{"product_id":"1756-l71s-allen-bradley-controllogix-guard-controller-module","title":"1756-L71S Allen-Bradley ControlLogix Guard Controller Module","description":"\u003cp\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe Allen-Bradley 1756-L71S GuardLogix controller delivers unified standard and safety control for complex automation systems. It pairs with the 1756-L7SP safety partner to achieve certified SIL3 performance. Automatic partner configuration saves commissioning time and strengthens diagnostics across safety tasks. Moreover, high memory resources support motion control and large distributed IO networks.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey Benefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eDedicated safety memory keeps separation between standard logic and validated safety routines. Engineers manage up to five hundred connections for scalable architectures without performance loss. In addition, the front display shows status and faults for rapid maintenance decisions. Therefore, integration with EtherNet IP, ControlNet, and DeviceNet simplifies mixed network designs.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTechnical Specifications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eManufacturer: Allen-Bradley \/ Rockwell Automation\u003cbr\u003eModel Number: 1756-L71S\u003cbr\u003eStandard Memory: 2 MB\u003cbr\u003eSafety Memory: 1 MB\u003cbr\u003eNonvolatile Storage: 1 GB SD card, upgradeable to 2 GB\u003cbr\u003eMaximum Digital I\/O: 128000 points\u003cbr\u003eMaximum Analog I\/O: 4000 points\u003cbr\u003eI\/O Memory Capacity: 0.98 MB\u003cbr\u003eCommunication Ports: USB 1.1 service port\u003cbr\u003eController Connections: Up to 500\u003cbr\u003eCurrent Draw: 800 mA at 5.1 V DC; 5 mA at 1.2 V DC\u003cbr\u003eThermal Dissipation: 8.5 BTU per hour\u003cbr\u003eDimensions: 3.5 x 14 x 14.5 cm\u003cbr\u003eWeight: 0.4 kg\u003cbr\u003eSupported Networks: EtherNet IP, ControlNet, DeviceNet through interface modules\u003cbr\u003eProgramming Languages: Relay Ladder Logic, Structured Text, Function Block Diagram\u003cbr\u003eRedundancy Support: Safety partner architecture; full controller redundancy not supported\u003cbr\u003eTypical Safety Level: SIL3, PLe, Category 4 with 1756-L7SP module\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eApplication Examples\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis controller supports automotive body assembly lines requiring coordinated robots and safe zones. For instance, material handling systems use it for conveyors, hoists, and emergency stops. Process plants apply GuardLogix for burner management and high integrity shutdown functions. Routine firmware updates and health monitoring help sustain availability in harsh industrial environments.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFAQ\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eQ: Does the 1756-L71S require a safety partner module for SIL3 applications?\u003cbr\u003eA: Yes, you must pair it with the 1756-L7SP safety partner to meet SIL3 requirements.\u003c\/p\u003e\n\u003cp\u003eQ: Can this controller handle both standard and safety logic in one project?\u003cbr\u003eA: Yes, it executes standard tasks and safety tasks within a unified Logix platform.\u003c\/p\u003e\n\u003cp\u003eQ: Does the 1756-L71S support controller redundancy?\u003cbr\u003eA: No, it supports safety partner redundancy only, not full processor redundancy.\u003c\/p\u003e\n\u003cp\u003eQ: What networks can be used with this controller in large systems?\u003cbr\u003eA: You can integrate EtherNet IP, ControlNet, and DeviceNet using appropriate communication modules.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":45518759395501,"sku":"1756-L71S","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0733\/1613\/9181\/files\/allen-bradley-1756-l71s-guardlogix-integrated-safety-pac-module-vlsbvm0ngwf.jpg?v=1766976978","url":"https:\/\/www.maxwellplc.com\/products\/1756-l71s-allen-bradley-controllogix-guard-controller-module","provider":"Maxwell PLC Ltd","version":"1.0","type":"link"}