems with Beckhoff Bus Terminals for modular automation architectures.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"4252\" data-end=\"4366\"\u003e\n\u003cp data-start=\"4254\" data-end=\"4366\"\u003e\u003cstrong data-start=\"4254\" data-end=\"4280\"\u003eHigh Channel Capacity:\u003c\/strong\u003e Supports up to 64 terminals natively and up to 255 with K-bus extension technology.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"4367\" data-end=\"4492\"\u003e\n\u003cp data-start=\"4369\" data-end=\"4492\"\u003e\u003cstrong data-start=\"4369\" data-end=\"4405\"\u003eAutomatic Process Image Mapping:\u003c\/strong\u003e Recognizes connected terminals and generates input\/output assignments automatically.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"4493\" data-end=\"4601\"\u003e\n\u003cp data-start=\"4495\" data-end=\"4601\"\u003e\u003cstrong data-start=\"4495\" data-end=\"4519\"\u003eFlexible Data Rates:\u003c\/strong\u003e Operates at selectable speeds of 2, 4, 8, or 16 Mbaud via configuration switch.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"4602\" data-end=\"4738\"\u003e\n\u003cp data-start=\"4604\" data-end=\"4738\"\u003e\u003cstrong data-start=\"4604\" data-end=\"4641\"\u003eRobust Fiber Optic Communication:\u003c\/strong\u003e Uses FSMA-compliant plastic fiber optic cabling for reliable, interference-free data transfer.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"4739\" data-end=\"4858\"\u003e\n\u003cp data-start=\"4741\" data-end=\"4858\"\u003e\u003cstrong data-start=\"4741\" data-end=\"4766\"\u003eLarge I\/O Capability:\u003c\/strong\u003e Handles up to 1,020 digital signals and 254 analog signals for extensive control systems.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"4859\" data-end=\"4992\"\u003e\n\u003cp data-start=\"4861\" data-end=\"4992\"\u003e\u003cstrong data-start=\"4861\" data-end=\"4893\"\u003eStrong Electrical Isolation:\u003c\/strong\u003e Provides 500 V separation between fieldbus, power supply, and power contacts for safe operation.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"4993\" data-end=\"5117\"\u003e\n\u003cp data-start=\"4995\" data-end=\"5117\"\u003e\u003cstrong data-start=\"4995\" data-end=\"5027\"\u003eCompact and Reliable Design:\u003c\/strong\u003e Features a lightweight 170 g build with IP20 protection and wide temperature tolerance.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"5119\" data-end=\"5254\"\u003eThe BK7520 delivers the reliability and precision required for scalable SERCOS II fieldbus integration in modular automation systems.\u003c\/p\u003e","brand":"Beckhoff","offers":[{"title":"Default Title","offer_id":49105236721920,"sku":"BK7520","price":586.53,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0388\/5331\/2557\/files\/bk7520__web_preview_png.webp?v=1785543251","url":"https:\/\/alotechparts.com\/products\/bk7520-beckhoff-sercos-ii-bus-coupler-with-fiber-optic-interface","provider":"Alo Tech Solutions","version":"1.0","type":"link"}