{"product_id":"allen-bradley-1794-ie8-flex-i-o-analog-input-module","title":"Allen-Bradley 1794-IE8 Flex I\/O Analog Input Module","description":"\u003ch2\u003eAllen-Bradley 1794-IE8 Flex I\/O Analog Input Module\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eAllen-Bradley 1794-IE8\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003e1794-IE8\u003c\/strong\u003e Analog Input Module, operates as a dedicated hardware component for analog signal acquisition within the Allen-Bradley Flex I\/O 1794 system. It provides eight single-ended non-isolated input channels with selectable unipolar and bipolar resolution processing.\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\u003e1794-IE8\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\u003e0.24 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e5.4 cm x 9.4 cm x 4.57 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e0 to 55 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e3 W maximum at 31.2 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eAnalog Input Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Series\u003c\/td\u003e\n\u003ctd\u003eFlex I\/O 1794\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNumber of Inputs\u003c\/td\u003e\n\u003ctd\u003e8 single-ended, non-isolated inputs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResolution\u003c\/td\u003e\n\u003ctd\u003e12 bits unipolar; 11 bits plus sign bipolar\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConversion Type\u003c\/td\u003e\n\u003ctd\u003eSuccessive approximation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConversion Rate\u003c\/td\u003e\n\u003ctd\u003e256 us all channels\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupply Voltage\u003c\/td\u003e\n\u003ctd\u003e24 VDC nominal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupply Voltage Range\u003c\/td\u003e\n\u003ctd\u003e19.2 to 31.2 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupply Current\u003c\/td\u003e\n\u003ctd\u003e60 mA at 24 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlexbus Current\u003c\/td\u003e\n\u003ctd\u003e20 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eData Format\u003c\/td\u003e\n\u003ctd\u003eLeft justified, 16 bit 2's complement\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIsolation Voltage\u003c\/td\u003e\n\u003ctd\u003e850 VDC tested for 1 s between user power and system\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChannel Isolation\u003c\/td\u003e\n\u003ctd\u003eNo isolation between individual channels\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Overload\u003c\/td\u003e\n\u003ctd\u003e30 V continuous or 32 mA continuous, one channel at a time\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eProfinet \/ EtherNet-IP Industrial Control Compatibility\u003c\/h3\u003e\n\u003cp\u003eThe 1794-IE8 is part of the Flex I\/O 1794 modular I\/O architecture and exchanges processed analog data through the installed terminal base and adapter communication path. The module architecture supports I\/O density scaling by adding multiple signal acquisition modules within the Flex I\/O platform while maintaining a compact remote I\/O installation format. Configuration depends on the selected Flex I\/O adapter, controller platform, and system firmware compatibility.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: Does the 1794-IE8 provide channel-to-channel electrical isolation?\u003cbr\u003eA: No. The module provides isolation between user power and system circuits tested at 850 VDC for 1 s, but individual input channels are not isolated from each other.\u003c\/p\u003e\n\u003cp\u003eQ: What terminal base units are compatible with the 1794-IE8 module?\u003cbr\u003eA: The module is installed on 1794-TB2, 1794-TB3, 1794-TB3S, 1794-TB3T, and 1794-TB3TS terminal base units.\u003c\/p\u003e\n\u003cp\u003eQ: What analog conversion method is used by the module?\u003cbr\u003eA: The 1794-IE8 uses successive approximation conversion with a 256 us conversion rate across all channels.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cp\u003eInstall the 1794-IE8 module on the specified Flex I\/O terminal base unit with the module securely seated into the terminal connection interface. Verify that field wiring matches the configured analog input signal type and polarity requirements before energizing the system.\u003c\/p\u003e\n\u003cp\u003eMaintain separation between analog signal wiring and high-voltage or high-current conductors to reduce electrical interference. Connect cable shields according to the control system grounding practice, avoiding unintended ground loops. Confirm the 24 VDC supply polarity and verify that the module power indicator operates correctly after installation.\u003c\/p\u003e\n\u003cp\u003eFor systems containing multiple analog modules, check backplane loading, adapter capacity, and controller configuration before adding additional I\/O nodes.\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":43768322654298,"sku":"1794-IE8","price":123.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0612\/4601\/3530\/files\/1794-IE82.jpg?v=1785484421","url":"https:\/\/www.plcmasters.com\/products\/allen-bradley-1794-ie8-flex-i-o-analog-input-module","provider":"PLC Masters Ltd.","version":"1.0","type":"link"}