{"product_id":"allen-bradley-1791-32a0-block-i-o-32-input-rio-module","title":"Allen-Bradley 1791-32A0 Block I\/O | 32 Input RIO Module","description":"\u003ch2\u003e\u003cstrong\u003eAllen-Bradley 1791-32A0 Discrete Input Module: Technical Overview\u003c\/strong\u003e\u003c\/h2\u003e\n\u003ch3\u003e\u003cstrong\u003eCore Product Specifications\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Allen-Bradley\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel Number:\u003c\/strong\u003e \u003cstrong\u003e\u003cspan style=\"color: #e74c3c;\"\u003e1791-32A0\u003c\/span\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Line:\u003c\/strong\u003e 1791 Block I\/O\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModule Type:\u003c\/strong\u003e Discrete AC Input Module\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTotal Input Channels:\u003c\/strong\u003e 32 Channels\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInput Grouping:\u003c\/strong\u003e 4 Groups of 8 Channels Each\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNominal Input Voltage:\u003c\/strong\u003e \u003cspan style=\"color: #e74c3c;\"\u003e120V AC\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eElectrical Ratings \u0026amp; Performance\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eThe \u003cstrong\u003e1791-32A0\u003c\/strong\u003e on-state input range is \u003cspan style=\"color: #e74c3c;\"\u003e79-132V AC, 47-63 Hz\u003c\/span\u003e.\u003c\/li\u003e\n\u003cli\u003eOn-state current is 5 mA min at 79V, 12.3 mA max at 132V AC.\u003c\/li\u003e\n\u003cli\u003eOff-state leakage is a maximum of 35V AC at 2.3 mA.\u003c\/li\u003e\n\u003cli\u003eEach input channel has an impedance of 15KΩ at 60 Hz.\u003c\/li\u003e\n\u003cli\u003eInput signal delay is 1 ms (OFF to ON) and max 26 ms (ON to OFF).\u003c\/li\u003e\n\u003cli\u003eExternal power requirement is 85-132V AC, 47-63 Hz at 150 mA.\u003c\/li\u003e\n\u003cli\u003eMaximum module power dissipation is 13.62 Watts.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eIsolation \u0026amp; Environmental Ratings\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eIsolation (I\/O Group to Group\/Logic):\u003c\/strong\u003e 1250V AC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIsolation (Power Supply to RIO):\u003c\/strong\u003e 500V AC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperating Temperature:\u003c\/strong\u003e \u003cspan style=\"color: #e74c3c;\"\u003e0 to 60°C (32 to 140°F)\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStorage Temperature:\u003c\/strong\u003e -40 to 85°C (-40 to 185°F)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRelative Humidity:\u003c\/strong\u003e 5% to 95% (non-condensing)\u003c\/li\u003e\n\u003cli\u003eThermal dissipation is a maximum of 46.44 BTU per hour.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eFrequently Asked Questions (FAQ)\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: What is the input voltage range for this module?\u003c\/strong\u003e\u003cbr\u003eA: The \u003cstrong\u003e1791-32A0\u003c\/strong\u003e operates from \u003cspan style=\"color: #e74c3c;\"\u003e79 to 132 Volts AC, 47-63 Hz\u003c\/span\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: Does this module have any outputs?\u003c\/strong\u003e\u003cbr\u003eA: No, the \u003cstrong\u003e1791-32A0\u003c\/strong\u003e is a discrete input-only module with 32 channels.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: What communication protocol does it use?\u003c\/strong\u003e\u003cbr\u003eA: It uses the Remote I\/O (RIO) protocol for distributed control systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: How are the 32 inputs organized?\u003c\/strong\u003e\u003cbr\u003eA: Inputs are divided into four isolated groups, each containing eight channels.\u003cstrong\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e© 2026 NexAuto Technology Limited. All rights reserved.\u003cbr\u003eOriginal Source: \u003ca href=\"https:\/\/www.nex-auto.com\/\"\u003ehttps:\/\/www.nex-auto.com\/\u003c\/a\u003e\u003cbr\u003eContact: \u003ca href=\"mailto:sales@nex-auto.com\"\u003esales@nex-auto.com\u003c\/a\u003e | Phone: \u003ca href=\"https:\/\/wa.me\/8615392429628\"\u003e+86 153 9242 9628\u003c\/a\u003e\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":47285606842626,"sku":"1791-32A0","price":253.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0722\/7280\/6146\/files\/1791-32A0.jpg?v=1770801446","url":"https:\/\/www.nex-auto.com\/fa\/products\/allen-bradley-1791-32a0-block-i-o-32-input-rio-module","provider":"NexAuto Technology Limited","version":"1.0","type":"link"}