{"product_id":"1756-l73-allen-bradley-controllogix-5570-pac-controller-module","title":"1756-L73 Allen-Bradley ControlLogix 5570 PAC Controller Module","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003e\u003cspan style=\"color: #004b87;\"\u003e1756-L73\u003c\/span\u003e\u003c\/strong\u003e is a high-performance Programmable Automation Controller (PAC) belonging to the \u003ca href=\"https:\/\/www.plcsparehub.com\/collections\/allen-bradley-1756-controllogix\"\u003e\u003cstrong\u003e\u003cspan style=\"color: #004b87;\"\u003eControlLogix\u003c\/span\u003e\u003c\/strong\u003e\u003c\/a\u003e 5570 product category. Engineered for large-scale factory automation and complex process applications, this processor supports both simplex and high-availability redundant topologies. It features 8 Megabytes of user memory and 0.98 Megabytes of dedicated I\/O memory. Utilizing integrated energy storage technology, the \u003cstrong\u003e\u003cspan style=\"color: #004b87;\"\u003e1756-L73\u003c\/span\u003e\u003c\/strong\u003e eliminates the need for lithium batteries to retain volatile memory contents during power cycles.\u003c\/p\u003e\n\u003ch3\u003eGlobal PLC Spare HUB Insight\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003e\u003cspan style=\"color: #004b87;\"\u003e\u003ca href=\"https:\/\/www.plcsparehub.com\/collections\/allen-bradley-1756-controllogix\"\u003eControlLogix\u003c\/a\u003e 1756-L73\u003c\/span\u003e\u003c\/strong\u003e is a cornerstone of mid-to-large tier Rockwell Automation architectures. By separating user execution memory from I\/O processing space, it sustains fast scan times even when handling high-density communication tasks. Its native USB 2.0 port significantly reduces commissioning time compared to legacy serial interfaces, enabling rapid firmware flashing and diagnostic access. This module represents a reliable long-term asset for plants transitioning away from older hardware generations without rewriting legacy logic.\u003c\/p\u003e\n\u003ch3\u003eTarget Equipment Compatibility\u003c\/h3\u003e\n\u003cp\u003eThis processor installs directly into any standard or corrosion-resistant \u003cstrong\u003e\u003cspan style=\"color: #004b87;\"\u003eControlLogix\u003c\/span\u003e\u003c\/strong\u003e chassis:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eStandard Chassis Series: 1756-A4, 1756-A7, 1756-A10, 1756-A13, 1756-A17\u003c\/li\u003e\n\u003cli\u003eConformal Coated K-Chassis Variants: 1756-A4K, 1756-A7K, 1756-A10K, 1756-A13K, 1756-A17K\u003c\/li\u003e\n\u003cli\u003eStandard Power Units: \u003ca href=\"https:\/\/www.ubestplc.com\/products\/allen-bradley-1756-pa50-controllogix-ac-power-supply\"\u003e1756-PA50\u003c\/a\u003e, \u003ca href=\"https:\/\/www.ubestplc.com\/products\/1756-pa72-controllogix-ac-power-supply-allen-bradley\"\u003e1756-PA72\u003c\/a\u003e, \u003ca href=\"https:\/\/www.ubestplc.com\/products\/allen-bradley-1756-pa75-controllogix-ac-power-supply\"\u003e1756-PA75\u003c\/a\u003e, 1756-PB50, 1756-PB72, 1756-PB75, 1756-PH75\u003c\/li\u003e\n\u003cli\u003eRedundant Power Systems: 1756-PA75R, 1756-PA75RK, 1756-PB75R, 1756-PB75RK, 1756-PSCA2, 1756-PSCA2K\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Allen-Bradley \/ Rockwell Automation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel Number:\u003c\/strong\u003e \u003cstrong\u003e\u003cspan style=\"color: #004b87;\"\u003e1756-L73\u003c\/span\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eController Series:\u003c\/strong\u003e \u003cstrong\u003e\u003cspan style=\"color: #004b87;\"\u003eControlLogix\u003c\/span\u003e\u003c\/strong\u003e 5570\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModule Type:\u003c\/strong\u003e Central Processing Unit (CPU)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUser Application Memory:\u003c\/strong\u003e 8 Megabytes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eI\/O Memory Allocation:\u003c\/strong\u003e 0.98 Megabytes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTotal Digital I\/O Capacity:\u003c\/strong\u003e 128,000 signals maximum\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTotal Analog I\/O Capacity:\u003c\/strong\u003e 4,000 signals maximum\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTask Architecture:\u003c\/strong\u003e 32 concurrent execution tasks\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProgram Capacity:\u003c\/strong\u003e 100 applications per individual task\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLocal Interface:\u003c\/strong\u003e One USB 2.0 port operating at 12 Mbps full speed\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSupported Networks:\u003c\/strong\u003e EtherNet\/IP, ControlNet, DeviceNet, SynchLink, DH+, Remote I\/O (RIO)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntegrated Motion:\u003c\/strong\u003e Supports SERCOS, analog motion, and CIP Motion over EtherNet\/IP\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProgramming Languages:\u003c\/strong\u003e Ladder Diagram (LD), Structured Text (ST), Function Block Diagram (FBD), Sequential Function Chart (SFC)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBackplane Current Draw (5.1V DC):\u003c\/strong\u003e 800 mA\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBackplane Current Draw (1.2V DC):\u003c\/strong\u003e 5 mA\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower Dissipation:\u003c\/strong\u003e 2.5 Watts\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThermal Dissipation:\u003c\/strong\u003e 8.5 BTU per hour\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eContinuous Isolation Voltage:\u003c\/strong\u003e 30 Volts continuous (basic insulation type)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDielectric Test Rating:\u003c\/strong\u003e 500V AC for 60 seconds duration\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWiring Category:\u003c\/strong\u003e Category 3 on USB port paths\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePhysical Width:\u003c\/strong\u003e Single-slot form factor\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnclosure Rating:\u003c\/strong\u003e Open-style construction (0.25 kg net weight)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperating Ambient Temperature:\u003c\/strong\u003e 32 to 140 degrees Fahrenheit (0 to 60 degrees Celsius)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStorage Temperature Range:\u003c\/strong\u003e -40 to 185 degrees Fahrenheit (-40 to 85 degrees Celsius)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRelative Humidity Range:\u003c\/strong\u003e 5 to 95 percent non-condensing levels\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperating Vibration Resistance:\u003c\/strong\u003e 2 g acceleration at 10 to 500 Hz frequency\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperating Shock Rating:\u003c\/strong\u003e 30 g peak force\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNon-Operating Shock Limit:\u003c\/strong\u003e 50 g peak force (45 g with Secure Digital card inserted)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eDiagnostic \u0026amp; Fault Management Capabilities\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eIntegrated execution engine tracks onboard tasks and registers event triggers.\u003c\/li\u003e\n\u003cli\u003eThe processing unit performs continuous background memory integrity checks.\u003c\/li\u003e\n\u003cli\u003eStatus metrics report communication health over local backplane networks.\u003c\/li\u003e\n\u003cli\u003eHardware registers capture specific program fault traps immediately.\u003c\/li\u003e\n\u003cli\u003eReal-time operational diagnostics stream directly via the built-in USB portal.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTypical Process Scenarios\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eHigh-axis coordinated motion control loops across automated assembly lines.\u003c\/li\u003e\n\u003cli\u003eLarge-scale distributed remote I\/O management in wastewater facilities.\u003c\/li\u003e\n\u003cli\u003eHot-standby redundant control configurations within power generation applications.\u003c\/li\u003e\n\u003cli\u003eSpecialized oil and gas pipeline data concentration across legacy fieldbuses.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eProcurement \u0026amp; Selection Guidance\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eVerify that your application logic and tag databases do not exceed the 8MB memory threshold.\u003c\/li\u003e\n\u003cli\u003eChoose this controller if your safety or uptime specifications demand hardware redundancy.\u003c\/li\u003e\n\u003cli\u003eEnsure you possess Studio 5000 Logix Designer software compatible with 5570 hardware.\u003c\/li\u003e\n\u003cli\u003eSelect matching K-prefix parts if your environment requires conformal coating protection.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eLogistics, Delivery \u0026amp; Warranty Terms\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDispatch Window:\u003c\/strong\u003e Orders process and dispatch within 24 to 48 hours following payment confirmation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShipping Carriers:\u003c\/strong\u003e Express global transport managed by FedEx, UPS, and DHL Express.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty Coverage:\u003c\/strong\u003e Includes a comprehensive 12-month industrial performance warranty starting from the ship date.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eHow does the battery-less energy storage module function on this processor during extended outages?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe integrated capacitor structure charges automatically from backplane power during normal system operation. Upon main power loss, this stored charge provides enough energy to copy volatile execution memory into onboard non-volatile flash storage safely.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan this unit reside alongside legacy modules in an older 1756 series backplane?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes, the processor works within all standard 1756 chassis options. However, you must verify that the installed power supply meets the specific dual-voltage requirement of 800 mA at 5.1V DC and 5 mA at 1.2V DC.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the practical impact of having 0.98 MB of dedicated I\/O memory separated from user memory?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis dual-zone design ensures that heavy network traffic or large I\/O configurations do not consume the memory space needed for application code execution. It stabilizes scan times and prevents program crashes caused by memory allocation overflows.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhich firmware version is required to implement redundancy with this module?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eRedundant topologies require specific enhanced redundancy firmware bundles inside Studio 5000. You must reference the Rockwell Product Compatibility and Download Center (PCDC) to match your exact hardware series with the certified redundancy revision.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs an external Secure Digital card required for the system to execute its program loops?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eNo, the controller executes programs directly out of its internal volatile memory space. The optional industrial SD card serves as a non-volatile backup for manual firmware loads or user code restoration when servicing field equipment.\u003c\/p\u003e","brand":"Schneider Electric","offers":[{"title":"Default Title","offer_id":45014037463222,"sku":"1756-L73","price":115.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0722\/7863\/8774\/files\/1756-L73.jpg?v=1783592211","url":"https:\/\/www.plcsparehub.com\/products\/1756-l73-allen-bradley-controllogix-5570-pac-controller-module","provider":"Global PLC Spare Hub","version":"1.0","type":"link"}