{"product_id":"1791-16a0-a-allen-bradley-block-i-o-input-module-series-1791","title":"1791-16A0\/A Allen-Bradley Block I\/O Input Module Series 1791","description":"\u003cp\u003eConfigured for discrete 120 VAC input signal acquisition within Allen-Bradley industrial control networks, the \u003cstrong\u003eAllen-Bradley 1791-16A0\/A\u003c\/strong\u003e (\u003cstrong\u003e1791-16A0\u003c\/strong\u003e Block I\/O Input Module) provides direct physical electrical execution.\u003c\/p\u003e\n\u003ch3\u003eSuffix Breakdown \u0026amp; Model Matrix\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e1791\u003c\/strong\u003e: Base product family identifier designating Allen-Bradley block I\/O hardware platforms.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e16A0\u003c\/strong\u003e: Configuration designator indicating a 16-channel 120 VAC input circuit topology.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\/A\u003c\/strong\u003e: Major hardware revision level suffix indicating the initial production release line of the printed circuit board assembly.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eHardware Specifications\u003c\/h3\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eParameter\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003e1791-16A0\/A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eAllen-Bradley\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eUnited States\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.5 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShipping Dimensions\u003c\/td\u003e\n\u003ctd\u003e7.6 x 17.8 x 10.2 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e0 deg C to 55 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e150 mA internal backplane draw\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Channels\u003c\/td\u003e\n\u003ctd\u003e16 discrete inputs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Voltage\u003c\/td\u003e\n\u003ctd\u003e120 VAC (50\/60 Hz)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTariff Code\u003c\/td\u003e\n\u003ctd\u003e8538907080\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eIndustrial Control \u0026amp; Drive Interface Integration\u003c\/h3\u003e\n\u003cp\u003eDesigned for integration into deterministic networks, the module interfaces directly with backplane communication buses. It handles deterministic state updates for alternating current field devices, maintaining timing synchronization across connected control nodes without firmware flash conflicts.\u003c\/p\u003e\n\u003ch3\u003ePackage Ordering Information\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1 x 1791-16A0\/A Block I\/O Input Module unit\u003c\/li\u003e\n\u003cli\u003e1 x Removable screw-clamp terminal block housing\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDIN-Rail Mounting\u003c\/strong\u003e: Secure the module firmly onto standard 35 mm DIN rails, ensuring the mechanical latch locks completely into position before wiring.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShielding and Grounding\u003c\/strong\u003e: Terminate all incoming 120 VAC signal cable shields directly to the designated enclosure grounding bar to mitigate electromagnetic interference.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClearance Requirements\u003c\/strong\u003e: Maintain a minimum horizontal and vertical clearance of 50 mm around the ventilation housing to support natural thermal heat dissipation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eWhat is the nominal input voltage rating for this module?\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe module accepts a nominal input voltage of 120 VAC operating at 50 or 60 Hz frequencies.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHow many input channels are available on the 1791-16A0\/A?\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe unit features a total of 16 discrete input channels configured in a high-density block layout.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eWhat is the current consumption drawn from the internal backplane?\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe module draws approximately 150 mA of current from the system backplane during active operation.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eIs this specific block I\/O module currently active or discontinued?\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis hardware item is officially discontinued by the manufacturer and is typically sourced as legacy spare stock.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eWhat is the exact physical weight of the hardware unit?\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe unboxed module weighs 0.5 kg, with overall shipping dimensions measuring 7.6 x 17.8 x 10.2 cm.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eWhat country is designated as the origin of manufacture?\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe module is manufactured in the United States.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eCan field wiring terminals be disconnected while power is applied?\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eHot-swapping AC field wiring carries electrical hazards and must be performed only after complete power isolation to prevent arc flash or equipment damage.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eWhat is the standard operating temperature boundary for this hardware?\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe unit operates reliably within an ambient temperature range of 0 deg C to 55 deg C.\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":46066453872813,"sku":"1791-16A0","price":88.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0733\/1613\/9181\/files\/1791-16A0_13.jpg?v=1785426222","url":"https:\/\/www.maxwellplc.com\/ga\/products\/1791-16a0-a-allen-bradley-block-i-o-input-module-series-1791","provider":"Maxwell PLC Ltd","version":"1.0","type":"link"}