{"product_id":"allen-bradley-1771-ian-plc-5-digital-ac-dc-input-module","title":"Allen Bradley 1771-IAN PLC-5 Digital AC\/DC Input Module","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eAllen Bradley 1771-IAN\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eserves as a high-density discrete interface for the PLC-5 platform. This module senses the On\/Off status of field devices such as limit switches, pushbuttons, and proximity sensors operating at a 120V nominal voltage. By providing 32 input points in a single-slot format, the 1771-IAN maximizes I\/O density within the 1771 Universal I\/O chassis. We supply this module as\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e100% Brand New and Factory Original\u003c\/strong\u003e, ensuring your legacy control architecture maintains peak performance with pristine, zero-hour hardware.\u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cp\u003eThe 1771-IAN utilizes an optimized circuit design to convert high-voltage field signals into logic-level data for the backplane:\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr class=\"firstRow\"\u003e\n\u003ctd\u003e\u003cstrong\u003eFeature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eNumber of Inputs\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e32 Inputs (Organized in 4 Sets of 8)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eVoltage Category\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e120 Volts AC\/DC\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eAC Operating Voltage\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e85–138 Volts\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eBackplane Current Draw\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e280 mA\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eMax AC Off-State Current\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e3.0 mA\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eMax DC Off-State Current\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e0.8 mA\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eTypical AC Signal Delay (On)\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e10 ms (± 7 ms)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eTypical AC Signal Delay (Off)\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e20 ms (± 15 ms)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eWiring Arm Compatibility\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e1771-WN\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e1.00 lbs (0.45 kg)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eEngineering Advantages\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eHigh-Density Cabinet Optimization:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe 32-point architecture allows engineers to double the input capacity of a standard 1771 chassis compared to traditional 16-point modules. This eliminates the need for additional chassis or remote I\/O racks in hardware-intensive applications.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eVersatile AC\/DC Sensing:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe internal opto-isolation circuitry accepts both AC and DC signals within the 120V category. This flexibility permits the integration of diverse field devices onto a single module, simplifying wiring layouts and reducing spare parts inventory.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eRobust Signal Filtering:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eIntegrated RC filtering and hardware delays suppress electrical noise and contact bounce common in industrial environments. This ensures the PLC processor receives clean, debounced state transitions, preventing logic errors during motor starts or high-voltage switching events.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eGrouped Isolation Logic:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe module organizes inputs into four isolated groups of eight. This configuration allows the use of different power phases or separate power sources for each group, providing a layer of protection against localized circuit failures and ground loops.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFAQs\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eIs the 1771-IAN unit truly brand new?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes. We guarantee this unit is\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e100% Brand New\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eand ships in its original factory-sealed Allen Bradley packaging. We do not provide refurbished or used surplus modules, ensuring you receive the full industrial lifespan and factory-tight tolerances.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCan I use the 1771-IAN with a PLC-2 or PLC-3 system?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes. The 1771-IAN is compatible with any 1771 Universal I\/O chassis, meaning it functions correctly with PLC-2, PLC-3, and PLC-5 controllers, provided the chassis backplane power supply can meet the 280 mA current requirement.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eWhich wiring arm must I use for installation?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis module requires the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1771-WN\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ewiring arm. The wiring arm allows you to replace the module without disconnecting the field wires, significantly reducing maintenance downtime.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eHow does the module handle leakage current from solid-state sensors?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe 1771-IAN features a maximum Off-state current threshold of 3.0 mA (AC). If your field sensors (such as certain 2-wire proximity switches) exhibit leakage current higher than this value, you must install a bleeder resistor across the input to prevent \"false-on\" signals.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":52863964348725,"sku":"1771-IAN","price":66.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0973\/7630\/5461\/files\/1771-IAN.png?v=1778483114","url":"https:\/\/www.5gplc.com\/products\/allen-bradley-1771-ian-plc-5-digital-ac-dc-input-module","provider":"High Five PLC Solution Limited","version":"1.0","type":"link"}