{"product_id":"allen-bradley-1756-esmcap-controllogix-energy-storage-module","title":"Allen-Bradley 1756-ESMCAP ControlLogix Energy Storage Module","description":"\u003ch1 class=\"PDq2pG_selectionAnchorContainer\"\u003eAllen-Bradley 1756-ESMCAP ControlLogix Energy Storage Module\u003cspan class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\n\u003c\/h1\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eAllen-Bradley 1756-ESMCAP\u003c\/strong\u003e, also cataloged as the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1756-ESMCAP Energy Storage Module\u003c\/strong\u003e, serves as a dedicated capacitor energy buffering component for ControlLogix 1756-L7x controller power retention within ControlLogix backplane systems.\u003c\/p\u003e\n\u003cp\u003eConfigured for transient energy storage and voltage hold-up stabilization in ControlLogix chassis operation, the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eAllen-Bradley 1756-ESMCAP\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e(\u003cstrong\u003e1756-ESMCAP Energy Storage Module\u003c\/strong\u003e) provides direct electrical buffering on the 5.1 VDC backplane rail, maintaining controller memory integrity during short power interruptions.\u003c\/p\u003e\n\u003ch3\u003eHardware Specifications\u003c\/h3\u003e\n\u003ctable class=\"w-fit min-w-(--thread-content-width)\"\u003e\n\u003cthead\u003e\n\u003ctr class=\"firstRow\"\u003e\n\u003cth class=\"last:pe-10\"\u003eParameter\u003c\/th\u003e\n\u003cth class=\"last:pe-10\"\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-ESMCAP\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\u003e0.15 lbs\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\u003e330 mA @ 5.1 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModule Type\u003c\/td\u003e\n\u003ctd\u003eCapacitor-based Energy Storage Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Dissipation\u003c\/td\u003e\n\u003ctd\u003e13.3 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChassis Position\u003c\/td\u003e\n\u003ctd\u003eAny slot (ControlLogix 1756 chassis)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEnclosure\u003c\/td\u003e\n\u003ctd\u003eOpen-style\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eControlLogix Backplane Energy Buffering Behavior\u003c\/h3\u003e\n\u003cp\u003eWithin the Allen-Bradley ControlLogix architecture, the 1756-ESMCAP interfaces directly with the backplane bus power distribution layer, stabilizing transient dips on the 5.1 VDC logic rail. The capacitor-based storage element supports short-duration hold-up energy delivery during power fluctuation events affecting controller logic execution.\u003c\/p\u003e\n\u003cp\u003eThe module participates in backplane power conditioning rather than deterministic I\/O execution, maintaining energy continuity for 1756-L7x controller memory and scan cycle integrity during micro-interruptions. It does not participate in EtherNet\/IP or CIP data structures but remains electrically integrated into chassis power sequencing logic.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions (FAQ)\u003c\/h3\u003e\n\u003cp\u003eQ: Does the 1756-ESMCAP support hot-swap installation?\u003cbr\u003eA: It is installed within the ControlLogix chassis, but removal under load depends on system power state and controller configuration rules.\u003c\/p\u003e\n\u003cp\u003eQ: What happens if backplane current exceeds 330 mA design load?\u003cbr\u003eA: Excess load conditions may reduce capacitor charge stability and shorten hold-up time during power loss events.\u003c\/p\u003e\n\u003cp\u003eQ: Is the module firmware-based or software configurable?\u003cbr\u003eA: No firmware or configuration parameters exist; operation is purely capacitor-based energy storage.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cp\u003eInstall the module into any available slot of a compatible ControlLogix chassis with system power removed to avoid backplane voltage transients during insertion.\u003c\/p\u003e\n\u003cp\u003eEnsure proper seating into the 1756 backplane connector to maintain stable 5.1 VDC rail contact. Avoid mechanical stress on the module edge connector during installation.\u003c\/p\u003e\n\u003cp\u003eMaintain enclosure airflow paths within the 0 to 60 deg C operating range. Do not install in contaminated or conductive dust environments without proper cabinet filtration.\u003c\/p\u003e\n\u003cp\u003eBackplane grounding must be continuous across all chassis segments to prevent energy storage discharge irregularities during power cycling events.\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":43585663434842,"sku":"1756-ESMCAP","price":123.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0612\/4601\/3530\/files\/1756-ESMCAP2.jpg?v=1783058922","url":"https:\/\/www.plcmasters.com\/products\/allen-bradley-1756-esmcap-controllogix-energy-storage-module","provider":"PLC Masters Ltd.","version":"1.0","type":"link"}