{"product_id":"allen-bradley-1756-rm-controllogix-redundancy-module","title":"Allen-Bradley 1756-RM ControlLogix Redundancy Module","description":"\u003ch2\u003eProduct Overview\u003c\/h2\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eAllen-Bradley 1756-RM\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eserves as the primary hardware link for high-availability ControlLogix systems. This redundancy module synchronizes data between a primary and secondary chassis, ensuring an instantaneous switchover if a controller failure occurs. We provide this unit in\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e100% Brand New, original condition\u003c\/strong\u003e, ensuring your mission-critical processes benefit from factory-sealed, unpowered hardware for maximum system longevity. It supports complex architectures by managing cross-loading of data without interrupting the control loop.\u003c\/p\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr class=\"firstRow\"\u003e\n\u003ctd\u003e\u003cstrong\u003eFeature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eSpecification\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\u003eModule Type\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eRedundancy Module\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eCurrent Draw (5.1V DC)\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e1.2 Amps\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eCurrent Draw (24V DC)\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e120 mA\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\u003e9 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\u003e31 BTU\/hr\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\u003eCompatible Chassis\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e1756-A4, -A7, -A10, -A13, -A17\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eMounting Slot\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eAny slot in the 1756 Chassis\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eEngineering Advantages\u003c\/h2\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eHigh-Speed Data Synchronization:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe 1756-RM manages the state-data transfer between the primary and secondary ControlLogix chassis. It ensures that the backup controller remains ready to assume control within milliseconds, preventing process bumps or safety shutdowns.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eFlexible Chassis Integration:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThis module fits into any available slot in a 1756 ControlLogix chassis. It bridges the redundancy link via fiber-optic cables (sold separately), isolating the two chassis and protecting the system from electrical surges or localized power failures.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eDiagnostic Transparency:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe 1756-RM provides real-time status updates to the controller. Engineers monitor synchronization health directly through Studio 5000, allowing for proactive maintenance before a system switchover becomes necessary.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eRugged Thermal Engineering:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eA specialized heat-sink design limits power dissipation to 9 Watts. This thermal efficiency permits the module to operate in high-density racks without exceeding the T4 temperature code, protecting adjacent I\/O and processor modules from heat stress.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003ePower Supply Versatility:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe module works seamlessly with both standard (1756-PA72, -PB75) and redundant (1756-PA75R, -PB75R) power supplies. This adaptability allows you to design a fully redundant power and control architecture tailored to your facility's risk profile.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eFAQs\u003c\/h2\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eDoes this 1756-RM ship in the original factory box?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes. We guarantee this unit is\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e100% Brand New\u003c\/strong\u003e. It arrives in its original Allen-Bradley factory packaging with intact security seals, ensuring you receive a component that has never seen field service.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCan I use the 1756-RM in the same chassis as my I\/O modules?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIn a standard redundancy configuration, the redundancy chassis typically contains only the 1756-RM, the controller(s), and communication modules (like the 1756-EN2T). This isolates the control core from field-side I\/O disturbances.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eHow many 1756-RM modules do I need for a redundant system?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA complete redundant pair requires two 1756-RM modules—one for the primary chassis and one for the secondary chassis—connected via a fiber-optic cable.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eWhat cable type connects two 1756-RM modules?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe modules utilize 1756-RMC series fiber-optic cables. We recommend selecting the cable length (1m, 3m, or 10m) based on your specific cabinet layout to ensure optimal signal timing and reduced electromagnetic interference.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Allen Bradley","offers":[{"title":"Default Title","offer_id":53129347465400,"sku":"1756-RM","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0935\/6132\/3704\/files\/1756-RM.jpg?v=1774605711","url":"https:\/\/www.globalpetroparts.com\/products\/allen-bradley-1756-rm-controllogix-redundancy-module","provider":"Global Petro Parts Automation","version":"1.0","type":"link"}