{"product_id":"1756-rm-allen-bradley-controllogix-chassis-redundancy-link","title":"1756-RM | Allen Bradley | ControlLogix Chassis Redundancy Link","description":"\u003ch3\u003e\u003cstrong\u003eAllen Bradley 1756-RM Series B ControlLogix Redundancy Module\u003c\/strong\u003e\u003c\/h3\u003e\n\u003ch3\u003e\u003cstrong\u003eProduct Description\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1756-RM (1756-RM)\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eSeries B is a high-performance redundancy module designed for the Allen-Bradley ControlLogix platform. It serves as the critical synchronization link between a primary and a secondary controller chassis in high-availability systems. By facilitating real-time data crossloading and monitoring the health of the active processor, the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1756-RM (1756-RM)\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eensures that in the event of a primary controller failure, the secondary system takes control seamlessly without disrupting the process.\u003c\/p\u003e\n\u003cp\u003eThis Series B module features enhanced synchronization speeds and improved fiber-optic communication diagnostics over the original Series A. It is essential for mission-critical industrial applications where downtime results in significant financial loss or safety risks. The\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1756-RM (1756-RM)\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eoperates by scanning the primary chassis state and maintaining an identical image in the secondary chassis, enabling a bumpless switchover that is transparent to the rest of the network and field devices.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eDetailed Technical Specifications\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1756-RM\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eSeries B provides robust synchronization with the following engineering specifications:\u003c\/p\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eManufacturer\u003c\/strong\u003e: Allen-Bradley (Rockwell Automation)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eModel\/Catalog Number\u003c\/strong\u003e:\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1756-RM\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eSeries\u003c\/strong\u003e: Series B (Enhanced Redundancy)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eModule Type\u003c\/strong\u003e: Redundancy Module\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eBackplane Current (1.2V DC)\u003c\/strong\u003e: 4 mA\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eBackplane Current (5.1V DC)\u003c\/strong\u003e: 1.2 A\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eBackplane Current (24V DC)\u003c\/strong\u003e: 120 mA\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003ePower Dissipation\u003c\/strong\u003e: 9 Watts\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eThermal Dissipation\u003c\/strong\u003e: 31 BTU\/hr\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eFiber Optic Cable Compatibility\u003c\/strong\u003e: 1756-RMC1 (1m), 1756-RMC3 (3m), 1756-RMC10 (10m)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eSwitchover Time\u003c\/strong\u003e: Typically within 10–50 ms (application dependent)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eIsolation Voltage\u003c\/strong\u003e: 30V (continuous), Basic Insulation Type\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eOperating Temperature\u003c\/strong\u003e: 0°C to +60°C (32°F to 140°F)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eStorage Temperature\u003c\/strong\u003e: -40°C to +85°C (-40°F to 185°F)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCompatible Chassis\u003c\/strong\u003e: 1756-A4, 1756-A7, 1756-A10, 1756-A13, 1756-A17\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCompatible Controllers\u003c\/strong\u003e: ControlLogix L6 and L7 series (e.g., 1756-L71, L72, L73)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Allen Bradley","offers":[{"title":"Default Title","offer_id":44001048625251,"sku":"1756-RM","price":260.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0583\/5246\/8067\/files\/292._bd0d2f5a-19df-476d-9fd4-25a732984c5d.jpg?v=1770969182","url":"https:\/\/www.autocontrolglobal.com\/fr\/products\/1756-rm-allen-bradley-controllogix-chassis-redundancy-link","provider":"AutoControl Global","version":"1.0","type":"link"}