{"product_id":"allen-bradley-1791-8bc-block-i-o-module-24vdc","title":"Allen-Bradley 1791-8BC Block I\/O Module | 24VDC","description":"\u003ch2\u003e\u003cstrong\u003eProduct Overview: Allen-Bradley 1791-8BC 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;\"\u003e1791-8BC\u003c\/span\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries:\u003c\/strong\u003e Block I\/O\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Combination Discrete Input\/Output Module\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eI\/O Channels:\u003c\/strong\u003e 16 Points Total (8 Inputs, 8 Outputs)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSignal Voltage:\u003c\/strong\u003e 24 VDC Nominal (10-30 VDC Range)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExternal Power Supply:\u003c\/strong\u003e 19.2–30V DC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Current Draw:\u003c\/strong\u003e 300 mA\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCommunication Protocol:\u003c\/strong\u003e Remote I\/O (RIO)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eDetailed Input \u0026amp; Output Characteristics\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eThe eight DC inputs accept an on-state voltage from 10 to 30 VDC.\u003c\/li\u003e\n\u003cli\u003eEach input requires a minimum \u003cstrong\u003e\u003cspan style=\"color: #27ae60;\"\u003eon-state current of 2.5 mA at 10V\u003c\/span\u003e\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eThe maximum input current is \u003cstrong\u003e\u003cspan style=\"color: #27ae60;\"\u003e11.0 mA at 30V\u003c\/span\u003e\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eThe eight DC outputs source power within the same 10-30 VDC range.\u003c\/li\u003e\n\u003cli\u003eOutput current rating depends on mounting and temperature.\u003c\/li\u003e\n\u003cli\u003eFor \u003cstrong\u003e\u003cspan style=\"color: #2980b9;\"\u003evertical mounting\u003c\/span\u003e\u003c\/strong\u003e, the rating is \u003cstrong\u003e\u003cspan style=\"color: #27ae60;\"\u003e1A at 30°C or 500mA at 60°C\u003c\/span\u003e\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eFor \u003cstrong\u003e\u003cspan style=\"color: #2980b9;\"\u003ehorizontal mounting\u003c\/span\u003e\u003c\/strong\u003e, the rating is \u003cstrong\u003e\u003cspan style=\"color: #27ae60;\"\u003e500mA at 30°C or 250mA at 60°C\u003c\/span\u003e\u003c\/strong\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eInstallation \u0026amp; Communication Setup\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eInstall the module on a standard DIN rail for a secure and organized panel layout.\u003c\/li\u003e\n\u003cli\u003eConnect the RIO network using terminals 6 (BLU), 7 (SHD), and 8 (CLR).\u003c\/li\u003e\n\u003cli\u003eUse a Belden 9463 or similar 3-wire cable for communication.\u003c\/li\u003e\n\u003cli\u003eYou can set the data transmission rate to 57.6K, 115.2K, or 230.4K baud.\u003c\/li\u003e\n\u003cli\u003eAlways install a terminating resistor at the first and last node of the RIO network.\u003c\/li\u003e\n\u003cli\u003eUse a \u003cstrong\u003e\u003cspan style=\"color: #27ae60;\"\u003e150-ohm resistor for 57.6K\/115.2K baud rates\u003c\/span\u003e\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eUse an \u003cstrong\u003e\u003cspan style=\"color: #27ae60;\"\u003e82-ohm resistor for the 230.4K baud rate\u003c\/span\u003e\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eConnect the terminating resistor across the BLU (6) and CLR (8) terminals.\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 the Allen-Bradley 1791-8BC module new?\u003c\/strong\u003e\u003cbr\u003eA: Yes, we supply only \u003cstrong\u003e\u003cspan style=\"color: #27ae60;\"\u003ebrand new and original\u003c\/span\u003e\u003c\/strong\u003e Allen-Bradley products.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: Do you have the 1791-8BC in stock?\u003c\/strong\u003e\u003cbr\u003eA: Yes, we maintain stock for this model to ensure fast delivery.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: What is the lead time for shipping?\u003c\/strong\u003e\u003cbr\u003eA: We process orders and ship within \u003cstrong\u003e\u003cspan style=\"color: #27ae60;\"\u003e5 business days\u003c\/span\u003e\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: Which logistics services do you use?\u003c\/strong\u003e\u003cbr\u003eA: We ship internationally via major carriers like \u003cstrong\u003e\u003cspan style=\"color: #27ae60;\"\u003eDHL, FedEx, and UPS\u003c\/span\u003e\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: What is the output current for this module?\u003c\/strong\u003e\u003cbr\u003eA: The output current varies. It supports up to 1A at 30°C when mounted vertically.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: Does this module support modern controllers?\u003c\/strong\u003e\u003cbr\u003eA: Yes, it works with CompactLogix and ControlLogix via a \u003cstrong\u003e\u003cspan style=\"color: #27ae60;\"\u003eRemote I\/O adapter\u003c\/span\u003e\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: What is your return policy?\u003c\/strong\u003e\u003cbr\u003eA: We offer a \u003cstrong\u003e\u003cspan style=\"color: #27ae60;\"\u003e30-day return policy\u003c\/span\u003e\u003c\/strong\u003e for your peace of mind.\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":47289545588994,"sku":"1791-8BC","price":215.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0722\/7280\/6146\/files\/1791-8BC.jpg?v=1773892274","url":"https:\/\/www.nex-auto.com\/ar\/products\/allen-bradley-1791-8bc-block-i-o-module-24vdc","provider":"NexAuto Technology Limited","version":"1.0","type":"link"}