{"product_id":"allen-bradley-1756-l61-controllogix-5561-cpu-module","title":"Allen-Bradley 1756-L61 ControlLogix 5561 CPU Module","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1756-L61\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eserves as a core processing unit for the Allen-Bradley ControlLogix 5561 automation platform. This CPU module executes high-speed logic, manages complex motion control, and facilitates seamless data synchronization across the ControlLogix backplane. It handles intensive computational tasks for medium-to-large scale industrial applications. We offer this unit as\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e100% Brand New\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eoriginal stock, providing a high-integrity solution for facilities maintaining existing ControlLogix architectures.\u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cp\u003eThe 1756-L61 delivers precise control through the following hardware parameters:\u003c\/p\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eController Series:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eControlLogix 5561\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eUser Memory:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e2 MB\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCurrent Draw (Backplane):\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e1.2 Amps at 5.1 VDC\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCurrent Draw (Backplane):\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e14 mA at 24 VDC\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eMounting Style:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eChassis\/Rack Mount (any slot)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eOperating Voltage:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e24 VDC\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eWeight:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e0.71 lbs (0.32 kg)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eI\/O Capacity:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eSupports up to 128,000 digital I\/O points\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eEngineering Advantages\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eSeamless Legacy Integration:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThis module allows plants to maintain existing systems without requiring a full platform migration to L7 or L8 series controllers. It ensures code compatibility and minimal downtime during hardware replacement.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eHigh-Speed Execution:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe 32-bit RISC processor performs logic operations with millisecond precision. This speed optimizes cycle times for high-speed packaging, automotive assembly, and complex material handling systems.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eFlexible Communication Pathing:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe 1756-L61 communicates across the backplane to EtherNet\/IP, ControlNet, and DeviceNet bridges. It routes data efficiently between the supervisory level and field-level devices without taxing the main CPU task.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eNon-Volatile Memory Support:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe module utilizes CompactFlash cards for non-volatile storage. This feature protects your user program and tag data against power loss, eliminating the need for constant battery dependency during long-term storage or maintenance.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFAQs\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eIs the 1756-L61 provided as a brand new original unit despite being discontinued?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes. We supply this module as\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e100% Brand New\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eoriginal factory stock. Each unit remains in its original packaging, ensuring full electronic integrity and performance as specified by the manufacturer.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eDoes this CPU require a specific battery for memory backup?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes, the 1756-L61 requires a 1756-BA1 or 1756-BA2 lithium battery to maintain the user program in the volatile RAM during power cycles. We recommend checking battery voltage annually to prevent program loss.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCan I replace an L61 with the 1756-L71 suggested by the manufacturer?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe 1756-L71 serves as the official functional replacement. However, upgrading to an L71 requires Studio 5000\/Logix Designer version 20 or higher. Using a brand new 1756-L61 allows you to keep your current software version and hardware configuration exactly as designed.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eWhat are the installation requirements for the 1756-L61?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYou can install the 1756-L61 into any slot of a 1756 ControlLogix chassis. Ensure the chassis power supply (e.g., 1756-PA72) provides sufficient current for the 1.2 Amp draw of the CPU and all associated I\/O modules.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Allen Bradley","offers":[{"title":"Default Title","offer_id":53276783673528,"sku":"1756-L61","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0935\/6132\/3704\/files\/1756-L61.jpg?v=1775639632","url":"https:\/\/www.globalpetroparts.com\/products\/allen-bradley-1756-l61-controllogix-5561-cpu-module","provider":"Global Petro Parts Automation","version":"1.0","type":"link"}