{"product_id":"allen-bradley-1791-16ac-block-i-o-module","title":"Allen-Bradley 1791-16AC Block I\/O Module","description":"\u003ch2\u003eAllen-Bradley 1791-16AC Block I\/O Module\u003c\/h2\u003e\n\u003cp\u003eConfigured for remote I\/O signal acquisition and actuator output control in Allen-Bradley 1791 Block I\/O systems, the \u003cstrong\u003eAllen-Bradley 1791-16AC\u003c\/strong\u003e (\u003cstrong\u003e1791-16AC\u003c\/strong\u003e Block I\/O Module) provides direct physical\/electrical execution through 16 AC input channels and 16 AC output channels.\u003c\/p\u003e\n\u003ch3\u003eHardware Specifications\u003c\/h3\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eSpecification\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\u003e1791-16AC\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\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eBlock I\/O Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Line\u003c\/td\u003e\n\u003ctd\u003e1791 Block I\/O\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eUSA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e1.80 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e31.3 W maximum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNumber of Inputs\u003c\/td\u003e\n\u003ctd\u003e16 AC inputs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNumber of Outputs\u003c\/td\u003e\n\u003ctd\u003e16 AC outputs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNumber of Points\u003c\/td\u003e\n\u003ctd\u003e32 points\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Voltage\u003c\/td\u003e\n\u003ctd\u003e120 VAC nominal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Voltage Range\u003c\/td\u003e\n\u003ctd\u003e79-132 VAC, 47-63 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Voltage Range\u003c\/td\u003e\n\u003ctd\u003e20-132 VAC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eExternal Power Supply\u003c\/td\u003e\n\u003ctd\u003e85-132 VAC, 47-63 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eExternal Power Current\u003c\/td\u003e\n\u003ctd\u003e150 mA at 132 VAC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Groups\u003c\/td\u003e\n\u003ctd\u003e2 groups of 8 inputs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNominal Input Current\u003c\/td\u003e\n\u003ctd\u003e11 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput On-state Current\u003c\/td\u003e\n\u003ctd\u003e12.3 mA maximum at 132 VAC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Off-state Voltage\u003c\/td\u003e\n\u003ctd\u003e35 VAC maximum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Off-state Current\u003c\/td\u003e\n\u003ctd\u003e2.3 mA minimum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting Orientation\u003c\/td\u003e\n\u003ctd\u003eVertical or horizontal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThermal Dissipation\u003c\/td\u003e\n\u003ctd\u003e106.73 BTU\/Hr maximum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCurrent Rating\u003c\/td\u003e\n\u003ctd\u003e150\/300 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eEtherNet\/IP and PLC Backplane I\/O Architecture\u003c\/h3\u003e\n\u003cp\u003eThe 1791-16AC Block I\/O Module is designed for distributed machine control architectures requiring localized AC signal termination. The module integrates input conditioning, output switching circuitry, PLC interface electronics, and external power handling within a single block-style enclosure.\u003c\/p\u003e\n\u003cp\u003eThe I\/O density configuration provides 16 input points and 16 output points for connection of AC field devices. Signal processing circuitry performs input state recognition and output command execution between field wiring and the connected Allen-Bradley controller network.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: Does the 1791-16AC support hot-swapping during controller operation?\u003cbr\u003eA: The available documentation does not specify hot-swap capability. Installation and replacement should be performed according to the applicable controller system power isolation procedures.\u003c\/p\u003e\n\u003cp\u003eQ: What is the external power requirement for output operation?\u003cbr\u003eA: The module requires an external supply of 85-132 VAC at 47-63 Hz, with a specified external current rating of 150 mA at 132 VAC.\u003c\/p\u003e\n\u003cp\u003eQ: How are the input channels organized internally?\u003cbr\u003eA: The 16 input channels are arranged as two groups of eight inputs for AC signal connection and field wiring organization.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cp\u003eInstall the 1791-16AC module on a suitable industrial mounting surface using the specified vertical or horizontal mounting orientation.\u003c\/p\u003e\n\u003cp\u003eTerminate AC field wiring according to the applicable electrical installation standards. Separate AC power conductors from low-level communication or instrumentation wiring to reduce electrical interference.\u003c\/p\u003e\n\u003cp\u003eConnect protective grounding and enclosure bonding according to the control panel grounding design. Maintain proper cable routing practices, including separation of high-voltage switching conductors from sensitive signal circuits.\u003c\/p\u003e\n\u003cp\u003eVerify input voltage levels, output load requirements, and external power wiring before energizing the module. Confirm that connected field devices match the specified AC voltage operating ranges.\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":43762896207962,"sku":"1791-16AC","price":123.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0612\/4601\/3530\/files\/1791-16AC2.jpg?v=1785395166","url":"https:\/\/www.plcmasters.com\/products\/allen-bradley-1791-16ac-block-i-o-module","provider":"PLC Masters Ltd.","version":"1.0","type":"link"}