{"product_id":"1771-ind-allen-bradley-plc-5-digital-input-module","title":"1771-IND | Allen Bradley | PLC-5 Digital Input Module","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eAllen Bradley 1771-IND\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eacts as a versatile digital interface for the legacy\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003ePLC-5\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eplatform. This module converts 24V AC or DC signals from field devices into logic levels accessible by the processor. Despite the manufacturer’s discontinuation of this series in March 2020, we offer this unit as\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e100% Brand New\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eoriginal stock. It provides an essential lifecycle extension for facilities running mission-critical PLC-5 architectures that require factory-fresh hardware to avoid unplanned downtime.\u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\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 Details\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\u003eManufacturer\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eAllen Bradley \/ Rockwell Automation\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eProduct Line\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003ePLC-5 1771 Universal I\/O\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eModule Type\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eDigital Input Module\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\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\u003e16 Points\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\u003e24V AC\/DC\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eOperating Voltage Range\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e20–30V AC\/DC\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eMounting\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e1771 Universal I\/O Chassis\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\u003e2.05 lbs (0.93 kg)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eStatus\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eBrand New Original Stock\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\u003eDual-Current Compatibility:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe 1771-IND accepts both\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e24V AC and 24V DC\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003esignals. This flexibility allows engineers to mix different sensor types or power sources within a single module, streamlining the I\/O rack layout and reducing the need for multiple card types.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eHigh-Density Legacy Support:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eWith 16 discrete points packed into a single-slot 1771 module, this unit maximizes the capacity of existing PLC-5 chassis. It allows for system expansion or critical replacement without requiring a complete migration to newer ControlLogix platforms.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eRugged Rack-Mount Design:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe module utilizes the classic 1771 gold-plated backplane connectors. This design resists vibration and oxidation, ensuring signal integrity in heavy industrial environments such as steel mills, automotive assembly lines, and chemical processing plants.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eInstant Restoration:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eBecause this unit is\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e100% Brand New\u003c\/strong\u003e, it eliminates the risks associated with refurbished \"surplus\" components, such as dried-out electrolytic capacitors or weakened solder joints. It slots directly into the existing swing-arm wiring, requiring zero software reconfiguration.\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\u003eCan the 1771-IND handle both AC and DC signals simultaneously?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe module circuitry supports both types; however, you should group inputs according to the power supply voltage used to maintain clear wiring standards and safety. Always verify that your field device voltage falls within the 20–30V range.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eSince the manufacturer discontinued this model in 2020, is this a used part?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eNo. We guarantee this 1771-IND is\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eBrand New\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eand has never been energized. It remains in its original factory packaging, providing the same performance specifications as a unit manufactured just before the discontinuation date.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eDoes this module require a specific Removable Terminal Block (RTB)?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe 1771-IND uses the standard 1771 wiring arm. This allows you to replace a failed module by simply unplugging the wiring arm and swapping the hardware, which preserves all existing field wiring and significantly reduces Mean Time To Repair (MTTR).\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eHow does this module communicate with the PLC-5 processor?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe module interfaces via the 1771 Universal I\/O backplane. The processor or remote I\/O adapter (such as a 1771-ASB) scans the 16-bit data word of the module and updates the input image table accordingly during every I\/O scan cycle.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":52804628873525,"sku":"1771-IND","price":66.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0973\/7630\/5461\/files\/1771-IND.png?v=1777529831","url":"https:\/\/www.5gplc.com\/products\/1771-ind-allen-bradley-plc-5-digital-input-module","provider":"High Five PLC Solution Limited","version":"1.0","type":"link"}