{"product_id":"1756-l55-rockwell-automation-plc-processor-factory-sealed","title":"1756-L55 Rockwell Automation PLC Processor Factory Sealed","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eAllen-Bradley 1756-L55\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e(Logix5555) serves as the powerhouse for mid-to-large scale automation within the ControlLogix platform. This processor executes complex control engine tasks, managing high-speed I\/O and communication across EtherNet\/IP, ControlNet, and DeviceNet networks. By utilizing a multi-tasking operating system, it optimizes scan times for both discrete and process applications. We offer this unit as\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e100% Brand New and Original\u003c\/strong\u003e, typically featuring the M13 memory expansion to ensure robust program storage and data logging capabilities right out of the box.\u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr class=\"firstRow\"\u003e\n\u003ctd\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eTechnical Details\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eUser Memory\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e512 KB (Standard, Expandable via Memory Cards)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eBackplane Current (5.1V DC)\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e1.23 to 1.25 Amps\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eBackplane Current (24V DC)\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e0.014 Amps\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003ePower Dissipation\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e5.6 to 5.7 Watts\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eThermal Dissipation\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e19.1 to 19.4 BTU\/hr\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eIsolation Voltage\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e30V Continuous (Basic Insulation Type)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eRF Immunity (Conducted)\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e10V rms with 1 kHz sine-wave (IEC 61000-4-6)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eTemperature Code\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eT4A (North American) \/ T4 (IEC)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eBattery Type\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e1756-BA1 (0.59 g Lithium)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eOperating Temperature\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e0 to 60 °C (32 to 140 °F)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eProduct Net Weight\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e0.34 kg (0.75 lbs)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eShipping Weight\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e2.00 kg (Securely packed for logistics)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eEngineering Advantages\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eScalable Memory Architecture:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe 1756-L55 supports modular memory expansion. This allows engineers to scale the controller’s capacity to match increasing code complexity without replacing the entire CPU, significantly protecting your hardware investment as the plant grows.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eSuperior Noise \u0026amp; RF Immunity:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eBuilt for harsh electromagnetic environments, this processor withstands conducted RF interference up to 10V rms. This high level of immunity prevents logic errors and unexpected shutdowns caused by proximity to variable frequency drives (VFDs) and high-power radio equipment.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eEfficient Thermal Management:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eDissipating only 19.4 BTU\/hr, the 1756-L55 maintains a low thermal footprint. This efficiency reduces the cooling requirements of your control cabinet, extending the lifespan of adjacent I\/O and communication modules.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eBroad Network Integration:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe Logix5555 architecture bridges disparate networks seamlessly. By adding 1756-series communication modules, the L55 controller coordinates data between factory-floor DeviceNet sensors and enterprise-level EtherNet\/IP systems simultaneously.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFAQs\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhat battery does the 1756-L55 require for data retention?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe 1756-L55 uses the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1756-BA1\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003elithium battery. This battery maintains the user program and tag data in the internal SRAM during power-down cycles. We recommend replacing the battery every 1–2 years as part of preventative maintenance to avoid program loss.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan the 1756-L55 handle Motion Control?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes. When paired with 1756-series SERCOS or analog motion modules, the 1756-L55 executes complex motion instructions. It handles geared moves, cams, and coordinated linear\/circular interpolation, making it suitable for packaging and assembly machinery.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs the 1756-L55 compatible with newer Studio 5000 software?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe 1756-L55 is an established \"Logix5555\" controller. It typically supports RSLogix 5000 software up to\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eVersion 16\u003c\/strong\u003e. For systems requiring higher firmware versions (v17–v35+), we recommend upgrading to the 1756-L7 or L8 series processors. However, the L55 remains the standard for maintaining and expanding thousands of existing operational lines worldwide.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow do I install the memory expansion card?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe memory card (such as the M13) installs directly into the side of the 1756-L55 processor. You must perform this installation while the module is removed from the chassis or with the chassis power turned off to prevent damage to the sensitive CMOS circuitry.\u003c\/p\u003e","brand":"Allen Bradley","offers":[{"title":"Default Title","offer_id":43359226331226,"sku":"1756-L55","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0710\/5957\/0778\/files\/9._0f96fb28-f162-435f-a1fd-cb88a129acd1.jpg?v=1778638219","url":"https:\/\/www.spareoil.com\/products\/1756-l55-rockwell-automation-plc-processor-factory-sealed","provider":"SpareOil Automation","version":"1.0","type":"link"}