{"product_id":"allen-bradley-1747-l551b-modular-processor-unit","title":"Allen-Bradley 1747-L551B Modular Processor Unit","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eAllen-Bradley 1747-L551B\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eis a high-performance\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003emodular processor\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eengineered for demanding industrial automation applications.\u003c\/p\u003e\n\u003cp\u003eWith\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e16 KB user memory\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eand flash backup, it stores complex control programs while maintaining system reliability.\u003c\/p\u003e\n\u003cp\u003eThe module supports\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eRS-232 ports\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eand\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eEtherNet communication\u003c\/strong\u003e, ensuring seamless integration with existing control networks.\u003c\/p\u003e\n\u003cp\u003eIts compact design (145 × 35 × 142 mm) and\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eopen-type enclosure\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eallow flexible chassis mounting while minimizing space requirements.\u003c\/p\u003e\n\u003cp\u003eFeaturing\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003estatus LEDs\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eand diagnostic capabilities, the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1747-L551B\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eprovides intuitive monitoring and proactive maintenance options.\u003c\/p\u003e\n\u003cp\u003eThe processor achieves\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003efast execution speeds\u003c\/strong\u003e, with typical scan time of 0.9 ms\/Kword, bit execution of 0.37 μs, and I\/O scan of 0.255 ms, enabling real-time control.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eTechnical Specifications\u003c\/strong\u003e\u003c\/h3\u003e\n\u003ctable class=\"w-fit min-w-(--thread-content-width)\"\u003e\n\u003cthead\u003e\n\u003ctr class=\"firstRow\"\u003e\n\u003cth\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eDetails\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eManufacturer\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAllen-Bradley\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e1747-L551B\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eType\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eModular Processor Unit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMemory\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e16 KB User Memory\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBackup\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFlash\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCommunication\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRS-232 Ports, EtherNet\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutput (Backplane)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1 mA at 5 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTypical Scan Time\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.9 ms\/Kword\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBit Execution Time\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.37 μs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eI\/O Scan Time\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.255 ms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProgramming Software\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRSLogix™ 5000\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEnclosure\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eOpen Type\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDisplay\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eStatus LEDs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions (L×W×H)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e145 × 35 × 142 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating Temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0 – 60°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEnvironmental Conditions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e5–95% non-condensing humidity, 30 G shock, 2.5 G vibration\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMounting\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eChassis\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eHigh-Speed Performance:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eExecutes control tasks rapidly with minimal latency.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eRobust Communication:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eRS-232 and EtherNet connectivity ensures seamless integration.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eDurable Construction:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eOpen-type enclosure withstands industrial environmental stress.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCompact Footprint:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eEasily mounts in chassis without occupying excess space.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eAdvanced Diagnostics:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eStatus LEDs and built-in monitoring improve reliability.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eApplications\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eManufacturing Automation:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eIdeal for assembly lines and process control systems.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eEnergy Management:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eSupports control in power distribution and energy-intensive applications.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eMaterial Handling:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eEnhances precision in conveyor and sorting systems.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eLegacy System Integration:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eCompatible with existing Allen-Bradley control architectures.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eFAQ\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ1: Is the 1747-L551B module original Allen-Bradley?\u003c\/strong\u003e\u003cbr\u003eYes, the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1747-L551B\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eis\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e100% new and factory-original\u003c\/strong\u003e, ensuring high reliability.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ2: What is the memory capacity of this module?\u003c\/strong\u003e\u003cbr\u003eIt provides\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e16 KB of user memory\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ewith flash backup for program retention.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ3: Which communication interfaces are available?\u003c\/strong\u003e\u003cbr\u003eThe module supports\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eRS-232 serial ports\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eand\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eEtherNet communication\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ4: Can it handle extreme environmental conditions?\u003c\/strong\u003e\u003cbr\u003eYes, it operates in\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e0–60°C\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ewith 5–95% humidity and withstands vibration and shock.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ5: How long does shipping usually take?\u003c\/strong\u003e\u003cbr\u003eDelivery typically ranges from\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e3 days to 2 weeks\u003c\/strong\u003e, depending on order size, via\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eDHL\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eor similar logistics.\u003c\/p\u003e","brand":"Allen Bradley","offers":[{"title":"Default Title","offer_id":50821959680296,"sku":"1747-L551B","price":521.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0827\/6266\/2184\/files\/1747-L551B1.jpg?v=1760087463","url":"https:\/\/www.powerdcs.com\/products\/allen-bradley-1747-l551b-modular-processor-unit","provider":"Power DCS Parts Limited","version":"1.0","type":"link"}