{"product_id":"beckhoff-bk9103-profinet-bus-coupler","title":"BECKHOFF BK9103 PROFINET Bus Coupler","description":"\u003ch3\u003eDescription\u003c\/h3\u003e\n\u003cp\u003eThe BECKHOFF BK9103 is a PROFINET Bus Coupler designed to connect the Beckhoff Bus Terminal system to PROFINET RT (Class B) networks. As an interface between the higher-level fieldbus and the modular electronic terminal blocks, the BK9103 translates fieldbus telegrams into the internal K-bus signal format. This coupler handles data transmission, protocol handling, and power distribution for connected Bus Terminals within industrial automation architectures.\u003c\/p\u003e\n\u003cp\u003eEquipped with a dual-channel switch featuring two RJ45 interfaces, the BK9103 supports line and star network topologies without requiring an external network switch. The unit powers the internal K-bus and supplies the power contacts, supporting up to 64 Bus Terminals directly or expanding up to 255 Bus Terminals using K-bus extension technology. Configuration of the connected I\/O channels is supported via the KS2000 software tool.\u003c\/p\u003e\n\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003ePROFINET RT (Class B) communication protocol support for real-time Ethernet data exchange\u003c\/li\u003e\n  \u003cli\u003eIntegrated 2-channel switch with two RJ45 connectors for flexible line and star wiring topologies\u003c\/li\u003e\n  \u003cli\u003eSupports up to 64 Bus Terminals natively and up to 255 Bus Terminals with K-bus extension\u003c\/li\u003e\n  \u003cli\u003eProcesses up to 512 bytes of input data and 512 bytes of output data over the fieldbus\u003c\/li\u003e\n  \u003cli\u003eIntegrated power supply providing 1750 mA for K-bus communication\u003c\/li\u003e\n  \u003cli\u003eAutomatic 10\/100 Mbit\/s transmission rate detection\u003c\/li\u003e\n  \u003cli\u003eDiagnostic indicators for operating state, network link, and bus errors\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003ePROFINET-based modular machine building and discrete manufacturing systems\u003c\/li\u003e\n  \u003cli\u003eDistributed industrial I\/O data acquisition and control architectures\u003c\/li\u003e\n  \u003cli\u003eFactory automation networks requiring line or star Ethernet topologies\u003c\/li\u003e\n  \u003cli\u003eRetrofitting and expanding existing K-bus terminal stations into PROFINET networks\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ch4\u003eGeneral\u003c\/h4\u003e\n\u003ctable\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n      \u003cth\u003eParameter\u003c\/th\u003e\n      \u003cth\u003eSpecification\u003c\/th\u003e\n    \u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eManufacturer\u003c\/td\u003e\n      \u003ctd\u003eBECKHOFF\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eExact Model\u003c\/td\u003e\n      \u003ctd\u003eBK9103\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eProduct Type\u003c\/td\u003e\n      \u003ctd\u003ePROFINET Bus Coupler\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eNumber of Bus Terminals\u003c\/td\u003e\n      \u003ctd\u003e64 (255 with K-bus extension)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eMax. Fieldbus Data Size\u003c\/td\u003e\n      \u003ctd\u003e512 byte input and 512 byte output\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eDigital Peripheral Signals\u003c\/td\u003e\n      \u003ctd\u003e512 inputs \/ 512 outputs\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eAnalog Peripheral Signals\u003c\/td\u003e\n      \u003ctd\u003e256 inputs \/ 256 outputs\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eConfiguration\u003c\/td\u003e\n      \u003ctd\u003evia KS2000\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch4\u003eCommunication and Interface\u003c\/h4\u003e\n\u003ctable\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n      \u003cth\u003eParameter\u003c\/th\u003e\n      \u003cth\u003eSpecification\u003c\/th\u003e\n    \u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eProtocol\u003c\/td\u003e\n      \u003ctd\u003ePROFINET RT (Class B)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eData Transfer Rates\u003c\/td\u003e\n      \u003ctd\u003e10\/100 Mbit\/s, automatic recognition\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eBus Interface\u003c\/td\u003e\n      \u003ctd\u003e2 x RJ45 (2-channel switch)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eData Transfer Medium\u003c\/td\u003e\n      \u003ctd\u003e4 x 2 twisted pair copper cable; category 3 (10 Mbit\/s), category 5 (100 Mbit\/s)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eTopology\u003c\/td\u003e\n      \u003ctd\u003eLine or star wiring\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eCascading\u003c\/td\u003e\n      \u003ctd\u003eUp to 20 BK9103 or max. line length 2 km\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eDistance Between Stations\u003c\/td\u003e\n      \u003ctd\u003e100 m between hub\/switch and bus coupler or between bus coupler and bus coupler\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch4\u003eElectrical\u003c\/h4\u003e\n\u003ctable\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n      \u003cth\u003eParameter\u003c\/th\u003e\n      \u003cth\u003eSpecification\u003c\/th\u003e\n    \u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n      \u003ctd\u003ePower Supply\u003c\/td\u003e\n      \u003ctd\u003e24 V DC (-15 percent \/ +20 percent)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eInput Current\u003c\/td\u003e\n      \u003ctd\u003e70 mA + (total K-bus current) \/ 4, 500 mA max.\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eStarting Current\u003c\/td\u003e\n      \u003ctd\u003e2.5 x continuous current\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eRecommended Fuse\u003c\/td\u003e\n      \u003ctd\u003eLess than or equal to 10 A\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eCurrent Supply K-bus\u003c\/td\u003e\n      \u003ctd\u003e1750 mA\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003ePower Contacts\u003c\/td\u003e\n      \u003ctd\u003eMax. 24 V DC \/ max. 10 A\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eElectrical Isolation\u003c\/td\u003e\n      \u003ctd\u003e500 V (power contact \/ supply voltage \/ fieldbus)\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch4\u003eMechanical and Environmental\u003c\/h4\u003e\n\u003ctable\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n      \u003cth\u003eParameter\u003c\/th\u003e\n      \u003cth\u003eSpecification\u003c\/th\u003e\n    \u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eWeight\u003c\/td\u003e\n      \u003ctd\u003eApprox. 170 g\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eOperating Temperature\u003c\/td\u003e\n      \u003ctd\u003e-25 to +60 degC\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eStorage Temperature\u003c\/td\u003e\n      \u003ctd\u003e-40 to +85 degC\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eRelative Humidity\u003c\/td\u003e\n      \u003ctd\u003e95 percent, no condensation\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eVibration\/Shock Resistance\u003c\/td\u003e\n      \u003ctd\u003eConforms to EN 60068-2-6 \/ EN 60068-2-27\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eEMC Immunity \/ Emission\u003c\/td\u003e\n      \u003ctd\u003eConforms to EN 61000-6-2 \/ EN 61000-6-4\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eProtection Rating \/ Installation Position\u003c\/td\u003e\n      \u003ctd\u003eIP20 \/ variable\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch4\u003eCompliance and Certifications\u003c\/h4\u003e\n\u003ctable\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n      \u003cth\u003eParameter\u003c\/th\u003e\n      \u003cth\u003eSpecification\u003c\/th\u003e\n    \u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eApprovals and Markings\u003c\/td\u003e\n      \u003ctd\u003eCE, UL, ATEX, IECEx, DNV GL\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eATEX Marking\u003c\/td\u003e\n      \u003ctd\u003eII 3 G Ex ec IIC T4 Gc\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eIECEx Marking\u003c\/td\u003e\n      \u003ctd\u003eEx ec IIC T4 Gc\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eConnections \/ Interfaces\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n      \u003cth\u003eInterface\u003c\/th\u003e\n      \u003cth\u003eFunction\u003c\/th\u003e\n    \u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eRJ45 Port 1\u003c\/td\u003e\n      \u003ctd\u003ePROFINET communication interface (Port 1 of internal switch)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eRJ45 Port 2\u003c\/td\u003e\n      \u003ctd\u003ePROFINET communication interface (Port 2 of internal switch)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003ePower Contacts (24 V DC)\u003c\/td\u003e\n      \u003ctd\u003eField-side power supply for connected terminals (max. 10 A)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eBus Terminal K-bus\u003c\/td\u003e\n      \u003ctd\u003eInternal internal data bus connection to modular Bus Terminals\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eInstallation Guidelines\u003c\/h3\u003e\n\u003col\u003e\n  \u003cli\u003eEnsure all power sources are switched off and isolated before performing any mechanical or electrical installation work.\u003c\/li\u003e\n  \u003cli\u003eVerify that the mounting rail is securely fixed and grounded according to control cabinet specifications.\u003c\/li\u003e\n  \u003cli\u003eMount the BECKHOFF BK9103 bus coupler onto the DIN rail by snapping it into position alongside the target terminal assembly.\u003c\/li\u003e\n  \u003cli\u003eConnect the 24 V DC power supply and ground conductors to the designated terminals, observing correct polarity and fuse ratings (≤ 10 A).\u003c\/li\u003e\n  \u003cli\u003eConnect the PROFINET network cables to the RJ45 ports using category 5 cables for 100 Mbit\/s operation.\u003c\/li\u003e\n  \u003cli\u003eAttach downstream Bus Terminals via the internal K-bus connector, ensuring physical locking mechanisms are engaged.\u003c\/li\u003e\n  \u003cli\u003eVerify network parameters, configuration settings, and potential distribution groups prior to system power-up.\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"BECKHOFF","offers":[{"title":"Default Title","offer_id":53106454364523,"sku":"BK9103","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0953\/3227\/0443\/files\/bk9103-pte4lz2znag.png?v=1776243477","url":"https:\/\/www.plcprotech.com\/products\/beckhoff-bk9103-profinet-bus-coupler","provider":"PLC ProTech Ltd.","version":"1.0","type":"link"}