{"product_id":"analog-i-o-module-allen-bradley-1791-n4c2","title":"Analog I\/O Module Allen-Bradley 1791-N4C2","description":"\u003ch2\u003e\u003cstrong\u003eProduct Overview: Allen-Bradley 1791-N4C2 Analog 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: #e74c3c;\"\u003eAllen-Bradley\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e \u003cstrong\u003e\u003cspan style=\"color: #e74c3c;\"\u003e1791-N4C2\u003c\/span\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries:\u003c\/strong\u003e 1791 Block I\/O\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModule Type:\u003c\/strong\u003e Combination Analog Input \/ Output Module\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTotal Channels:\u003c\/strong\u003e 6 Points (4 Inputs, 2 Outputs)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAnalog Inputs:\u003c\/strong\u003e 4 Channels, Selectable Voltage or Current\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAnalog Outputs:\u003c\/strong\u003e 2 Channels, 0-20 mA Current\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInput Impedance:\u003c\/strong\u003e 10 Megohms\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutput Impedance:\u003c\/strong\u003e Less than 1 Ohm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBase Accuracy:\u003c\/strong\u003e \u003cstrong\u003e\u003cspan style=\"color: #27ae60;\"\u003e0.1% at 25°C\u003c\/span\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUpdate Rate:\u003c\/strong\u003e 10 ms per channel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower Dissipation:\u003c\/strong\u003e 16.9 Watts Maximum\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 1.25 lbs (0.57 kg)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eAnalog Input Characteristics\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eThe four input channels are \u003cstrong\u003e\u003cspan style=\"color: #2980b9;\"\u003eindividually configurable\u003c\/span\u003e\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eYou can set all inputs as voltage or current signals based on your application needs.\u003c\/li\u003e\n\u003cli\u003eThe module supports both \u003cstrong\u003e\u003cspan style=\"color: #27ae60;\"\u003esingle-ended and differential\u003c\/span\u003e\u003c\/strong\u003e voltage input wiring.\u003c\/li\u003e\n\u003cli\u003eIt includes a built-in \u003cstrong\u003e\u003cspan style=\"color: #27ae60;\"\u003e24VDC current-limited power source\u003c\/span\u003e\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eThis internal supply powers loop-powered transducers like 2-wire transmitters.\u003c\/li\u003e\n\u003cli\u003eThe high 10-Megohm input impedance minimizes signal loading on connected devices.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eCompatibility \u0026amp; Communication\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eThe \u003cstrong\u003e1791-N4C2\u003c\/strong\u003e is compatible with major Allen-Bradley PLC families.\u003c\/li\u003e\n\u003cli\u003eIt works with \u003cstrong\u003ePLC-2, PLC-3, and PLC-5\u003c\/strong\u003e series controllers.\u003c\/li\u003e\n\u003cli\u003eThis module also communicates with \u003cstrong\u003eSLC 500\u003c\/strong\u003e controllers via discrete transfer.\u003c\/li\u003e\n\u003cli\u003eIt connects to the controller via a standard \u003cstrong\u003eRemote I\/O (RIO)\u003c\/strong\u003e network link.\u003c\/li\u003e\n\u003cli\u003eThe module handles all signal conditioning and conversion internally.\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 types of signals can the 1791-N4C2 inputs read?\u003c\/strong\u003e\u003cbr\u003eA: Each of the four inputs can be configured for \u003cstrong\u003e\u003cspan style=\"color: #27ae60;\"\u003evoltage or current\u003c\/span\u003e\u003c\/strong\u003e analog signals.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: What is the output signal type and range?\u003c\/strong\u003e\u003cbr\u003eA: It has two outputs that provide a \u003cstrong\u003e\u003cspan style=\"color: #27ae60;\"\u003e0-20 mA current signal\u003c\/span\u003e\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: What is the accuracy of this analog module?\u003c\/strong\u003e\u003cbr\u003eA: The module has a high \u003cstrong\u003e\u003cspan style=\"color: #27ae60;\"\u003e0.1% accuracy at 25°C\u003c\/span\u003e\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: Can this module power field transmitters?\u003c\/strong\u003e\u003cbr\u003eA: Yes, it includes a 24VDC source to power \u003cstrong\u003e\u003cspan style=\"color: #27ae60;\"\u003eloop-powered (2-wire) transmitters\u003c\/span\u003e\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: Is the 1791-N4C2 in stock?\u003c\/strong\u003e\u003cbr\u003eA: Yes, we have original stock available for fast delivery.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: What is your return policy?\u003c\/strong\u003e\u003cbr\u003eA: We offer a full \u003cstrong\u003e\u003cspan style=\"color: #27ae60;\"\u003e30-day return policy\u003c\/span\u003e\u003c\/strong\u003e for your confidence.\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":47289564692738,"sku":"1791-N4C2","price":253.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0722\/7280\/6146\/files\/1791-N4C2.jpg?v=1773892752","url":"https:\/\/www.nex-auto.com\/ru\/products\/analog-i-o-module-allen-bradley-1791-n4c2","provider":"NexAuto Technology Limited","version":"1.0","type":"link"}