{"product_id":"1757-bem-allen-bradley-battery-extension-module-processlogix","title":"1757-BEM Allen-Bradley Battery Extension Module ProcessLogix","description":"\u003cp class=\"PDq2pG_selectionAnchorContainer\"\u003eThe \u003cstrong\u003eAllen-Bradley 1757-BEM\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003e1757BEM\u003c\/strong\u003e Battery Extension Module, operates as a dedicated hardware component for providing backup battery power retention within ProcessLogix control platforms.\u003cspan class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003eModel Reference\u003c\/h3\u003e\n\u003cp\u003eThe 1757-BEM is a battery extension module designed to maintain backup power for ProcessLogix controller memory retention circuits. The module provides a 3 VDC backup supply path and supports standby current requirements for controller data preservation during primary power interruption.\u003c\/p\u003e\n\u003ch3\u003eHardware Specifications\u003c\/h3\u003e\n\u003cdiv class=\"group TyagGW_tableContainer\"\u003e\n\u003cdiv class=\"TyagGW_tableWrapper flex flex-col-reverse w-fit\" tabindex=\"-1\"\u003e\n\u003ctable class=\"w-fit min-w-(--thread-content-width)\"\u003e\n\u003cthead\u003e\n\u003ctr\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\u003e1757-BEM\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\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eBattery Extension Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSeries\u003c\/td\u003e\n\u003ctd\u003eProcessLogix\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\u003e0.36 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShipping Dimensions\u003c\/td\u003e\n\u003ctd\u003e3.5 x 14 x 14.5 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003eNot specified\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e0.5 W maximum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Voltage\u003c\/td\u003e\n\u003ctd\u003e24 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBackup Voltage\u003c\/td\u003e\n\u003ctd\u003e3 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBattery Backup Current\u003c\/td\u003e\n\u003ctd\u003e5 mA DC at 3.6 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStandby Current Draw\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;10 uA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBattery Life\u003c\/td\u003e\n\u003ctd\u003e5-10 years\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFull Charge Backup Time\u003c\/td\u003e\n\u003ctd\u003e240 hours\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBattery Function\u003c\/td\u003e\n\u003ctd\u003eMemory backup power extension\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch3\u003eProcessLogix Platform Compatibility\u003c\/h3\u003e\n\u003cp\u003eThe 1757-BEM operates as a dedicated backup power accessory within the ProcessLogix control architecture. The module maintains stored controller information by supplying backup voltage when the primary operating power source is unavailable.\u003c\/p\u003e\n\u003cp\u003eThe module requires correct installation within the compatible ProcessLogix hardware configuration. Power connections, battery condition, and controller status indicators should be verified during commissioning and maintenance procedures.\u003c\/p\u003e\n\u003ch3\u003eFirmware and Control System Integration\u003c\/h3\u003e\n\u003cp\u003eAllen-Bradley ProcessLogix hardware uses defined module identification and communication parameters for system configuration. The 1757-BEM does not perform control logic execution but provides electrical backup support for associated controller memory retention functions.\u003c\/p\u003e\n\u003cp\u003eSystem compatibility requires matching hardware revision requirements and ProcessLogix configuration parameters before replacement or installation.\u003c\/p\u003e\n\u003ch3\u003eOrdering Info\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1 x Allen-Bradley 1757-BEM Battery Extension Module\u003c\/li\u003e\n\u003cli\u003e1 x Battery extension module assembly\u003c\/li\u003e\n\u003cli\u003e1 x Product identification label\u003c\/li\u003e\n\u003cli\u003eProcessLogix controller hardware, chassis, and external accessories are not included unless separately specified\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003ePower Connection\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eVerify the 24 VDC supply polarity before connecting the module.\u003c\/li\u003e\n\u003cli\u003eConfirm the ProcessLogix system power state before installation or replacement.\u003c\/li\u003e\n\u003cli\u003eAvoid connecting the module to unsupported voltage sources.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eBattery Handling\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eInspect battery condition before commissioning.\u003c\/li\u003e\n\u003cli\u003eReplace the module according to maintenance requirements when backup capacity decreases.\u003c\/li\u003e\n\u003cli\u003ePrevent short circuits across battery terminals during handling.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eInstallation Environment\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eInstall the module in a clean and dry control cabinet environment.\u003c\/li\u003e\n\u003cli\u003eMaintain separation between low-level control wiring and high-voltage power conductors.\u003c\/li\u003e\n\u003cli\u003eVerify connector engagement and mechanical mounting before system startup.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eWhat is the primary function of the 1757-BEM?\u003c\/p\u003e\n\u003cp\u003eThe 1757-BEM provides backup battery power extension for ProcessLogix systems to maintain memory retention functions during loss of primary power.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWhat voltage does the battery backup provide?\u003c\/p\u003e\n\u003cp\u003eThe module provides a 3 VDC backup voltage output for the supported ProcessLogix backup circuit.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWhat is the operating supply voltage of the module?\u003c\/p\u003e\n\u003cp\u003eThe 1757-BEM operates from a 24 VDC supply input within the ProcessLogix hardware configuration.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWhat is the maximum power consumption of the module?\u003c\/p\u003e\n\u003cp\u003eThe maximum power consumption is specified as 0.5 W during operation.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWhat is the standby current consumption?\u003c\/p\u003e\n\u003cp\u003eThe standby current draw is specified as less than 10 uA for backup monitoring conditions.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eHow long can the battery maintain backup operation?\u003c\/p\u003e\n\u003cp\u003eThe module specification indicates up to 240 hours of full-charge backup capability under rated conditions.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWhat is the expected battery service life?\u003c\/p\u003e\n\u003cp\u003eThe specified battery life range is 5 to 10 years depending on operating conditions and system usage.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eDoes the 1757-BEM execute control logic?\u003c\/p\u003e\n\u003cp\u003eNo. The module provides battery backup power support and does not execute controller application programs.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":46066422513837,"sku":"1757-BEM","price":88.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0733\/1613\/9181\/files\/1757-BEM-0.jpg?v=1786348622","url":"https:\/\/www.maxwellplc.com\/products\/1757-bem-allen-bradley-battery-extension-module-processlogix","provider":"Maxwell PLC Ltd","version":"1.0","type":"link"}