{"product_id":"allen-bradley-1756-srm-controllogix-system-redundancy-module","title":"Allen-Bradley 1756-SRM ControlLogix System Redundancy Module","description":"\u003ch2\u003eAllen-Bradley 1756-SRM ControlLogix System Redundancy Module\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eAllen-Bradley 1756-SRM\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003e1756-SRM\u003c\/strong\u003e System Redundancy Module, operates as a dedicated hardware component for controller synchronization and failover execution within ControlLogix redundancy networks. The module provides fiber-based communication between paired controllers for standby coordination and status exchange.\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-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\u003eUnited States\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.45 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e14.5 x 7 x 14 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e0 to 60 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e800 mA @ 5 VDC, 5 mA @ 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\u003eProduct Line\u003c\/td\u003e\n\u003ctd\u003eControlLogix\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible Controllers\u003c\/td\u003e\n\u003ctd\u003eControlLogix 5570, ControlLogix 5580, Logix 5560\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRedundancy Architecture\u003c\/td\u003e\n\u003ctd\u003eHot-standby configuration\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunication Interface\u003c\/td\u003e\n\u003ctd\u003eControlNet or EtherNet\/IP synchronization\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConnector Type\u003c\/td\u003e\n\u003ctd\u003eSC fiber-optic\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFiber Type\u003c\/td\u003e\n\u003ctd\u003e62.5\/125 um multi-mode fiber\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupported Cables\u003c\/td\u003e\n\u003ctd\u003e1757-SRC1, SRC3, SRC10, SRC50, SRC100\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Wavelength\u003c\/td\u003e\n\u003ctd\u003e1300 nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFiber Channels\u003c\/td\u003e\n\u003ctd\u003e1 transmit\/receive fiber\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBackplane Current\u003c\/td\u003e\n\u003ctd\u003e0.160 A @ 24 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Dissipation\u003c\/td\u003e\n\u003ctd\u003eMaximum 11.28 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThermal Dissipation\u003c\/td\u003e\n\u003ctd\u003eMaximum 38.49 BTU\/hr\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEnclosure Rating\u003c\/td\u003e\n\u003ctd\u003eOpen-style, no enclosure\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 Synchronization\u003c\/h3\u003e\n\u003cp\u003eThe 1756-SRM provides synchronization communication between redundant ControlLogix controllers through dedicated redundancy links. The module supports deterministic controller state exchange, including program execution synchronization, I\/O data coordination, and controller status monitoring.\u003c\/p\u003e\n\u003cp\u003eThe module operates within ControlLogix chassis architectures using the 1756 backplane interface. EtherNet\/IP and ControlNet network configurations can be integrated according to the controller redundancy system design.\u003c\/p\u003e\n\u003cp\u003eThe redundancy architecture uses paired controller operation with hot-standby behavior. Firmware flash compatibility between the redundancy module, controller firmware, and associated ControlLogix components must be verified during system configuration.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions (FAQ)\u003c\/h3\u003e\n\u003cp\u003eQ: What communication interface is used by the 1756-SRM for controller synchronization?\u003cbr\u003eA: The module uses a dedicated SC fiber-optic connection with 62.5\/125 um multi-mode fiber cable for redundancy synchronization.\u003c\/p\u003e\n\u003cp\u003eQ: What controller platforms are compatible with the 1756-SRM?\u003cbr\u003eA: The module supports ControlLogix 5570, ControlLogix 5580, and Logix 5560 controller redundancy configurations.\u003c\/p\u003e\n\u003cp\u003eQ: What are the specified power requirements of the 1756-SRM?\u003cbr\u003eA: The module requires 800 mA at 5 VDC and 5 mA at 24 VDC, with a maximum power dissipation of 11.28 W.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cp\u003eInstall the 1756-SRM in a compatible ControlLogix chassis slot according to the redundancy system hardware configuration. Confirm chassis power availability and verify backplane connection before system startup.\u003c\/p\u003e\n\u003cp\u003eConnect the SC fiber-optic interface using approved multi-mode fiber cables. Inspect fiber connectors before installation and prevent contamination, excessive bending, or mechanical stress on the optical cable.\u003c\/p\u003e\n\u003cp\u003eRoute fiber communication cables separately from high-current power conductors and switching circuits. Maintain proper cabinet grounding practices for adjacent electrical equipment.\u003c\/p\u003e\n\u003cp\u003eBefore commissioning, verify controller firmware compatibility, redundancy module configuration, fiber link status, and synchronization diagnostics through the ControlLogix programming environment.\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":43649277263962,"sku":"1756-SRM","price":123.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0612\/4601\/3530\/files\/1756-SRM2.jpg?v=1783913190","url":"https:\/\/www.plcmasters.com\/products\/allen-bradley-1756-srm-controllogix-system-redundancy-module","provider":"PLC Masters Ltd.","version":"1.0","type":"link"}