{"product_id":"1757-srm-allen-bradley-controllogix-datasheet-technical-manual","title":"1757-SRM Allen-Bradley ControlLogix Datasheet \u0026 Technical Manual","description":"\u003ch2\u003eAllen-Bradley 1757-SRM ControlLogix System Redundancy Module\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eAllen-Bradley 1757-SRM\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003e1757-SRM\u003c\/strong\u003e System Redundancy Module, operates as a dedicated hardware component for controller state synchronization within ControlLogix and ProcessLogix platforms.\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\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\u003eModel\u003c\/td\u003e\n\u003ctd\u003e1757-SRM\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\u003e1.00 lbs (0.452 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e140 x 70 x 145 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e0 to 60 deg C (32 to 140 deg F)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003eBackplane current draw: 0.75 A @ 3.3 VDC, 1 A @ 5.1 VDC, 0.16 A @ 24 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModule Type\u003c\/td\u003e\n\u003ctd\u003eSystem Redundancy Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSlot Width\u003c\/td\u003e\n\u003ctd\u003e2 slots (ControlLogix chassis)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Dissipation\u003c\/td\u003e\n\u003ctd\u003eMax 11.28 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThermal Dissipation\u003c\/td\u003e\n\u003ctd\u003e38.49 BTU\/hr\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConnector Type\u003c\/td\u003e\n\u003ctd\u003eSC fiber optic port (1 transmit, 1 receive channel)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCable Type\u003c\/td\u003e\n\u003ctd\u003e62.5\/125 micron multi-mode fiber-optic cable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupported Controllers\u003c\/td\u003e\n\u003ctd\u003eLogix 5560 series and compatible ControlLogix processors\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWavelength\u003c\/td\u003e\n\u003ctd\u003e1300 nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRelative Humidity\u003c\/td\u003e\n\u003ctd\u003eUp to 95% non-condensing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEnclosure Type Rating\u003c\/td\u003e\n\u003ctd\u003eNone (open-style)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIEC Temperature Code\u003c\/td\u003e\n\u003ctd\u003eT4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eIndustrial Control \u0026amp; Drive Integration\u003c\/h3\u003e\n\u003cp\u003eThe 1757-SRM executes synchronous data transfer routines directly tied to the backplane bus communication velocity properties of the local rack. The module establishes a dedicated fiber-optic link to coordinate memory duplication and I\/O density scaling states across paired chassis operating on Profinet \/ EtherNet\/IP deterministic networks. Maintaining identical firmware flash compatibility between the primary and secondary processors, network adapters, and the redundancy modules is required to prevent switchover delays, cross-talk faults, or register discrepancies during cross-chassis replication cycles.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: Does the 1757-SRM support Removal and Insertion Under Power (RIUP)?\u003c\/p\u003e\n\u003cp\u003eA: Yes. The 1757-SRM hardware supports hot-swapping within the ControlLogix chassis framework. However, removal of an active, synchronized module will disrupt the redundancy cross-link and terminate real-time chassis state mirror tracking.\u003c\/p\u003e\n\u003cp\u003eQ: What are the restrictions regarding the synchronization link cable length?\u003c\/p\u003e\n\u003cp\u003eA: The module accommodates dedicated multi-mode fiber-optic cables utilizing SC-type connectors. Verified operation is limited to specific pre-fabricated physical lengths: 1 m, 3 m, 10 m, 50 m, and 100 m options (cataloged under 1757-SRC series).\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMechanical Slot Occupancy\u003c\/strong\u003e: Insert the 1757-SRM into any two adjacent available slots within the primary ControlLogix chassis. Press the module evenly into the backplane connectors until the top and bottom installation latches lock completely into the chassis framework.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFiber-Optic Connection and Minimum Bend Radius\u003c\/strong\u003e: Align the SC-type connector plugs with the optical port on the front face of the module. Ensure the multi-mode fiber cable does not exceed the minimum structural bend radius limits to prevent optical attenuation or signal loss at the 1300 nm operating wavelength.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHardware Matching Verification\u003c\/strong\u003e: Prior to initializing commissioning, verify that both the primary and secondary redundant chassis contain identical hardware configurations, power supply ratings, and matched module revisions to allow valid system cross-synchronization.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Allen Bradley","offers":[{"title":"Default Title","offer_id":43421296361562,"sku":"1757-SRM","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0710\/5957\/0778\/files\/183._cd46100f-c4a2-4b63-8ca2-91d369beaa38.jpg?v=1779848781","url":"https:\/\/www.spareoil.com\/products\/1757-srm-allen-bradley-controllogix-datasheet-technical-manual","provider":"SpareOil Automation","version":"1.0","type":"link"}