{"product_id":"1769-crl3-cable-rockwell-automation-compactlogix-bus-extension-unit","title":"1769-CRL3 Cable Rockwell Automation CompactLogix Bus Extension Unit","description":"\u003ch3\u003eEngineering Overview\u003c\/h3\u003e\n\u003cp\u003eGlobal PLC Spare HUB's Insight: Expanding modular automation architectures requires reliable physical and electrical bus bridging to prevent communication drops across split I\/O banks. The \u003cb\u003eAllen-Bradley\u003c\/b\u003e \u003cb\u003e1769-CRL3\u003c\/b\u003e from the versatile \u003cb\u003eCompactLogix\u003c\/b\u003e series serves as a critical right-to-left expansion cable designed to link separate module banks and power supplies. Based on our field engineering experience, managing bus current draw and proper cable routing across multiple physical tiers prevents backplane voltage sags and ensures stable data packet transmission in complex machine control systems.\u003c\/p\u003e\n\n\u003ch3\u003ePhysical and Electrical Blueprint\u003c\/h3\u003e\n\u003cpre style=\"background-color: #f4f4f4; padding: 15px; border: 1px solid #ddd; font-family: monospace;\"\u003e\n+-----------------------------------------------------------------------+\n| ALLEN-BRADLEY 1769-CRL3 SYSTEM CONFIGURATION                          |\n+-----------------------------------------------------------------------+\n|  [+] Cable Length       : 1 meter (3.28 feet \/ 3-foot class)          |\n|  [+] Expansion Type     : Right bank-to-left bank horizontal\/vertical |\n|  [+] Enclosure Class    : Open-type industrial chassis requirement    |\n|  [+] Backplane Load     : 1.4 Amps at 24 Volts continuous draw        |\n+-----------------------------------------------------------------------+\n\u003c\/pre\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable border=\"1\" cellpadding=\"8\" cellspacing=\"0\" style=\"border-collapse: collapse; width: 100%;\"\u003e\n  \u003cthead\u003e\n    \u003ctr style=\"background-color: #f2f2f2;\"\u003e\n      \u003cth style=\"text-align: left;\"\u003eParameter Metric\u003c\/th\u003e\n      \u003cth style=\"text-align: left;\"\u003eOperating Value\u003c\/th\u003e\n    \u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cb\u003eManufacturer \/ Brand\u003c\/b\u003e\u003c\/td\u003e\n      \u003ctd\u003e\n\u003cb\u003eRockwell Automation\u003c\/b\u003e \/ \u003cb\u003eAllen-Bradley\u003c\/b\u003e\n\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cb\u003eModel \/ Part Number\u003c\/b\u003e\u003c\/td\u003e\n      \u003ctd\u003e\u003cb\u003e1769-CRL3\u003c\/b\u003e\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cb\u003eProduct Line \/ Type\u003c\/b\u003e\u003c\/td\u003e\n      \u003ctd\u003e\n\u003cb\u003eCompactLogix\u003c\/b\u003e \/ \u003cb\u003eExpansion Cable\u003c\/b\u003e\n\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eCompatible Series\u003c\/td\u003e\n      \u003ctd\u003eSeries A and B platforms\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eIsolation Voltage\u003c\/td\u003e\n      \u003ctd\u003e30 Volts Continuous\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003ePower Consumption\u003c\/td\u003e\n      \u003ctd\u003e33.6 Watts\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003ePower Dissipation\u003c\/td\u003e\n      \u003ctd\u003e7.5 Watts\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eOperating Temperature\u003c\/td\u003e\n      \u003ctd\u003e0°C to 60°C (32°F to 140°F)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eStorage Temperature\u003c\/td\u003e\n      \u003ctd\u003e-40°C to 85°C (-40°F to 185°F)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eOperating Humidity\u003c\/td\u003e\n      \u003ctd\u003e5% to 95% non-condensing\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eSupply Chain and Commercial Terms\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eCondition: Brand new and original in factory packaging.\u003c\/li\u003e\n  \u003cli\u003eFactory Warranty: Comprehensive 12-month coverage.\u003c\/li\u003e\n  \u003cli\u003eShipping Carriers: FedEx, UPS, DHL.\u003c\/li\u003e\n  \u003cli\u003eFulfillment Window: Fast dispatch within 24 to 48 hours of order clearance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTarget Equipment and Application Scenarios\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eDriveLogix 5730 Controller multi-bank expansion setups.\u003c\/li\u003e\n  \u003cli\u003eModular CompactLogix packaging lines requiring horizontal or vertical bank splitting.\u003c\/li\u003e\n  \u003cli\u003eLarge skid-mounted processing systems exceeding single power supply limits.\u003c\/li\u003e\n  \u003cli\u003eDistributed manufacturing cells requiring multi-tier I\/O enclosure layouts.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eDiagnostic Capabilities\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eTransmits backplane health status to the primary controller to flag communication timeouts.\u003c\/li\u003e\n  \u003cli\u003eWithstands industrial vibration profiles up to 5G (10-500 Hz) without connector micro-interruptions.\u003c\/li\u003e\n  \u003cli\u003eTolerates operational shock ratings up to 30G (panel-mounted) during heavy machinery shifting.\u003c\/li\u003e\n  \u003cli\u003eMaintains signal isolation integrity under 30V continuous rating requirements.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\n\u003cp\u003e\u003cb\u003eWhy is the maximum limit restricted to 2 expansion cables per CompactLogix system?\u003c\/b\u003e\u003cbr\u003e\nExceeding two expansion cables introduces excessive signal attenuation and backplane loading, which can disrupt communication timing packets between the processor and remote I\/O banks.\u003c\/p\u003e\n\n\u003cp\u003e\u003cb\u003eHow does changing from a DIN-rail to a panel-mounted setup affect the cable's shock tolerance?\u003c\/b\u003e\u003cbr\u003e\nPanel mounting increases physical rigidity, raising the operating shock threshold from 20G (DIN rail) to 30G, which helps protect connector pins in high-vibration environments.\u003c\/p\u003e\n\n\u003cp\u003e\u003cb\u003eWhat causes a backplane power fault when adding a 1769-CRL3 expansion cable?\u003c\/b\u003e\u003cbr\u003e\nA power fault usually occurs when the total current draw of the modules in the new bank exceeds the supply capacity, or when the 1.4 Amp backplane current limit at 24V is breached.\u003c\/p\u003e\n\n\u003cp\u003e\u003cb\u003eCan engineers mix horizontal and vertical physical bank orientations using this cable?\u003c\/b\u003e\u003cbr\u003e\nYes, the 1769-CRL3 supports both horizontal and vertical layout arrangements, offering mechanical flexibility to fit confined control cabinet enclosures.\u003c\/p\u003e\n\n\u003cp\u003e\u003cb\u003eWhat precautions should be taken regarding operating altitude limits?\u003c\/b\u003e\u003cbr\u003e\nThe cable is rated for reliable performance up to 6,561 feet (2,000 meters); installations above this threshold require derating calculations due to reduced air cooling density.\u003c\/p\u003e\n\n\u003ch3\u003eSelection Guide and Technical Comparison\u003c\/h3\u003e\n\u003cp\u003eSelecting the correct expansion cable length depends on the physical distance between your split I\/O enclosure banks. Compare the \u003cb\u003eAllen-Bradley\u003c\/b\u003e \u003cb\u003e1769-CRL3\u003c\/b\u003e with alternative configurations to optimize your cabinet layout.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003ca href=\"https:\/\/www.plcsparehub.com\/products\/1769-cr3-allen-bradley-compactlogix-right-to-left-expansion-cable\"\u003e1769-CR3\u003c\/a\u003e: Features a shorter 3-foot layout option tailored for tightly packed modular enclosures where bank separation is minimal.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":45013911044278,"sku":"1769-CRL3","price":175.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0722\/7863\/8774\/files\/1769-CRL3_33bd2d63-ff21-4bc9-ba37-a0ce8d83b0e1.jpg?v=1785314668","url":"https:\/\/www.plcsparehub.com\/products\/1769-crl3-cable-rockwell-automation-compactlogix-bus-extension-unit","provider":"Global PLC Spare Hub","version":"1.0","type":"link"}