{"product_id":"redundancy-module-1756-rm2k-allen-bradley-enhanced","title":"Redundancy Module 1756-RM2K Allen Bradley Enhanced","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e\n\u003cp\u003eThe Allen-Bradley 1756-RM2K is a conformal-coated enhanced redundancy module for ControlLogix systems. Installed in pairs across two chassis, it synchronizes controller memory and I\/O data over a dual-channel fiber optic link at 1000 Mbps, enabling bumpless switchover between primary and secondary controllers.\u003c\/p\u003e\n\u003ch3\u003eKey Specs\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSynchronization speed:\u003c\/strong\u003e 1000 Mbps\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMax fiber distance:\u003c\/strong\u003e 10 km\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWavelength:\u003c\/strong\u003e 1310 nm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCurrent draw:\u003c\/strong\u003e 1.16 A @ 5.1 V DC, 3.4 mA @ 24 V DC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower dissipation:\u003c\/strong\u003e 6 W max\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible controllers:\u003c\/strong\u003e ControlLogix 5560 and 5570 series\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible cables:\u003c\/strong\u003e 1756-RMC1 (1 m), 1756-RMC3 (3 m), 1756-RMC10 (10 m)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhy Choose This\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eGigabit-class fiber synchronization supports chassis separation up to 10 km\u003c\/li\u003e\n\u003cli\u003eConformal coating protects against corrosive industrial atmospheres\u003c\/li\u003e\n\u003cli\u003eFast switchover maintains process continuity on primary controller failure\u003c\/li\u003e\n\u003cli\u003e4-character alphanumeric display for local status monitoring\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eCommon Questions\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCan I mix 1756-RM and 1756-RM2 modules?\u003c\/strong\u003e No, both chassis must use the same redundancy module type.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHow many modules are required?\u003c\/strong\u003e One 1756-RM2K per chassis, with two chassis total for a redundant pair.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhat fiber cable is used?\u003c\/strong\u003e 8.5\/125 micron single-mode fiber with LC connectors via 1756-RMC series cables.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eMounting Steps\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eInstall one module in each chassis at the same relative slot position.\u003c\/li\u003e\n\u003cli\u003eConnect the dual-channel fiber link between the two modules.\u003c\/li\u003e\n\u003cli\u003eVerify the 4-character display shows matching status on both modules.\u003c\/li\u003e\n\u003cli\u003eConfigure controller redundancy in Studio 5000 Logix Designer.\u003c\/li\u003e\n\u003cli\u003eTest switchover functionality before placing the system in production.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch3\u003eBuying Advice\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eChoose 1756-RM2K for corrosive environments; use 1756-RM2 for standard conditions.\u003c\/li\u003e\n\u003cli\u003eFor extreme temperatures, select the 1756-RM2XT variant.\u003c\/li\u003e\n\u003cli\u003eBudget 1.16 A at 5.1 V DC per module in chassis power calculations.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":50179967320202,"sku":"1756-RM2K","price":162.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0698\/2818\/2154\/files\/1756-RM2K_2_a81dece0-3993-4215-9cef-13098c0b726a.jpg?v=1789108825","url":"https:\/\/www.cambiaplc.com\/products\/redundancy-module-1756-rm2k-allen-bradley-enhanced","provider":"Controlix Automation","version":"1.0","type":"link"}