{"product_id":"allen-bradley-1791-16a0-block-i-o-input-module","title":"Allen-Bradley 1791-16A0 Block I\/O Input Module","description":"\u003ch2\u003eAllen-Bradley 1791-16A0 Block I\/O Input Module\u003c\/h2\u003e\n\u003cp\u003eConfigured for AC field signal acquisition in Allen-Bradley 1791 Block I\/O systems, the \u003cstrong\u003eAllen-Bradley 1791-16A0\u003c\/strong\u003e (\u003cstrong\u003e1791-16A0\u003c\/strong\u003e Block I\/O Input Module) provides direct electrical input processing through 16 AC input channels arranged in two groups.\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\u003e1791-16A0\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 Input 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\u003e1.20 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e0 deg C to 60 deg C maximum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003eNot specified in available documentation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNumber of Inputs\u003c\/td\u003e\n\u003ctd\u003e16 inputs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNumber of Outputs\u003c\/td\u003e\n\u003ctd\u003e0 outputs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Groups\u003c\/td\u003e\n\u003ctd\u003e2 groups of 8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNominal Input Voltage\u003c\/td\u003e\n\u003ctd\u003e120 VAC\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\u003eExternal Power Voltage\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\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput On-state Current\u003c\/td\u003e\n\u003ctd\u003e5 mA minimum at 79 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\u003eMaximum Surge Current\u003c\/td\u003e\n\u003ctd\u003e10 A for 50 ms, repeatable every 2 s\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible Field Devices\u003c\/td\u003e\n\u003ctd\u003eProximity switches, limit switches, selector switches, float switches, pushbutton switches\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Output Rating\u003c\/td\u003e\n\u003ctd\u003e600 mA at 30 deg C; 300 mA at 60 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eFirmware and Industrial Control Compatibility\u003c\/h3\u003e\n\u003cp\u003eThe 1791-16A0 operates as a distributed AC input acquisition module within Allen-Bradley PLC control architectures. The module provides localized signal conditioning for 16 discrete AC field inputs and transfers processed input states through the connected industrial control network.\u003c\/p\u003e\n\u003cp\u003eThe 1791 Block I\/O platform supports I\/O density scaling through modular field connection design. System integration requires compatibility between the selected PLC communication interface, controller firmware revision, and installed Block I\/O configuration.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: Does the 1791-16A0 provide output channels?\u003cbr\u003eA: No. The module is configured with 16 AC input channels and does not provide output channels.\u003c\/p\u003e\n\u003cp\u003eQ: Can the 1791-16A0 be installed in different orientations?\u003cbr\u003eA: Yes. The module supports both vertical and horizontal mounting orientations.\u003c\/p\u003e\n\u003cp\u003eQ: What type of field devices can connect to the input channels?\u003cbr\u003eA: The module supports discrete AC field devices including proximity switches, limit switches, selector switches, float switches, and pushbutton switches.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cp\u003eInstall the module according to the control panel mechanical layout and maintain the specified mounting orientation requirements.\u003c\/p\u003e\n\u003cp\u003eRoute AC input wiring separately from low-level communication and analog signal conductors to reduce electromagnetic interference. Use appropriate terminal identification and conductor labeling during field termination.\u003c\/p\u003e\n\u003cp\u003eConnect protective grounding and panel bonding according to the applicable industrial electrical installation practices. Verify that connected field devices operate within the specified AC input voltage range before applying power.\u003c\/p\u003e\n\u003cp\u003eConfirm external power wiring polarity, voltage level, and frequency requirements before commissioning. Inspect field cable insulation and termination points to prevent incorrect input states caused by wiring faults.\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":43762931171418,"sku":"1791-16A0","price":123.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0612\/4601\/3530\/files\/1791-16A01.jpg?v=1785395681","url":"https:\/\/www.plcmasters.com\/products\/allen-bradley-1791-16a0-block-i-o-input-module","provider":"PLC Masters Ltd.","version":"1.0","type":"link"}