{"product_id":"allen-bradley-1791-16bc-block-i-o-module","title":"Allen-Bradley 1791-16BC Block I\/O Module","description":"\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eAllen-Bradley 1791-16BC\u003c\/strong\u003e, also cataloged as the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1791-16BC\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eBlock I\/O Module, operates as a dedicated hardware component for high-density digital signal interfacing within distributed I\/O network platforms. The module provides 16 digital inputs organized into two groups of 8 and 16 digital outputs, executing logic state transitions based on a 10-30 VDC field power supply.\u003c\/p\u003e\n\u003ch3\u003eHardware Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr class=\"firstRow\"\u003e\n\u003ctd\u003e\u003cstrong\u003eParameter\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\u003eModel\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e1791-16BC\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eBrand\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eAllen-Bradley\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eOrigin\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eUSA\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eWeight\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e0.78 kg\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eShipping Dimensions\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e11.2 x 9.7 x 17.5 cm\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eOperating Temp\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eConsult manufacturer derating charts\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003ePower Consumption\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e10-30 VDC\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eInput Capacity\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e16 (2 groups of 8)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eOutput Signal Delay\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e0.5 ms (on) \/ 1.0 ms (off)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eOff-state Current\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e2.5 mA (min) \/ 11.0 mA (max @ 30 V)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eInput Impedance\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\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eDeterministic Industrial Control Integration\u003c\/h3\u003e\n\u003cp\u003eThe 1791-16BC architecture utilizes hardened circuit designs to ensure signal stability in high-noise environments. Integration within Allen-Bradley control ecosystems relies on deterministic fieldbus timing, ensuring that I\/O density scaling does not impact cyclic update rates. Firmware compatibility across the 1791-16BC\/B and 1791-16BC\/C revisions maintains backward compatibility with legacy control systems while adhering to established input voltage thresholds.\u003c\/p\u003e\n\u003ch3\u003eOrdering Information\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003eIncludes: One (1) 1791-16BC I\/O Block Module.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eNote: This unit was discontinued by the manufacturer effective 06\/30\/2015.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eAdditional components: Requires external field connectors for I\/O signal termination.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eField Installation Protocols\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003eMounting: Secure the block module to a vibration-dampened surface using the provided mounting holes to maintain structural integrity.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eGrounding: Connect the chassis ground terminal to a common reference ground to prevent potential differences between the module and field devices.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWiring: Ensure wire gauges are compliant with local electrical codes for 24 VDC operation; observe current ratings to prevent thermal accumulation.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSignal separation: Isolate input and output signal bundles from high-voltage AC cabling to minimize inductive noise injection.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eDelivery Information\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003eDelivery time: 2-7 days when payment finish.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eShipment: Transported via DHL\/FEDEX\/UPS.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003ePackaging: Utilization of anti-static industrial packaging to prevent electrostatic discharge and mechanical stress during transit.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: Are the 16 inputs and 16 outputs isolated from each other?\u003c\/p\u003e\n\u003cp\u003eA: The inputs are grouped into two sets of 8. Logic and field power isolation should be verified against the specific hardware revision (e.g., 1791-16BC\/B).\u003c\/p\u003e\n\u003cp\u003eQ: Can this module be used in hot-swap configurations?\u003c\/p\u003e\n\u003cp\u003eA: No, this block I\/O module does not support hot-swapping; power must be isolated from the unit before removing or installing the device.\u003c\/p\u003e\n\u003cp\u003eQ: What is the maximum voltage ripple recommended for the 24 VDC supply?\u003c\/p\u003e\n\u003cp\u003eA: To ensure reliable operation and prevent false triggering of inputs, keep the supply ripple within 5% of the nominal 24 VDC.\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":46066453938349,"sku":"1791-16BC","price":88.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0733\/1613\/9181\/files\/1791-16BC-1.jpg?v=1780564811","url":"https:\/\/www.maxwellplc.com\/products\/allen-bradley-1791-16bc-block-i-o-module","provider":"Maxwell PLC Ltd","version":"1.0","type":"link"}