{"product_id":"beckhoff-bk1120-ethercat-bus-coupler-rj45-fast-delivery","title":"BK1120 | Beckhoff EtherCAT Bus Coupler, 100BASE-TX, Supports Up to 64 Terminals","description":"\u003ch4\u003eDescription \u003c\/h4\u003e\n\u003cp data-end=\"451\" data-start=\"0\"\u003eThe Beckhoff BK1120 EtherCAT Bus Coupler links the EtherCAT fieldbus system with Beckhoff Bus Terminals, converting Ethernet 100BASE-TX telegrams to the internal terminal bus. It supports automatic process image assignment and enables modular expansion for flexible industrial I\/O architectures.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications \u003c\/h4\u003e\n\u003ctable style=\"width: 99.964%; height: 568.4px;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 29.6346%; height: 19.6px;\"\u003e\u003cstrong\u003eCondition\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 70.0507%; height: 19.6px;\"\u003eNew\/Never Used Surplus\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 29.6346%; height: 19.6px;\"\u003e\u003cstrong\u003ePart Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 70.0507%; height: 19.6px;\"\u003eBK1120\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 29.6346%; height: 19.6px;\"\u003e\u003cstrong\u003eManufacturer\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 70.0507%; height: 19.6px;\"\u003eBeckhoff\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 29.6346%; height: 19.6px;\"\u003e\u003cstrong\u003eCategory\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 70.0507%; height: 19.6px;\"\u003ePLCs\/Machine Control\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 29.6346%; height: 19.6px;\"\u003e\u003cstrong\u003eSubcategory\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 70.0507%; height: 19.6px;\"\u003ePLC Module\/Rack\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 29.6346%; height: 19.6px;\"\u003e\u003cstrong\u003eNumber of Bus Terminals\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 70.0507%; height: 19.6px;\"\u003e64 (255 with K-Bus extension)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 29.6346%; height: 19.6px;\"\u003e\u003cstrong\u003eMax. Fieldbus Data\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 70.0507%; height: 19.6px;\"\u003e1024 bytes input \/ 1024 bytes output\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 29.6346%; height: 19.6px;\"\u003e\u003cstrong\u003eConfiguration\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 70.0507%; height: 19.6px;\"\u003eKS2000 or EtherCAT (ADS)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 29.6346%; height: 19.6px;\"\u003e\u003cstrong\u003eData Transfer Rate\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 70.0507%; height: 19.6px;\"\u003e100 Mbit\/s\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 29.6346%; height: 19.6px;\"\u003e\u003cstrong\u003eBus Interface\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 70.0507%; height: 19.6px;\"\u003e2 × RJ45\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 29.6346%; height: 19.6px;\"\u003e\u003cstrong\u003eMedium\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 70.0507%; height: 19.6px;\"\u003eEthernet\/EtherCAT Cat.5 cable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 29.6346%; height: 19.6px;\"\u003e\u003cstrong\u003ePower Supply\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 70.0507%; height: 19.6px;\"\u003e24 VDC (-15% \/ +20%)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 29.6346%; height: 19.6px;\"\u003e\u003cstrong\u003eInput Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 70.0507%; height: 19.6px;\"\u003e70 mA + K-Bus current\/4 (max. 500 mA)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 29.6346%; height: 19.6px;\"\u003e\u003cstrong\u003eStarting Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 70.0507%; height: 19.6px;\"\u003eApprox. 2.5× continuous current\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 29.6346%; height: 19.6px;\"\u003e\u003cstrong\u003eRecommended Fuse\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 70.0507%; height: 19.6px;\"\u003e≤ 10 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 29.6346%; height: 19.6px;\"\u003e\u003cstrong\u003eK-Bus Current Supply\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 70.0507%; height: 19.6px;\"\u003e1750 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 29.6346%; height: 19.6px;\"\u003e\u003cstrong\u003ePower Contacts\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 70.0507%; height: 19.6px;\"\u003eMax. 24 VDC, 10 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 29.6346%; height: 19.6px;\"\u003e\u003cstrong\u003eElectrical Isolation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 70.0507%; height: 19.6px;\"\u003e500 V (contacts\/supply\/Ethernet)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 29.6346%; height: 19.6px;\"\u003e\u003cstrong\u003eMax. Station Distance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 70.0507%; height: 19.6px;\"\u003e100 m (100BASE-TX)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 29.6346%; height: 19.6px;\"\u003e\u003cstrong\u003eData Transfer Time\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 70.0507%; height: 19.6px;\"\u003e0.01 ms (10 modules, 32-bit I\/O, no K-Bus runtime)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 29.6346%; height: 19.6px;\"\u003e\u003cstrong\u003eOperating Temp.\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 70.0507%; height: 19.6px;\"\u003e–25…+60 °C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 29.6346%; height: 19.6px;\"\u003e\u003cstrong\u003eStorage Temp.\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 70.0507%; height: 19.6px;\"\u003e–40…+85 °C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 29.6346%; height: 19.6px;\"\u003e\u003cstrong\u003eRelative Humidity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 70.0507%; height: 19.6px;\"\u003e95% (non-condensing)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 29.6346%; height: 19.6px;\"\u003e\u003cstrong\u003eVibration\/Shock\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 70.0507%; height: 19.6px;\"\u003eEN 60068-2-6 \/ EN 60068-2-27\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 29.6346%; height: 19.6px;\"\u003e\u003cstrong\u003eEMC\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 70.0507%; height: 19.6px;\"\u003eEN 61000-6-2 \/ EN 61000-6-4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 29.6346%; height: 19.6px;\"\u003e\u003cstrong\u003eProtection Rating\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 70.0507%; height: 19.6px;\"\u003eIP20\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 29.6346%; height: 19.6px;\"\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 70.0507%; height: 19.6px;\"\u003eApprox. 150 g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 29.6346%; height: 19.6px;\"\u003e\u003cstrong\u003eApprovals\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 70.0507%; height: 19.6px;\"\u003eCE, UL, ATEX, IECEx\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch4\u003eInformation About BK1120\u003c\/h4\u003e\n\u003cp\u003eThe Beckhoff BK1120 EtherCAT Bus Coupler provides seamless interfacing between the EtherCAT fieldbus and the Bus Terminal system by translating Ethernet 100BASE-TX telegrams into the internal, fieldbus-independent terminal bus. A standard station supports up to 64 Bus Terminals plus an end terminal, while the K-Bus extension allows installations to scale up to 255 terminals. The coupler integrates two RJ45 interfaces—one for upstream communication and the other for cascading downstream EtherCAT devices—enhancing network versatility. With direct 24 VDC system and field supply inputs, the BK1120 distributes communication and load power efficiently across connected terminals. Its robust isolation, high-speed transfer performance, and compliance with industrial standards make it a reliable backbone component for modular EtherCAT architectures.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHigh-speed EtherCAT interface: Converts Ethernet 100BASE-TX telegrams to the internal terminal bus for fast and deterministic communication.\u003c\/li\u003e\n\u003cli\u003eScalable system architecture: Supports 64 Bus Terminals natively and up to 255 terminals with K-Bus expansion, enabling large I\/O stations.\u003c\/li\u003e\n\u003cli\u003eDual RJ45 ports: Allows network daisy-chaining and simplified EtherCAT topology design in complex installations.\u003c\/li\u003e\n\u003cli\u003eRobust electrical design: 500 V isolation and 10 A power contacts ensure reliable operation in industrial environments.\u003c\/li\u003e\n\u003cli\u003eAutomatic process image assignment: Reduces configuration time and ensures seamless integration with EtherCAT masters.\u003c\/li\u003e\n\u003cli\u003eWide environmental tolerance: Operates from –25°C to +60°C with full industrial EMC compliance for harsh applications.\u003c\/li\u003e\n\u003cli\u003eFlexible configuration options: Programmable via KS2000 or EtherCAT ADS for versatile system integration.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe BK1120 delivers the reliability and precision required for scalable, high-speed EtherCAT-based automation systems.\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":47541780283690,"sku":"BK1120","price":427.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/0392\/4266\/files\/bk1120__web_preview_png.webp?v=1708124879","url":"https:\/\/iqelectro.com\/products\/beckhoff-bk1120-ethercat-bus-coupler-rj45-fast-delivery","provider":"IQElectro","version":"1.0","type":"link"}