{"product_id":"allen-bradley-1756-rm-controllogix-redundancy-module","title":"Allen-Bradley 1756-RM ControlLogix Redundancy Module","description":"\u003ch2\u003eAllen-Bradley 1756-RM ControlLogix Redundancy Module\u003c\/h2\u003e\n\u003cp\u003eConfigured for controller synchronization and failover execution in ControlLogix redundant chassis systems, the \u003cstrong\u003eAllen-Bradley 1756-RM\u003c\/strong\u003e (\u003cstrong\u003e1756-RM\u003c\/strong\u003e Redundancy Module) provides direct physical and data communication control between paired controllers through a fiber optic redundancy link.\u003c\/p\u003e\n\u003ch3\u003eHardware Specifications\u003c\/h3\u003e\n\u003cfigure class=\"table\"\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\u003eModel\u003c\/td\u003e\n\u003ctd\u003e1756-RM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eAllen-Bradley\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eUSA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.64 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e0 deg C to 60 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e9 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModule Type\u003c\/td\u003e\n\u003ctd\u003eControlLogix Redundancy Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eController Redundancy\u003c\/td\u003e\n\u003ctd\u003eSupports two identical controllers in redundant chassis configurations\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunication Speed\u003c\/td\u003e\n\u003ctd\u003e100 Mbps with same-series redundancy modules\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunication Interface\u003c\/td\u003e\n\u003ctd\u003eSingle-mode LC fiber optic connector\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRedundancy Cable Compatibility\u003c\/td\u003e\n\u003ctd\u003e1756-RMC1 (1 m), 1756-RMC3 (3 m), 1756-RMC10 (10 m)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCurrent Draw\u003c\/td\u003e\n\u003ctd\u003e4 mA at 1.2 VDC, 1.2 A at 5.1 VDC, 120 mA at 24 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThermal Dissipation\u003c\/td\u003e\n\u003ctd\u003e31 BTU\/hr\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStorage Temperature\u003c\/td\u003e\n\u003ctd\u003e-40 deg C to 85 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRelative Humidity\u003c\/td\u003e\n\u003ctd\u003e5% to 95%, non-condensing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShock Resistance\u003c\/td\u003e\n\u003ctd\u003e30 g operating, 50 g non-operating\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVibration Resistance\u003c\/td\u003e\n\u003ctd\u003e2 g at 10-500 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible Chassis\u003c\/td\u003e\n\u003ctd\u003e1756-A4, 1756-A7, 1756-A10, 1756-A13, 1756-A17\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible Power Supplies\u003c\/td\u003e\n\u003ctd\u003e1756-PA72, 1756-PA75, 1756-PB72, 1756-PB75, 1756-PA75R, 1756-PB75R, PSCA2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eEtherNet\/IP and ControlLogix Redundancy Architecture\u003c\/h3\u003e\n\u003cp\u003eThe 1756-RM module operates as a dedicated redundancy communication component within the ControlLogix platform. It maintains synchronization between paired controller chassis assemblies through a single-mode LC fiber optic connection. The module transfers redundancy status information and controller synchronization data to support automatic switchover operations between primary and secondary controller assemblies.\u003c\/p\u003e\n\u003cp\u003eThe module uses ControlLogix backplane communication for chassis-level data exchange and supports system configurations requiring matched controller hardware, firmware compatibility, and identical chassis arrangements. Redundancy performance depends on synchronized controller firmware, compatible communication modules, and correct chassis installation.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: What communication interface is used by the 1756-RM module?\u003cbr\u003eA: The 1756-RM uses a single-mode LC fiber optic interface for redundancy communication between paired ControlLogix chassis.\u003c\/p\u003e\n\u003cp\u003eQ: What power requirements apply to the 1756-RM module?\u003cbr\u003eA: The module requires chassis backplane power with current draw values of 4 mA at 1.2 VDC, 1.2 A at 5.1 VDC, and 120 mA at 24 VDC. Maximum power dissipation is 9 W.\u003c\/p\u003e\n\u003cp\u003eQ: Which chassis platforms support the 1756-RM module?\u003cbr\u003eA: The module is compatible with ControlLogix chassis models 1756-A4, 1756-A7, 1756-A10, 1756-A13, and 1756-A17.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cp\u003eInstall the 1756-RM module in a compatible ControlLogix chassis slot according to the chassis installation manual. Verify that both redundant chassis assemblies contain matching controller configurations and compatible firmware revisions before enabling redundancy operation.\u003c\/p\u003e\n\u003cp\u003eUse approved fiber optic redundancy cables and maintain proper fiber routing practices to prevent excessive bending or mechanical stress. Keep fiber communication paths separated from high-voltage power wiring and sources of electromagnetic interference.\u003c\/p\u003e\n\u003cp\u003eConfirm backplane power availability before module insertion. Follow standard industrial grounding practices for chassis installation, including proper enclosure grounding and cable shielding methods where applicable.\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":43627649990746,"sku":"1756-RM","price":123.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0612\/4601\/3530\/files\/1756-RM2_254c077f-142e-412a-b616-a042699cdc40.jpg?v=1783668242","url":"https:\/\/www.plcmasters.com\/products\/allen-bradley-1756-rm-controllogix-redundancy-module","provider":"PLC Masters Ltd.","version":"1.0","type":"link"}