{"product_id":"allen-bradley-1756-l55a-controllogix-5555-controller-module","title":"Allen-Bradley 1756-L55A ControlLogix 5555 Controller Module","description":"\u003ch3\u003eDescription\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eAllen-Bradley 1756-L55A\u003c\/strong\u003e is a high-performance ControlLogix 5555 programmable automation controller designed to handle demanding, high-capacity industrial control applications. As part of the established ControlLogix platform, this processor coordinates multi-tasking, high-speed motion, and complex discrete or process control tasks across a shared backplane. The module features integrated communication capabilities and requires a separately purchased non-volatile memory card to store user projects and data execution files.\u003c\/p\u003e\n\u003cp\u003eEngineered for mission-critical automation environments, the 1756-L55A operates seamlessly within standard 1756 chassis architectures. It supports modular system expansion, allowing seamless integration with a wide variety of digital I\/O, analog I\/O, and specialty communication modules. The controller is equipped with standard onboard communication ports for programming, configuration, and diagnostics, making it a reliable processing engine for plant-wide automation networks.\u003c\/p\u003e\n\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003ePart of the scalable Allen-Bradley ControlLogix 5555 controller family\u003c\/li\u003e\n  \u003cli\u003eSupports multi-tasking execution for continuous, periodic, and event tasks\u003c\/li\u003e\n  \u003cli\u003eIncludes the 1756-BA1 lithium battery for volatile memory backup\u003c\/li\u003e\n  \u003cli\u003eFeatures integrated RS-232 serial communication interface for terminal access and controller configuration\u003c\/li\u003e\n  \u003cli\u003eCompatible with standard 1756 ControlLogix chassis power supplies and backplanes\u003c\/li\u003e\n  \u003cli\u003eRobust noise immunity and isolation ratings designed for heavy industrial environments\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eAutomotive manufacturing and assembly lines\u003c\/li\u003e\n  \u003cli\u003eContinuous process control and chemical processing\u003c\/li\u003e\n  \u003cli\u003eDiscrete packaging and material handling systems\u003c\/li\u003e\n  \u003cli\u003ePower generation and water treatment infrastructure\u003c\/li\u003e\n  \u003cli\u003eHigh-speed industrial machinery management\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n      \u003cth\u003eParameter\u003c\/th\u003e\n      \u003cth\u003eSpecification\u003c\/th\u003e\n    \u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eManufacturer\u003c\/td\u003e\n      \u003ctd\u003eAllen-Bradley \/ Rockwell Automation\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eProduct Type\u003c\/td\u003e\n      \u003ctd\u003eControlLogix 5555 Controller Module\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eCatalog Number\u003c\/td\u003e\n      \u003ctd\u003e1756-L55A\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eProduct Family\u003c\/td\u003e\n      \u003ctd\u003eControlLogix (Series 1756)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eCommunication Ports\u003c\/td\u003e\n      \u003ctd\u003eRS-232 serial port\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eRequired Memory Module\u003c\/td\u003e\n      \u003ctd\u003eSold separately (ControlLogix non-volatile memory card)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eIncluded Accessories\u003c\/td\u003e\n      \u003ctd\u003e1756-BA1 lithium battery\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eIsolation Voltage\u003c\/td\u003e\n      \u003ctd\u003e30V (continuous), basic isolation type, RS-232 to system\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eConducted RF Immunity\u003c\/td\u003e\n      \u003ctd\u003e10V rms with 1kHz sine-wave 80% AM from 150kHz to 80MHz (IEC 61000-4-6)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eWiring Category\u003c\/td\u003e\n      \u003ctd\u003e2 on communications ports\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eNorth American Temperature Code\u003c\/td\u003e\n      \u003ctd\u003eT4A\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eIEC Temperature Code\u003c\/td\u003e\n      \u003ctd\u003eT4\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eCountry of Origin\u003c\/td\u003e\n      \u003ctd\u003eUnited States\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eConnections \/ Interfaces\u003c\/h3\u003e\n\u003cp\u003eThe 1756-L55A controller features a front-accessible RS-232 serial communication port. This interface supports direct connection using standard programming cables such as the 1756-CP3 or 1747-CP3 for initial configuration, firmware updates, and local device troubleshooting. Controller communication across the 1756 backplane supports bridging to EtherNet\/IP, ControlNet, and DeviceNet networking modules.\u003c\/p\u003e\n\n\u003ch3\u003eInstallation Guidelines\u003c\/h3\u003e\n\u003cp\u003eThis module is designed to slide into any slot in a 1756 ControlLogix chassis. Ensure that the chassis power is turned off before inserting or removing the controller. Secure the module using the top and bottom latching mechanisms to guarantee proper electrical connection with the backplane. Verify that a compatible memory module is installed and the included 1756-BA1 battery is securely connected to maintain volatile memory during power cycles.\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":53770306290027,"sku":"1756-L55A","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0953\/3227\/0443\/files\/1756-L55A_1200x1200_9ecabd68-09cb-402e-8a58-361a7a9eb5a3.jpg?v=1787740842","url":"https:\/\/www.plcprotech.com\/products\/allen-bradley-1756-l55a-controllogix-5555-controller-module","provider":"PLC ProTech Ltd.","version":"1.0","type":"link"}