{"product_id":"beckhoff-bk5151-bus-coupler-canopen-compact-module","title":"Beckhoff BK5151 Bus Coupler CANopen Compact Module","description":"\u003ch3\u003eDescription\u003c\/h3\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eIntegrating standard K-bus I\/O terminals into high-speed CANopen fieldbus networks, the Beckhoff BK5151 offers a compact, cost-efficient interface solution. This unit acts as a gateway, mapping standard terminal signal channels to the CANopen communication layer and process image. The complete \u003cstrong\u003eBeckhoff BK5151\u003c\/strong\u003e system supports automatic baud rate configuration and diagnostic feedback, ensuring seamless integration into distributed control systems.\u003c\/p\u003e\n\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul style=\"list-style-type: square; color: #2d3748; padding-left: 20px; margin-bottom: 1.5rem;\"\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlexible Expansion:\u003c\/strong\u003e Connects up to 64 local Bus Terminals, with support for up to 255 terminals via K-bus extension units.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh-Speed Communication:\u003c\/strong\u003e Automatic baud rate detection supports transmission speeds reaching up to 1 Mbaud.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRobust K-Bus Power Supply:\u003c\/strong\u003e Generates up to 1750 mA of current output for internal electronics of connected terminals.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRich CANopen Services:\u003c\/strong\u003e Fully supports emergency objects, variable mapping, Node Guarding, Life Guarding, and store\/restore options.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eConfigurable Transfer Modes:\u003c\/strong\u003e Supports synchronous, cyclic, event-driven, and polling-based PDO modes.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul style=\"list-style-type: square; color: #2d3748; padding-left: 20px; margin-bottom: 1.5rem;\"\u003e\n  \u003cli\u003eDecentralized factory automation and plant control systems.\u003c\/li\u003e\n  \u003cli\u003eHazardous environments requiring ATEX and IECEx Zone 2 intrinsic safety ratings.\u003c\/li\u003e\n  \u003cli\u003eMaterial handling and machine building environments using centralized CANopen masters.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cdiv style=\"overflow-x: auto; width: 100%; margin-bottom: 1.5rem;\"\u003e\n  \u003ctable style=\"border-collapse: collapse; width: 100%; color: #2d3748; border: 1px solid #e2e8f0;\"\u003e\n    \u003cthead\u003e\n      \u003ctr style=\"border-bottom: 2px solid #cbd5e0;\"\u003e\n        \u003cth style=\"padding: 10px; text-align: left; font-weight: bold; border-right: 1px solid #e2e8f0;\"\u003eParameter\u003c\/th\u003e\n        \u003cth style=\"padding: 10px; text-align: left; font-weight: bold;\"\u003eSpecification\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold; border-right: 1px solid #e2e8f0;\"\u003eManufacturer\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eBeckhoff\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold; border-right: 1px solid #e2e8f0;\"\u003eModel \/ SKU\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eBK5151\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold; border-right: 1px solid #e2e8f0;\"\u003eFieldbus Protocol\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eCANopen\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold; border-right: 1px solid #e2e8f0;\"\u003eBus Interface Connection\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003e9-pin D-sub socket\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold; border-right: 1px solid #e2e8f0;\"\u003eBaud Rate\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eUp to 1 Mbaud (automatic detection)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold; border-right: 1px solid #e2e8f0;\"\u003eNumber of Bus Terminals\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003e64 (up to 255 with K-bus extension)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold; border-right: 1px solid #e2e8f0;\"\u003eInternal K-Bus Current\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003e1750 mA\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold; border-right: 1px solid #e2e8f0;\"\u003ePower Supply Voltage\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003e24 V DC (-15% \/ +20%)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold; border-right: 1px solid #e2e8f0;\"\u003eDiagnostic LEDs\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003e2 x power supply, 2 x K-bus, 2 x fieldbus\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold; border-right: 1px solid #e2e8f0;\"\u003eProtection Rating\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eIP20\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold; border-right: 1px solid #e2e8f0;\"\u003eOperating Temperature Range\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003e-25 to +60 degC\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold; border-right: 1px solid #e2e8f0;\"\u003eStorage Temperature Range\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003e-40 to +85 degC\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold; border-right: 1px solid #e2e8f0;\"\u003eHazardous Area Certifications\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eATEX: II 3G Ex ec IIC T4 Gc \/ IECEx: Ex ec IIC T4 Gc\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold; border-right: 1px solid #e2e8f0;\"\u003eNet Weight\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003e100 g\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold; border-right: 1px solid #e2e8f0;\"\u003eShipping Weight (Calculated)\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003e1.0 kg\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch3\u003eEmpirical Engineering Insights\u003c\/h3\u003e\n\u003ch4\u003eAlternative Models \u0026amp; Compatibility\u003c\/h4\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eThe BK5151 replaces older BK5120 couplers in typical architectures. However, configure your software environments carefully: any hardware modifications or firmware transitions from standard BK series to the compact \"BK5151\" require an updated EDS (Electronic Datasheet) file imported directly into your CANopen master configuration utility to correctly register the updated device ID and dynamic mapping options.\u003c\/p\u003e\n\n\u003ch4\u003eApplication Pitfalls \u0026amp; Engineering Notes\u003c\/h4\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eWhen sizing your system, calculate the total current consumption of the connected K-bus terminals. Although the integrated power unit outputs 1750 mA, exceeding this threshold will trigger a K-bus undervoltage alarm, interrupting communication. If your I\/O array draws higher currents, insert a PE2001 power feed terminal downstream on the rail to supply supplemental voltage.\u003c\/p\u003e\n\n\u003ch4\u003eCommissioning \u0026amp; Wiring Tips\u003c\/h4\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eAlways ensure that both physical ends of the CANopen network bus segment are terminated with a standard 120-Ohm resistor connected between CAN-H (pin 7) and CAN-L (pin 2). Omission of physical termination is a primary cause of packet collisions, CRC errors, and intermittent bus-off states. Use only double-shielded twisted pair copper media for field connections.\u003c\/p\u003e\n\n\u003ch3\u003eInstallation Guidelines\u003c\/h3\u003e\n\u003cdiv style=\"background-color: #fff5f5; border-left: 4px solid #c53030; padding: 1rem; margin-bottom: 1.5rem; color: #9b2c2c;\"\u003e\n  \u003cstrong\u003eCRITICAL WARNING:\u003c\/strong\u003e Completely isolate and lock out all 24 V DC power supplies prior to mounting, connecting, or disconnecting the coupler. Live hot-plugging of the local K-bus terminals can cause physical hardware damage and electrical system instability.\n\u003c\/div\u003e\n\n\u003cdiv style=\"display: flex; align-items: center; margin-bottom: 1rem;\"\u003e\n  \u003cdiv style=\"background-color: #2b6cb0; color: #ffffff; width: 30px; height: 30px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: bold; margin-right: 15px; flex-shrink: 0;\"\u003e1\u003c\/div\u003e\n  \u003cdiv style=\"color: #2d3748;\"\u003eMount the BK5151 unit firmly onto a standard 35 mm DIN rail (EN 60715) with vertical orientation for optimal heat dissipation.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"display: flex; align-items: center; margin-bottom: 1rem;\"\u003e\n  \u003cdiv style=\"background-color: #2b6cb0; color: #ffffff; width: 30px; height: 30px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: bold; margin-right: 15px; flex-shrink: 0;\"\u003e2\u003c\/div\u003e\n  \u003cdiv style=\"color: #2d3748;\"\u003eAssemble the subsequent K-bus terminals onto the right side of the coupler unit, ensuring all physical mechanical and electrical side-locking tabs align and snap together securely.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"display: flex; align-items: center; margin-bottom: 1rem;\"\u003e\n  \u003cdiv style=\"background-color: #2b6cb0; color: #ffffff; width: 30px; height: 30px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: bold; margin-right: 15px; flex-shrink: 0;\"\u003e3\u003c\/div\u003e\n  \u003cdiv style=\"color: #2d3748;\"\u003eConnect the 9-pin D-sub CAN interface, apply termination resistors if the unit is located at the physical ends of the line, and plug in the 24 V DC auxiliary feed wiring.\u003c\/div\u003e\n\u003c\/div\u003e","brand":"BECKHOFF","offers":[{"title":"Default Title","offer_id":53106530877803,"sku":"BK5151","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0953\/3227\/0443\/files\/bk5151-ibj3qj3bylc.png?v=1776243460","url":"https:\/\/www.plcprotech.com\/products\/beckhoff-bk5151-bus-coupler-canopen-compact-module","provider":"PLC ProTech Ltd.","version":"1.0","type":"link"}