{"product_id":"1771-ez-allen-bradley-i-o-extender","title":"1771-EZ Allen-Bradley I\/O Extender","description":"\u003ch2\u003eAllen-Bradley 1771-EZ I\/O Extender Module\u003c\/h2\u003e\n\u003cp\u003eConfigured for I\/O chassis expansion in PLC-1771 Universal I\/O systems, the \u003cstrong\u003eAllen-Bradley 1771-EZ\u003c\/strong\u003e (\u003cstrong\u003e1771-EZ\u003c\/strong\u003e I\/O Extender Module) provides direct physical backplane extension and communication execution between the processor or adapter interface and additional I\/O modules.\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\u003e1771-EZ\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\u003e2.00 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003eDraws power from chassis backplane; consumption not specified\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModule Type\u003c\/td\u003e\n\u003ctd\u003eI\/O Extender Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatibility\u003c\/td\u003e\n\u003ctd\u003eAllen-Bradley PLC-1771 Universal I\/O chassis\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAddressing Modes\u003c\/td\u003e\n\u003ctd\u003e1-slot, 2-slot, and 1\/2-slot addressing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunication\u003c\/td\u003e\n\u003ctd\u003eExtended backplane communication for additional I\/O modules\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInstallation Type\u003c\/td\u003e\n\u003ctd\u003eExtender slot mounting\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIsolation\u003c\/td\u003e\n\u003ctd\u003eElectrical isolation and filtering circuits\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIndicators\u003c\/td\u003e\n\u003ctd\u003eFront-panel LED status indicators\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eBackplane Communication and I\/O Density Scaling\u003c\/h3\u003e\n\u003cp\u003eThe 1771-EZ provides chassis expansion capability by extending PLC-1771 backplane communication paths to additional I\/O module assemblies. The module supports I\/O density scaling by allowing additional modules to be integrated while maintaining processor-to-module data exchange through the extended backplane interface.\u003c\/p\u003e\n\u003cp\u003eThe extender module follows Allen-Bradley PLC architecture requirements for backplane bus communication and supports system configurations using different addressing modes. Electrical isolation and filtering circuits are implemented to reduce interference effects between connected control hardware.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: What function does the 1771-EZ perform in a PLC-1771 system?\u003cbr\u003eA: The 1771-EZ extends the I\/O chassis capacity by providing an additional communication path between the controller system and expanded I\/O modules.\u003c\/p\u003e\n\u003cp\u003eQ: Does the 1771-EZ require a separate external power supply?\u003cbr\u003eA: No. The module receives and distributes power through the chassis backplane interface. The total module load must remain within the chassis power supply capacity.\u003c\/p\u003e\n\u003cp\u003eQ: How is incorrect module installation prevented?\u003cbr\u003eA: The PLC-1771 chassis uses mechanical keying elements to prevent incorrect insertion positions during module installation.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cp\u003eInstall the 1771-EZ in the designated extender slot of the PLC-1771 chassis assembly. Remove system power before inserting or removing the module to prevent backplane electrical disturbances.\u003c\/p\u003e\n\u003cp\u003eVerify that the module connector is properly aligned with the chassis backplane interface. Maintain separation between low-level signal wiring and high-voltage AC wiring to reduce electromagnetic interference.\u003c\/p\u003e\n\u003cp\u003eFor systems containing analog input or output modules, apply proper cable shielding and grounding practices. Connect cable shields according to the control system grounding design and avoid parallel routing with high-noise power conductors. Confirm total backplane current demand before adding further I\/O modules to the expanded chassis.\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":43668316586074,"sku":"1771-EZ","price":123.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0612\/4601\/3530\/files\/1771-EZ2.jpg?v=1784271383","url":"https:\/\/www.plcmasters.com\/products\/1771-ez-allen-bradley-i-o-extender","provider":"PLC Masters Ltd.","version":"1.0","type":"link"}