{"product_id":"beckhoff-kl6904-twinsafe-logic-bus-terminal","title":"KL6904 | BECKHOFF | Terminal de bus","description":"\u003ch3\u003eDescription\u003c\/h3\u003e\n\u003cp\u003eIntegrated directly into decentralized control systems, the Beckhoff \u003cstrong\u003eKL6904\u003c\/strong\u003e TwinSAFE Logic Bus Terminal functions as an intelligent interface that establishes links between safe input and output signals. This safety-oriented terminal processes safety programs on-board, minimizing the overhead on the main control unit and optimizing localized response times. Utilizing the TwinSAFE protocol (Safety over EtherCAT\/K-bus), the module manages localized safety functions and coordinate actions securely across standard K-bus communication structures.\u003c\/p\u003e\n\n\u003cp\u003eThe \u003cstrong\u003eKL6904\u003c\/strong\u003e is designed to operate seamlessly within Beckhoff's standard I\/O environments, bridging physical safe inputs to its 4 built-in safe outputs. Certified for use in safety-critical sectors, this compact module provides a reliable mechanism to execute logic equations, monitor state conditions, and initiate fail-safe shutdowns within distributed industrial networks.\u003c\/p\u003e\n\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eOn-board processing of safety-relevant application logic.\u003c\/li\u003e\n  \u003cli\u003eSupports up to 4 safe, potential-free semiconductor outputs.\u003c\/li\u003e\n  \u003cli\u003eSeamless safety communication over standard K-bus pathways using TwinSAFE protocols.\u003c\/li\u003e\n  \u003cli\u003eParameterizable safety features including watchdog times and safety cycles (4 to 100 ms).\u003c\/li\u003e\n  \u003cli\u003eRobust cross-circuit and short-circuit monitoring of outputs.\u003c\/li\u003e\n  \u003cli\u003eSpace-saving 12 mm terminal housing with integrated status LEDs.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eDistributed machinery safety networks.\u003c\/li\u003e\n  \u003cli\u003eEmergency stop circuit evaluation and distribution.\u003c\/li\u003e\n  \u003cli\u003eLight curtain and safety gate interlocking control.\u003c\/li\u003e\n  \u003cli\u003eAutomated materials handling and conveyor safety systems.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eManufacturer\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003eBeckhoff Automation\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003ePart Number \/ Model\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003eKL6904\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eProduct Series\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003eTwinSAFE \/ Bus Terminal\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eConnection Technology\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003e2-wire\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eNumber of Outputs\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003e4 safe outputs\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eMaximum Output Current\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003e0.5 A per channel (minimum 20 mA)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eProtocol Support\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003eTwinSAFE \/ Safety over EtherCAT (via K-bus coupling)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eCycle Time\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003e4 ms to 100 ms (parameterizable)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eFault Response Time\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003eLess than or equal to the parameterized watchdog time\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eCurrent Consumption (K-bus)\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003eMax. 250 mA\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eCurrent Consumption (Power Contacts)\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003eLoad-dependent\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eSafety Standards Compliance\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003eDIN EN ISO 13849-1:2008 (Cat. 4, PL e) and EN 61508:2010 (SIL 3)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eProtection Rating\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003eIP20\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eEx Marking\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003eII 3 G Ex nA IIC T4 Gc (ATEX Zone 2)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eInstallation Position\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003eHorizontal\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003eApprox. 100 g\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eConnections and Interfaces\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n      \u003cth\u003eTerminal Connection Point\u003c\/th\u003e\n      \u003cth\u003eSignal Allocation \/ Function\u003c\/th\u003e\n    \u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e1\u003c\/td\u003e\n      \u003ctd\u003eSafe Output 1\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e2\u003c\/td\u003e\n      \u003ctd\u003eSafe Output 2\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e3\u003c\/td\u003e\n      \u003ctd\u003eSafe Output 3\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e4\u003c\/td\u003e\n      \u003ctd\u003eSafe Output 4\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e5\u003c\/td\u003e\n      \u003ctd\u003e0 V DC (Reference Potential)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e6\u003c\/td\u003e\n      \u003ctd\u003e0 V DC (Reference Potential)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e7\u003c\/td\u003e\n      \u003ctd\u003e+24 V DC Power Supply Contact\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e8\u003c\/td\u003e\n      \u003ctd\u003e0 V DC Power Supply Contact\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eInstallation Guidelines\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eEnsure all system power is disconnected prior to mounting or removing the terminal.\u003c\/li\u003e\n  \u003cli\u003eMount the module onto standard 35 mm DIN rails (EN 60715), pushing until the locking latch clicks firmly into place.\u003c\/li\u003e\n  \u003cli\u003eMaintain a horizontal mounting orientation to allow optimal passive convection cooling through the terminal vents.\u003c\/li\u003e\n  \u003cli\u003eEnsure grounding integrity is maintained via the integrated grounding contact point on the DIN rail.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCompliance and Certifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eCE\u003c\/li\u003e\n  \u003cli\u003eUL \/ cULus\u003c\/li\u003e\n  \u003cli\u003eATEX: II 3 G Ex nA IIC T4 Gc\u003c\/li\u003e\n  \u003cli\u003eDIN EN ISO 13849-1:2008 (Category 4, PL e)\u003c\/li\u003e\n  \u003cli\u003eEN 61508:2010 (SIL 3)\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"BECKHOFF","offers":[{"title":"Default Title","offer_id":53106472943979,"sku":"KL6904","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0953\/3227\/0443\/files\/kl6904-ywe00j3jfqc.png?v=1776245217","url":"https:\/\/www.plcprotech.com\/fr\/products\/beckhoff-kl6904-twinsafe-logic-bus-terminal","provider":"PLC ProTech Ltd.","version":"1.0","type":"link"}