{"product_id":"bk3120-beckhoff-profibus-dp-v1-bus-coupler-economy-plus-24-v-dc","title":"BK3120 | Beckhoff PROFIBUS DP V1 Bus Coupler Economy Plus 24 V DC","description":"\u003ch4\u003eDescription \u003c\/h4\u003e\n\u003cp data-end=\"438\" data-start=\"101\"\u003eThe Beckhoff BK3120 is a PROFIBUS DP V1 Bus Coupler from the Economy Plus series, designed for efficient integration of Bus Terminals into PROFIBUS networks. It supports automatic baud rate detection up to 12 Mbaud and allows connection of up to 255 distributed Bus Terminals via K-bus extension technology.\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: 99.964%; height: 568.4px;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 25.7838%; height: 19.6px;\"\u003e\u003cstrong\u003eCondition\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 74.083%; 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: 25.7838%; height: 19.6px;\"\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 74.083%; height: 19.6px;\"\u003eBeckhoff\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 25.7838%; height: 19.6px;\"\u003e\u003cstrong\u003eCategory\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 74.083%; height: 19.6px;\"\u003eIndustrial Automation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 25.7838%; height: 19.6px;\"\u003e\u003cstrong\u003ePart Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 74.083%; height: 19.6px;\"\u003eBK3120\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 25.7838%; height: 19.6px;\"\u003e\u003cstrong\u003eSubcategory\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 74.083%; height: 19.6px;\"\u003eBus Coupler\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 25.7838%; height: 19.6px;\"\u003e\u003cstrong\u003eProtocol\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 74.083%; height: 19.6px;\"\u003ePROFIBUS DP V1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.2px;\"\u003e\n\u003ctd style=\"width: 25.7838%; height: 39.2px;\"\u003e\u003cstrong\u003eMax. Terminals Supported\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 74.083%; height: 39.2px;\"\u003e64 Bus Terminals (255 with K-bus extension)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.2px;\"\u003e\n\u003ctd style=\"width: 25.7838%; height: 39.2px;\"\u003e\u003cstrong\u003eFieldbus Data Capacity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 74.083%; height: 39.2px;\"\u003e128 bytes input \/ 128 bytes output\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 25.7838%; height: 19.6px;\"\u003e\u003cstrong\u003eData Transfer Rates\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 74.083%; height: 19.6px;\"\u003eAuto-detect up to 12 Mbaud\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 25.7838%; height: 19.6px;\"\u003e\u003cstrong\u003eBus Interface\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 74.083%; height: 19.6px;\"\u003e1 × D-sub 9-pin socket, shielded\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 25.7838%; height: 19.6px;\"\u003e\u003cstrong\u003eData Medium\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 74.083%; height: 19.6px;\"\u003eShielded copper cable, 2 × 0.25 mm²\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 25.7838%; height: 19.6px;\"\u003e\u003cstrong\u003ePower Supply\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 74.083%; height: 19.6px;\"\u003e24 V DC (-15% \/ +20%)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 25.7838%; height: 19.6px;\"\u003e\u003cstrong\u003eInput Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 74.083%; height: 19.6px;\"\u003e70 mA + (total K-bus current)\/4, max. 500 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.2px;\"\u003e\n\u003ctd style=\"width: 25.7838%; height: 39.2px;\"\u003e\u003cstrong\u003eK-bus Current Supply\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 74.083%; height: 39.2px;\"\u003e1750 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 25.7838%; height: 19.6px;\"\u003e\u003cstrong\u003ePower Contacts\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 74.083%; height: 19.6px;\"\u003eMax. 24 V DC \/ 10 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 25.7838%; height: 19.6px;\"\u003e\u003cstrong\u003eElectrical Isolation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 74.083%; height: 19.6px;\"\u003e500 V (power contact\/supply voltage\/fieldbus)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 25.7838%; height: 19.6px;\"\u003e\u003cstrong\u003eSupported Services\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 74.083%; height: 19.6px;\"\u003ePROFIBUS DP V1 services for parameterization and configuration\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 25.7838%; height: 19.6px;\"\u003e\u003cstrong\u003eConfiguration\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 74.083%; height: 19.6px;\"\u003eAutomatic baud rate detection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 25.7838%; height: 19.6px;\"\u003e\u003cstrong\u003eMounting Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 74.083%; height: 19.6px;\"\u003eDIN-rail\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 25.7838%; height: 19.6px;\"\u003e\u003cstrong\u003eHousing\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 74.083%; height: 19.6px;\"\u003eModular plastic housing, IP20\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.2px;\"\u003e\n\u003ctd style=\"width: 25.7838%; height: 39.2px;\"\u003e\u003cstrong\u003eOperating Temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 74.083%; height: 39.2px;\"\u003e-25°C to +60°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.2px;\"\u003e\n\u003ctd style=\"width: 25.7838%; height: 39.2px;\"\u003e\u003cstrong\u003eStorage Temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 74.083%; height: 39.2px;\"\u003e-40°C to +85°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 25.7838%; height: 19.6px;\"\u003e\u003cstrong\u003eRelative Humidity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 74.083%; height: 19.6px;\"\u003e95%, non-condensing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 25.7838%; height: 19.6px;\"\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 74.083%; height: 19.6px;\"\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\"\u003eBK3120\u003c\/span\u003e\n\u003c\/h4\u003e\n\u003cp\u003eThe BK3120 is part of Beckhoff’s PROFIBUS Bus Coupler series and provides a cost-effective and high-performance interface for connecting modular I\/O systems to PROFIBUS networks. The Economy Plus version enhances functionality by supporting K-bus extension technology, which allows the connection of up to 255 Bus Terminals across distributed locations. It supports PROFIBUS DP V1 services, enabling parameterization, diagnostics, and limit value adjustment for complex analog modules directly from the controller. The coupler automatically detects baud rates up to 12 Mbaud, ensuring optimal communication performance across diverse automation environments. Designed for industrial use, the BK3120 provides electrical isolation, robust EMC protection, and reliable 24 V DC operation for stable integration into distributed automation architectures.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eExpanded I\/O Capacity: Supports up to 64 standard or 255 extended Bus Terminals using K-bus extension technology, ideal for scalable systems.\u003c\/li\u003e\n\u003cli\u003ePROFIBUS DP V1 Compliance: Enables fast data exchange and advanced communication features such as parameterization and diagnostic access.\u003c\/li\u003e\n\u003cli\u003eHigh-Speed Communication: Automatically detects and supports baud rates up to 12 Mbaud for optimized network performance.\u003c\/li\u003e\n\u003cli\u003eLarge Data Throughput: Capable of handling up to 128 bytes of input and 128 bytes of output data for complex control tasks.\u003c\/li\u003e\n\u003cli\u003eDirect Terminal Access: PROFIBUS DP V1 services allow real-time register access and configuration of individual Bus Terminals.\u003c\/li\u003e\n\u003cli\u003eFlexible Topology Integration: Uses shielded copper cabling with D-sub connection for reliable and interference-free data transmission.\u003c\/li\u003e\n\u003cli\u003eElectrical Isolation: 500 V isolation between power supply, fieldbus, and I\/O ensures safe operation and protection against noise.\u003c\/li\u003e\n\u003cli\u003eRobust Industrial Design: Operates within a wide temperature range (-25°C to +60°C) and withstands up to 95% relative humidity.\u003c\/li\u003e\n\u003cli\u003eSimplified Installation: Compact DIN-rail housing with automatic baud rate detection and minimal configuration requirements.\u003c\/li\u003e\n\u003cli\u003eReliable Power Delivery: Integrated K-bus supply up to 1750 mA and 10 A power contact capacity for connected modules.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe BK3120 delivers the reliability, scalability, and communication precision required for integrating modular I\/O terminals into PROFIBUS-based automation networks.\u003c\/p\u003e","brand":"Beckhoff","offers":[{"title":"Default Title","offer_id":49105084317952,"sku":"BK3120","price":393.96,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0388\/5331\/2557\/files\/bk3120__web_preview.png?v=1785539768","url":"https:\/\/alotechparts.com\/products\/bk3120-beckhoff-profibus-dp-v1-bus-coupler-economy-plus-24-v-dc","provider":"Alo Tech Solutions","version":"1.0","type":"link"}