{"product_id":"beckhoff-kl6841-bus-terminal","title":"BECKHOFF KL6841 Bus Terminal","description":"\u003ch3\u003eDescription\u003c\/h3\u003e\n\u003cp\u003eThe BECKHOFF KL6841 Bus Terminal is a specialized SMI (Standard Motor Interface) master terminal designed for integration into Beckhoff K-bus modular I\/O systems. This single-channel terminal enables the direct connection and control of up to 16 SMI slaves, such as shutter and blind drives, via a standard two-wire line topology. Operating as a dedicated communication interface, the device manages data exchange at a transfer rate of 2400 baud over cable lengths of up to 200 meters, allowing precise positioning and status monitoring within building automation and industrial shading applications.\u003c\/p\u003e\n\u003cp\u003eThe terminal features integrated power management for the connected field devices, supporting an SMI system voltage of 230 V AC and a nominal input voltage of 24 V DC for internal electronics. Additionally, the KL6841 includes two onboard digital inputs intended to facilitate simplified local commissioning and manual override functions. Integration into the control system is handled via the higher-level Bus Coupler or controller, utilizing the dedicated TwinCAT PLC SMI library for streamlined engineering and parameterization.\u003c\/p\u003e\n\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eSingle-channel SMI master interface for up to 16 Standard Motor Interface slaves\u003c\/li\u003e\n  \u003cli\u003eSupports line topology with a maximum cable length of 200 meters at 2400 baud\u003c\/li\u003e\n  \u003cli\u003eIntegrated SMI system supply at 230 V AC for connected drives\u003c\/li\u003e\n  \u003cli\u003eEquipped with 2 digital inputs for simplified local commissioning\u003c\/li\u003e\n  \u003cli\u003eProcess image bit width of 24 bytes for input and output data exchange\u003c\/li\u003e\n  \u003cli\u003eRobust electrical isolation between the SMI bus, K-bus, and power contacts\u003c\/li\u003e\n  \u003cli\u003eConfigurable via the higher-level Bus Coupler or controller using TwinCAT PLC libraries\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eBuilding automation and commercial real estate management\u003c\/li\u003e\n  \u003cli\u003eCentralized and decentralized control of motorized blinds, roller shutters, and sun protection systems\u003c\/li\u003e\n  \u003cli\u003eEnergy-efficient facade automation integrated into Beckhoff control architectures\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\u003eKL6841\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eProduct Type\u003c\/td\u003e\n      \u003ctd\u003eBus Terminal\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eTechnology\u003c\/td\u003e\n      \u003ctd\u003eSMI (Standard Motor Interface)\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eCountry of Origin\u003c\/td\u003e\n\u003ctd\u003eGermany\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch4\u003eSignal and I\/O\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\u003eNumber of Channels\u003c\/td\u003e\n      \u003ctd\u003e1\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eNumber of Slaves\u003c\/td\u003e\n      \u003ctd\u003eUp to 16 SMI slaves\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eDigital Inputs\u003c\/td\u003e\n      \u003ctd\u003e2 inputs for simplified commissioning\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eBit Width in Process Image\u003c\/td\u003e\n      \u003ctd\u003eInput\/output: 24 bytes\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch4\u003eElectrical and Communication\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\u003eData Transfer Standard\u003c\/td\u003e\n      \u003ctd\u003eSMI\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eData Transfer Rate\u003c\/td\u003e\n      \u003ctd\u003e2400 baud\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eTopology\u003c\/td\u003e\n      \u003ctd\u003eLine topology\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eMax. Cable Length\u003c\/td\u003e\n      \u003ctd\u003e200 m\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eInput Voltage\u003c\/td\u003e\n      \u003ctd\u003e24 V DC (-15 % \/ +20 %)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eSMI System Voltage\u003c\/td\u003e\n      \u003ctd\u003e230 V AC\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eCurrent Consumption K-Bus\u003c\/td\u003e\n      \u003ctd\u003eTyp. 55 mA\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eElectrical Isolation\u003c\/td\u003e\n      \u003ctd\u003e500 V (K-bus \/ SMI-bus)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eInsulation Voltage\u003c\/td\u003e\n      \u003ctd\u003eSMI bus \/ K-bus: 1,500 V DC; SMI bus \/ power contacts: 1,500 V AC\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. 80 g\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eOperating Temperature Range\u003c\/td\u003e\n      \u003ctd\u003e0 to +55 degC\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eStorage Temperature Range\u003c\/td\u003e\n      \u003ctd\u003e-25 to +85 degC\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eRelative Humidity\u003c\/td\u003e\n      \u003ctd\u003e95 %, 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\u003c\/td\u003e\n      \u003ctd\u003eIP20\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eInstallation Position\u003c\/td\u003e\n      \u003ctd\u003eVariable\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eApprovals\u003c\/td\u003e\n      \u003ctd\u003eCE\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 the entire control system is de-energized and locked out before beginning installation or wiring work.\u003c\/li\u003e\n  \u003cli\u003eInspect the BECKHOFF KL6841 Bus Terminal and its housing for any signs of transport damage.\u003c\/li\u003e\n  \u003cli\u003eMount the terminal onto the 35 mm DIN rail adjacent to the appropriate Bus Coupler or existing K-bus terminals, ensuring a secure mechanical lock.\u003c\/li\u003e\n  \u003cli\u003eVerify that the K-bus connections and power contacts interlock correctly with neighboring modules.\u003c\/li\u003e\n  \u003cli\u003eConnect the SMI line topology and field power supplies in accordance with the application wiring requirements, maintaining proper shielding and separation between low-voltage control circuits and the 230 V AC SMI network.\u003c\/li\u003e\n  \u003cli\u003eApply system power and verify operation using the diagnostic indicators and the TwinCAT software environment.\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"BECKHOFF","offers":[{"title":"Default Title","offer_id":53106513740139,"sku":"KL6841","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0953\/3227\/0443\/files\/kl6841-jzvvqvgcvir.png?v=1776245216","url":"https:\/\/www.plcprotech.com\/products\/beckhoff-kl6841-bus-terminal","provider":"PLC ProTech Ltd.","version":"1.0","type":"link"}