{"product_id":"allen-bradley-1791-16ac-block-i-o-module","title":"Allen-Bradley 1791-16AC Block I\/O Module","description":"\u003ch2\u003e\u003cstrong\u003eAllen-Bradley 1791-16AC 32-Point AC Input\/Output Block I\/O Module\u003c\/strong\u003e\u003c\/h2\u003e\n\u003ch3\u003e\u003cstrong\u003eKey Technical Specifications\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e \u003cspan style=\"color: #2c3e50;\"\u003eAllen-Bradley\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e \u003cspan style=\"color: #2c3e50;\"\u003e\u003cstrong\u003e1791-16AC\u003c\/strong\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Line:\u003c\/strong\u003e 1791 Block I\/O Series\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInput Channels:\u003c\/strong\u003e 16 points (2 groups of 8)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutput Channels:\u003c\/strong\u003e 16 points (2 groups of 8)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eI\/O Type:\u003c\/strong\u003e 120V AC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInput On-State Voltage Range:\u003c\/strong\u003e \u003cspan style=\"color: #e74c3c;\"\u003e79 to 132V AC, 47-63 Hz\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNominal Input Current:\u003c\/strong\u003e 11 mA\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutput Voltage Range:\u003c\/strong\u003e 20 to 132V AC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExternal Power Supply:\u003c\/strong\u003e 85-132V AC, 47-63 Hz, 150 mA @ 132VAC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInput Response Time:\u003c\/strong\u003e 1.0ms (OFF to ON), 26ms (ON to OFF)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutput Response Time:\u003c\/strong\u003e 1.0ms (OFF to ON), 8.3ms @ 60Hz \/ 10.0ms @ 50Hz (ON to OFF)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Power Dissipation:\u003c\/strong\u003e 31.3 Watts\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eMounting \u0026amp; Output Current Ratings\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eThe \u003cstrong\u003e1791-16AC\u003c\/strong\u003e supports flexible \u003cspan style=\"color: #2c3e50;\"\u003evertical or horizontal mounting\u003c\/span\u003e in your control panel.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutput Current (Vertical Mount):\u003c\/strong\u003e \u003cspan style=\"color: #e74c3c;\"\u003e600mA per point at 30°C\u003c\/span\u003e and \u003cspan style=\"color: #e74c3c;\"\u003e300mA at 60°C\u003c\/span\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutput Current (Horizontal Mount):\u003c\/strong\u003e \u003cspan style=\"color: #e74c3c;\"\u003e300mA per point at 30°C\u003c\/span\u003e and \u003cspan style=\"color: #e74c3c;\"\u003e150mA at 60°C\u003c\/span\u003e.\u003c\/li\u003e\n\u003cli\u003eVertical mounting provides better cooling, allowing for \u003cspan style=\"color: #2c3e50;\"\u003ehigher continuous output current ratings\u003c\/span\u003e.\u003c\/li\u003e\n\u003cli\u003eAlways ensure adequate ventilation space around the module for optimal thermal performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eInstallation \u0026amp; Compatibility\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eThis module functions as a complete \u003cspan style=\"color: #2c3e50;\"\u003eRemote I\/O adapter\u003c\/span\u003e with an integrated communication interface and power supply.\u003c\/li\u003e\n\u003cli\u003eIt connects to a main controller via a \u003cspan style=\"color: #2c3e50;\"\u003edaisy-chain topology\u003c\/span\u003e using the Universal Remote I\/O protocol.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Input Devices:\u003c\/strong\u003e Proximity switches, limit switches, pushbuttons, float switches, and other contact closures.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Output Loads:\u003c\/strong\u003e Pilot lights, relay coils, solenoids, alarms (horns\/buzzers), and other AC devices.\u003c\/li\u003e\n\u003cli\u003eThe module provides robust isolation: 500V AC (Power to RIO) and 1250V AC (between I\/O groups and logic).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003ePackaging \u0026amp; Shipping\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eEvery \u003cstrong\u003e1791-16AC\u003c\/strong\u003e module is supplied as a \u003cstrong\u003ebrand new, original\u003c\/strong\u003e unit from Allen-Bradley.\u003c\/li\u003e\n\u003cli\u003eWe pack all items securely to guarantee they arrive in perfect condition.\u003c\/li\u003e\n\u003cli\u003eWe ship worldwide using reliable express carriers including DHL, FedEx, and UPS.\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: Is this a combined input and output module?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Yes. The \u003cstrong\u003e1791-16AC\u003c\/strong\u003e uniquely provides \u003cspan style=\"color: #e74c3c;\"\u003e16 AC input points and 16 AC output points\u003c\/span\u003e in one block.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: Why does the output current rating change with mounting?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Current rating depends on cooling. \u003cspan style=\"color: #2c3e50;\"\u003eVertical mounting allows better heat dissipation\u003c\/span\u003e, supporting higher current (e.g., 600mA at 30°C) than horizontal mounting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: What is the operating voltage range?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Inputs operate from 79-132V AC. Outputs can switch loads from 20-132V AC. The external supply is 85-132V AC.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: Do you have stock available?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Yes, we maintain stock of the \u003cstrong\u003e1791-16AC\u003c\/strong\u003e for prompt shipment.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: What is your shipping and return policy?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e We ship within \u003cstrong\u003e5 business days\u003c\/strong\u003e and offer a \u003cstrong\u003e30-day return policy\u003c\/strong\u003e for unused items in original packaging.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: Can this module be used in a Remote I\/O network?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Absolutely. The \u003cstrong\u003e1791-16AC\u003c\/strong\u003e is specifically designed as a \u003cspan style=\"color: #2c3e50;\"\u003eRemote I\/O block adapter\u003c\/span\u003e for distributed control architectures.\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":47285590950146,"sku":"1791-16AC","price":214.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0722\/7280\/6146\/files\/1791-16AC.jpg?v=1770794973","url":"https:\/\/www.nex-auto.com\/pl\/products\/allen-bradley-1791-16ac-block-i-o-module","provider":"NexAuto Technology Limited","version":"1.0","type":"link"}