{"product_id":"allen-bradley-1756-rm2-controllogix-redundancy-enhanced-module","title":"Allen-Bradley 1756-RM2 ControlLogix Redundancy Enhanced Module","description":"\u003ch3\u003eDescription\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003e1756-RM2\u003c\/strong\u003e is a ControlLogix redundancy enhanced module designed to provide high-availability control and uninterrupted process operation across industrial applications. Operating within a redundant chassis pair, the device supervises system operating states, continuously monitors chassis events, and facilitates crossloading and data synchronization between controllers. Equipped with dual fiber-optic communication ports, the \u003cstrong\u003e1756-RM2\u003c\/strong\u003e enables high-speed data transfer up to 1000 Mbps with zero single point of failure on the fiber links. The module executes automatic, bumpless switchovers in response to system faults—such as power loss, controller faults, or communication link interruptions—in as fast as 20 ms, maintaining system integrity and continuous process execution.\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eHigh-speed redundancy communication up to 1000 Mbps using dual fiber-optic channels.\u003c\/li\u003e\n\u003cli\u003ePlug-and-play-style commissioning and setup with no complex user programming required.\u003c\/li\u003e\n\u003cli\u003eDual fiber-optic ports providing cable redundancy for continuous crossloading and monitoring.\u003c\/li\u003e\n\u003cli\u003eRapid switchover execution in as fast as 20 ms upon detection of primary chassis faults.\u003c\/li\u003e\n\u003cli\u003eDirect support for ControlNet and EtherNet\/IP communication networks in redundant configurations.\u003c\/li\u003e\n\u003cli\u003eFull compatibility with CIP Sync technology over EtherNet\/IP networks for coordinated time synchronization.\u003c\/li\u003e\n\u003cli\u003eIntegrated alphanumeric status display and LED diagnostic indicators for real-time channel and module status monitoring.\u003c\/li\u003e\n\u003cli\u003eInterference-free operation suitable for use in ControlLogix SIL2 safety applications.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eContinuous process control systems requiring high system availability.\u003c\/li\u003e\n\u003cli\u003eCritical oil and gas, chemical, and petrochemical processing plants.\u003c\/li\u003e\n\u003cli\u003ePower generation and energy distribution facilities.\u003c\/li\u003e\n\u003cli\u003ePharmaceutical and food \u0026amp; beverage manufacturing facilities.\u003c\/li\u003e\n\u003cli\u003eWater and wastewater treatment automation infrastructure.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eParameter\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eManufacturer\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAllen-Bradley \/ Rockwell Automation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCatalog Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1756-RM2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eUPC\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e884951800434\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModule Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRedundancy Enhanced Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBackplane Current (5.1V DC)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1.16 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBackplane Current (24V DC)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3.4 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePower Dissipation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e6 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eThermal Dissipation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e20.4 BTU\/hr\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTransmission Rate\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1000 Mbps\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eNumber of Channels\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSignal Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFiber Optic\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOptical Transceiver Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSFP Transceiver (LC Duplex)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCable Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e8.5\/125 micron single-mode fiber-optic cable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWavelength\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1310 nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaximum Distance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e10 km (10,000 m)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating Temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0 degC to +60 degC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eStorage Temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e-40 degC to +85 degC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRelative Humidity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e5% to 95% noncondensing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCompatible Cables\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1756-RMC1, 1756-RMC3, 1756-RMC10\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eInstallation Guidelines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eModule Placement:\u003c\/strong\u003e Install one module in the same slot location of each chassis within the redundant pair. Position the redundancy module as close as possible to the primary controller for optimal crossload performance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFiber Routing:\u003c\/strong\u003e Connect matching fiber-optic channels between chassis (CH1 to CH1, CH2 to CH2). Route redundant fiber cables along separate pathways to prevent simultaneous physical damage to both channels.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBend Radius \u0026amp; Care:\u003c\/strong\u003e Avoid sharp bends or pulling tension on single-mode optical fibers during installation. Keep dust caps on unused optical ports and connectors at all times.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHandling Precautions:\u003c\/strong\u003e Always observe electrostatic discharge (ESD) safety practices when handling the module board and connectors.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem Pairing:\u003c\/strong\u003e Ensure both primary and secondary chassis contain identical chassis sizes, slot layouts, module series, and firmware revisions prior to qualification.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":53650395398507,"sku":"1756-RM2","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0953\/3227\/0443\/files\/1756-rm2.jpg?v=1785671966","url":"https:\/\/www.plcprotech.com\/products\/allen-bradley-1756-rm2-controllogix-redundancy-enhanced-module","provider":"PLC ProTech Ltd.","version":"1.0","type":"link"}