{"product_id":"allen-bradley-1771-ind-digital-ac-dc-input-module","title":"Allen-Bradley 1771-IND Digital AC\/DC Input Module","description":"\u003ch2\u003eAllen-Bradley 1771-IND Digital AC\/DC Input Module\u003c\/h2\u003e\n\u003cp\u003eConfigured for discrete AC\/DC field signal acquisition in PLC-5 1771 I\/O systems, the \u003cstrong\u003eAllen-Bradley 1771-IND\u003c\/strong\u003e (\u003cstrong\u003e1771-IND\u003c\/strong\u003e Digital AC\/DC Input Module) provides direct physical\/electrical execution for 16-point input monitoring through a rack-mounted interface.\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-IND\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\u003eUSA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eDigital AC\/DC Input Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSeries\u003c\/td\u003e\n\u003ctd\u003ePLC-5 1771 I\/O\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNumber of Inputs\u003c\/td\u003e\n\u003ctd\u003e16 inputs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVoltage Category\u003c\/td\u003e\n\u003ctd\u003e24 VAC\/DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAC Operating Voltage\u003c\/td\u003e\n\u003ctd\u003e16-30 VAC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDC Operating Voltage\u003c\/td\u003e\n\u003ctd\u003e9-30 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBackplane Current\u003c\/td\u003e\n\u003ctd\u003e250 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax AC Off-State Current\u003c\/td\u003e\n\u003ctd\u003e1.5 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax DC Off-State Current\u003c\/td\u003e\n\u003ctd\u003e0.6 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTypical AC Signal Delay (On)\u003c\/td\u003e\n\u003ctd\u003e35 +\/- 10 ms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTypical DC Signal Delay (On)\u003c\/td\u003e\n\u003ctd\u003e10 ms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTypical AC Signal Delay (Off)\u003c\/td\u003e\n\u003ctd\u003e45 +\/- 15 ms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTypical DC Signal Delay (Off)\u003c\/td\u003e\n\u003ctd\u003e50 ms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWiring Arm\u003c\/td\u003e\n\u003ctd\u003e1771-WH\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting\u003c\/td\u003e\n\u003ctd\u003eRack Mount\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e2.05 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003ePLC-5 Discrete Input Interface Characteristics\u003c\/h3\u003e\n\u003cp\u003eThe 1771-IND module provides AC\/DC digital input processing for Allen-Bradley PLC-5 control architectures. The module supports 16 field input points and converts external switching signals into controller-readable digital states through the 1771 backplane interface.\u003c\/p\u003e\n\u003cp\u003eThe module uses Allen-Bradley PLC-5 I\/O density scaling methods for rack-based installations. Its backplane communication structure supports deterministic data exchange between the input module and PLC processor. The 1771-WH wiring arm provides the field connection interface for installation and maintenance operations.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: What voltage levels can the 1771-IND accept?\u003cbr\u003eA: The module accepts 16-30 VAC input signals and 9-30 VDC input signals within the specified operating range.\u003c\/p\u003e\n\u003cp\u003eQ: How many input channels are available on the module?\u003cbr\u003eA: The 1771-IND provides 16 digital AC\/DC input channels.\u003c\/p\u003e\n\u003cp\u003eQ: What backplane power requirement does the module have?\u003cbr\u003eA: The module requires 250 mA from the PLC-5 1771 backplane supply.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cp\u003eInstall the 1771-IND module into a compatible Bulletin 1771 I\/O chassis slot after disconnecting backplane power. Connect field wiring through the supplied 1771-WH wiring arm.\u003c\/p\u003e\n\u003cp\u003eRoute AC\/DC input conductors separately from communication and low-level signal wiring to reduce electrical interference. Verify field voltage compatibility before connecting external devices.\u003c\/p\u003e\n\u003cp\u003eMaintain proper cabinet grounding and follow PLC-5 system installation procedures for rack assembly, wiring separation, and module replacement operations.\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":43681489453146,"sku":"1771-IND","price":123.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0612\/4601\/3530\/files\/1771-IND2.jpg?v=1784533581","url":"https:\/\/www.plcmasters.com\/products\/allen-bradley-1771-ind-digital-ac-dc-input-module","provider":"PLC Masters Ltd.","version":"1.0","type":"link"}