{"product_id":"allen-bradley-1791-n4c2-block-i-o-analog-input-output-module","title":"Allen-Bradley 1791-N4C2 Block I\/O Analog Input\/Output Module","description":"\u003ch2\u003eAllen-Bradley 1791-N4C2 Block I\/O Analog Input\/Output Module\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eAllen-Bradley 1791-N4C2\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003e1791-N4C2\u003c\/strong\u003e Block I\/O Analog Module, operates as a dedicated hardware component for analog signal acquisition and output regulation within 1791 Block I\/O control platforms. The module provides four selectable analog inputs and two analog outputs.\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-N4C2\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\u003e1.19 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e16.9 W maximum\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\u003eModule Type\u003c\/td\u003e\n\u003ctd\u003eAnalog Input\/Output Combination Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNumber of Channels\u003c\/td\u003e\n\u003ctd\u003e6\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Channels\u003c\/td\u003e\n\u003ctd\u003e4 analog inputs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Channels\u003c\/td\u003e\n\u003ctd\u003e2 analog outputs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Type\u003c\/td\u003e\n\u003ctd\u003eSelectable analog current\/voltage inputs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Type\u003c\/td\u003e\n\u003ctd\u003eAnalog current\/voltage outputs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Impedance\u003c\/td\u003e\n\u003ctd\u003eLess than 1 ohm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUpdate Rate per Channel\u003c\/td\u003e\n\u003ctd\u003e10 ms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupply Voltage\u003c\/td\u003e\n\u003ctd\u003e120 VAC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Supply Type\u003c\/td\u003e\n\u003ctd\u003eAC supply power\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eProfinet and EtherNet\/IP Deterministic Network Integration\u003c\/h3\u003e\n\u003cp\u003eThe 1791-N4C2 applies Allen-Bradley industrial control architecture principles for analog I\/O density scaling within Block I\/O systems. The module combines four analog input channels and two analog output channels in a single field I\/O block, reducing the number of separate signal interface components.\u003c\/p\u003e\n\u003cp\u003eSystem integration requires verification of controller compatibility, I\/O configuration parameters, and firmware flash compatibility between connected Allen-Bradley control hardware. Analog signal performance depends on correct channel configuration, field wiring practices, and grounding methods.\u003c\/p\u003e\n\u003cp\u003eThe module processes analog current and voltage signals through selectable input channels and provides analog output channels with low output impedance characteristics for connected control devices.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: How many analog channels are available on the 1791-N4C2?\u003cbr\u003eA: The module provides six analog channels consisting of four analog input channels and two analog output channels.\u003c\/p\u003e\n\u003cp\u003eQ: What type of analog signals can the module handle?\u003cbr\u003eA: The module supports selectable analog current and voltage inputs and analog current and voltage outputs.\u003c\/p\u003e\n\u003cp\u003eQ: What is the specified channel update rate?\u003cbr\u003eA: Each channel has an update rate of 10 ms according to the available technical specifications.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cp\u003eInstall the 1791-N4C2 according to the mechanical requirements of the Block I\/O installation environment. Verify the 120 VAC supply connection and confirm wiring polarity and terminal assignments before energizing the module.\u003c\/p\u003e\n\u003cp\u003eAnalog signal wiring should be routed separately from high-voltage power conductors and electromagnetic interference sources. Use appropriate shielding and grounding methods according to the control system design requirements.\u003c\/p\u003e\n\u003cp\u003eBefore commissioning, verify each analog input channel scaling, output signal response, and controller I\/O configuration. Confirm that field devices produce expected signal values before placing the module into normal operation.\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":43763114606682,"sku":"1791-N4C2","price":123.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0612\/4601\/3530\/files\/1791-N4C22.jpg?v=1785397665","url":"https:\/\/www.plcmasters.com\/products\/allen-bradley-1791-n4c2-block-i-o-analog-input-output-module","provider":"PLC Masters Ltd.","version":"1.0","type":"link"}