{"product_id":"1791-16b0-allen-bradley-block-i-o-16-point-dc-digital-input-module","title":"1791-16B0 | Allen Bradley | Block I\/O 16-Point DC Digital Input Module","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eAllen Bradley 1791-16B0\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003efunctions as a high-density standalone interface for DC digital field devices. This 16-point input block eliminates the need for separate chassis and backplanes by integrating power, communication, and I\/O into a single ruggedized unit. It interfaces seamlessly with controllers to monitor limit switches, proximity sensors, and pushbuttons. We supply this unit as\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e100% Brand New\u003c\/strong\u003e, ensuring the highest level of signal accuracy and mechanical durability for your automation network.\u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cp\u003eThe 1791-16B0 features two groups of eight inputs, providing a compact footprint for 24V DC signaling.\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr class=\"firstRow\"\u003e\n\u003ctd\u003e\u003cstrong\u003eFeature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eManufacturer\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eAllen Bradley (Rockwell Automation)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eInput Type\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e24V DC Digital Input\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eInputs per Block\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e16 (Organized in 2 groups of 8)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eOn-State Voltage Range\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e10–30V DC\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eOn-State Current\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e2.5 mA (min) to 11 mA (max)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eOff-State Voltage (max)\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e5V DC\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eInput Impedance\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e3.4 K Ohms\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003ePower Dissipation\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e11.1 Watts\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eThermal Dissipation\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e38 BTU\/hr\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eMaximum Wire Size\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e14 AWG (14 gauge)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eOperating Temperature\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e0°C to 60°C (32°F to 140°F)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e1.00 lbs (0.45 kg)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eEngineering Advantages\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eOptimized Signal Diagnostics:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eIndividual Status LEDs provide real-time visual feedback for every input channel. This feature allows maintenance teams to verify field-side sensor health instantly without connecting a laptop, significantly reducing troubleshooting time.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eSuperior Environmental Tolerance:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe module operates reliably in temperatures up to 60°C and maintains performance in humidity levels up to 95%. This robustness makes it ideal for non-climate-controlled factory floors or cabinets situated near high-heat process equipment.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eFlexible Field Wiring:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe terminal blocks accept up to 14 AWG wire. This heavy-gauge capacity prevents voltage drops over long cable runs and provides superior mechanical strength at the connection point, resisting wire pull-out in high-vibration environments.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCompact Block Architecture:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe 1791-16B0 integrates its own power supply and communication adapter. This design saves significant DIN rail space compared to traditional rack-mounted I\/O, making it the preferred choice for retrofitting small junction boxes or adding I\/O points to crowded control panels.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFAQs\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCan the 1791-16B0 handle high-speed pulse inputs?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe 1791-16B0 specifically targets standard discrete signaling (limit switches, pushbuttons). While it handles rapid on\/off states, you should verify the scan time of your RIO (Remote I\/O) link and the module's internal filtering to ensure it captures extremely short-duration pulses typical of high-speed encoders.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eDoes this block require a separate communication adapter?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eNo. The 1791 Block I\/O series contains the communication interface within the housing. You connect the Remote I\/O (RIO) cable directly to the block, allowing the PLC to address the 16 inputs as a standard I\/O rack.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the significance of the 2-group-of-8 architecture?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis grouping allows you to use two different power sources (commons) for the inputs if necessary. This electrical isolation between groups prevents a fault in one field-side circuit from disabling the entire 16-point block.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eHow does the 11.1W power dissipation affect my enclosure design?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe 38 BTU\/hr thermal dissipation requires adequate cabinet ventilation. If you mount multiple 1791-16B0 blocks in a single unventilated enclosure, calculate the total heat rise to ensure the internal temperature remains below the 60°C operating limit.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":52788091683125,"sku":"1791-16BO","price":66.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0973\/7630\/5461\/files\/1791-16BO.png?v=1777261325","url":"https:\/\/www.5gplc.com\/products\/1791-16b0-allen-bradley-block-i-o-16-point-dc-digital-input-module","provider":"High Five PLC Solution Limited","version":"1.0","type":"link"}