{"product_id":"1756-esmcapk-allen-bradley-controllogix-energy-storage-module-cap","title":"1756-ESMCAPK | Allen-Bradley ControlLogix Energy Storage Module-CAP","description":"\u003ch3\u003eProduct Summary\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eAllen-Bradley 1756-ESMCAPK\u003c\/strong\u003e is a \u003cstrong\u003eCapacitor Energy Storage Module (ESM)\u003c\/strong\u003e with \u003cstrong\u003econformal coating\u003c\/strong\u003e for the ControlLogix 5570 controller platform. It provides backup power to retain volatile memory and WallClockTime during power loss, replacing traditional lithium batteries. The \u003cstrong\u003e-K suffix\u003c\/strong\u003e denotes the conformal coated version for enhanced moisture and contaminant protection in harsh industrial environments. It is \u003cstrong\u003eremovable\u003c\/strong\u003e and ships installed with every 1756-L7x controller.\u003c\/p\u003e\n\n\u003ch3\u003eCore Specifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eModel Number:\u003c\/strong\u003e 1756-ESMCAPK\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Capacitor Energy Storage Module (ESM) with Conformal Coating\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFunction:\u003c\/strong\u003e Retains controller RAM and WallClockTime during power loss\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRemovability:\u003c\/strong\u003e Removable (field-replaceable)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCurrent Draw:\u003c\/strong\u003e 330 mA at 5 VDC\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTemperature Rating:\u003c\/strong\u003e 0°C to 60°C (32°F to 140°F)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 17.653 × 12.7 × 7.62 cm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.147 kg\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEnclosure:\u003c\/strong\u003e Open-style\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Allen-Bradley by Rockwell Automation\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eElectrical \u0026amp; Functional Characteristics\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEnergy Storage:\u003c\/strong\u003e Capacitor-based (no battery required)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eResidual Energy:\u003c\/strong\u003e Drops to ≤40 µJ after at least 20 minutes of de-energization\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWallClockTime Backup:\u003c\/strong\u003e Maintains real-time clock during power outages\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRAM Retention:\u003c\/strong\u003e Preserves user program and data in volatile memory\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTransport Safety:\u003c\/strong\u003e Wait minimum 20 minutes after power-down before removing to ensure safe residual energy levels\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStatus Indication:\u003c\/strong\u003e Controller display shows CHRG or ESM charging during capacitor charge cycle\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSystem Integration \u0026amp; Compatibility\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompatible Controllers:\u003c\/strong\u003e 1756-L71, 1756-L72, 1756-L73, 1756-L74, 1756-L75 ControlLogix 5570 controllers\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInstallation:\u003c\/strong\u003e Pre-installed in controller; field-removable for replacement\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRelated Parts:\u003c\/strong\u003e\n    \u003cul\u003e\n      \u003cli\u003e1756-ESMCAP — Standard capacitor ESM (non-conformal coated)\u003c\/li\u003e\n      \u003cli\u003e1756-ESMCAPXT — Xtreme temperature capacitor ESM\u003c\/li\u003e\n      \u003cli\u003e1756-ESMNSE \/ 1756-ESMNSEK — Removable capacitor ESM with no WallClockTime backup\u003c\/li\u003e\n      \u003cli\u003e1756-ESMNRM \/ 1756-ESMNRMK — Non-removable capacitor ESM (security feature; prevents USB and SD card access)\u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eEnvironmental \u0026amp; Operational Limits\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOperating Temperature:\u003c\/strong\u003e 0°C to 60°C (32°F to 140°F)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStorage Temperature:\u003c\/strong\u003e -40°C to +85°C (-40°F to 185°F)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHumidity:\u003c\/strong\u003e 5% to 95% RH, non-condensing\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVibration:\u003c\/strong\u003e 2G, 10 to 500 Hz\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShock:\u003c\/strong\u003e 30G operating; 50G non-operating\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eApprovals:\u003c\/strong\u003e CE, CCC, Australian RCM, American Bureau of Shipping\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eIndustrial Applications\u003c\/h3\u003e\n\u003cp\u003eDeployed across all ControlLogix 5570 applications in manufacturing, process control, oil \u0026amp; gas, water treatment, and material handling where reliable memory retention and real-time clock backup are critical during power interruptions.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\n\u003ch4\u003eWhat does the 1756-ESMCAPK do?\u003c\/h4\u003e\n\u003cp\u003eIt is a capacitor-based energy storage module that retains controller RAM and WallClockTime during power loss, eliminating the need for a lithium battery.\u003c\/p\u003e\n\n\u003ch4\u003eWhat is the difference between 1756-ESMCAP and 1756-ESMCAPK?\u003c\/h4\u003e\n\u003cp\u003eThe \u003cstrong\u003e1756-ESMCAP\u003c\/strong\u003e is the standard version. The \u003cstrong\u003e1756-ESMCAPK\u003c\/strong\u003e has \u003cstrong\u003econformal coating\u003c\/strong\u003e on the circuit boards for enhanced protection against moisture, dust, and chemical contaminants in harsh environments.\u003c\/p\u003e\n\n\u003ch4\u003eCan I remove the ESM while the controller is running?\u003c\/h4\u003e\n\u003cp\u003eNo — always power down the controller first. After power-down, wait at least \u003cstrong\u003e20 minutes\u003c\/strong\u003e for residual capacitor energy to dissipate to ≤40 µJ before removing the module.\u003c\/p\u003e\n\n\u003ch4\u003eHow do I know when the ESM is fully charged?\u003c\/h4\u003e\n\u003cp\u003eThe controller status display will show \u003cstrong\u003eCHRG\u003c\/strong\u003e or \u003cstrong\u003eESM charging\u003c\/strong\u003e during the charge cycle. When these messages are no longer displayed, the capacitor is fully charged.\u003c\/p\u003e\n\n\u003ch4\u003eWhat are the related part numbers?\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e1756-ESMCAP — Standard capacitor ESM (removable)\u003c\/li\u003e\n  \u003cli\u003e1756-ESMCAPK — Conformal coated capacitor ESM (this part)\u003c\/li\u003e\n  \u003cli\u003e1756-ESMCAPXT — Xtreme temperature capacitor ESM\u003c\/li\u003e\n  \u003cli\u003e1756-ESMNSEK — Conformal coated ESM with no WallClockTime backup\u003c\/li\u003e\n  \u003cli\u003e1756-ESMNRMK — Conformal coated non-removable ESM (security version)\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Allen Bradley","offers":[{"title":"Default Title","offer_id":53683953565880,"sku":"1756-ESMCAPK","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0935\/6132\/3704\/files\/1756-ESMCAP.png?v=1782895460","url":"https:\/\/www.globalpetroparts.com\/products\/1756-esmcapk-allen-bradley-controllogix-energy-storage-module-cap","provider":"Global Petro Parts Automation","version":"1.0","type":"link"}