{"product_id":"allen-bradley-1794-ib8-flex-i-o-digital-input-module","title":"Allen-Bradley 1794-IB8 Flex I\/O Digital Input Module","description":"\u003ch2\u003eAllen-Bradley 1794-IB8 Flex I\/O Digital Input Module\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eAllen-Bradley 1794-IB8\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003e1794-IB8\u003c\/strong\u003e Flex I\/O Digital Input Module, operates as a dedicated hardware component for 24 VDC sinking signal acquisition within the Flex I\/O 1794 series network architecture.\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-IB8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eAllen-Bradley \/ Rockwell Automation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eFlex I\/O Digital Input Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSeries\u003c\/td\u003e\n\u003ctd\u003eFlex I\/O 1794\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\u003e0.15 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e3.5 W @ 31.2 VDC max\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Channels\u003c\/td\u003e\n\u003ctd\u003e8 current sinking inputs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Voltage Range\u003c\/td\u003e\n\u003ctd\u003e10 VDC minimum to 31.2 VDC maximum on-state voltage\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOn-State Current\u003c\/td\u003e\n\u003ctd\u003e2.0 mA minimum to 12.0 mA maximum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOff-State Voltage\u003c\/td\u003e\n\u003ctd\u003e5 VDC maximum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOff-State Current\u003c\/td\u003e\n\u003ctd\u003e1.5 mA maximum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNominal Input Impedance\u003c\/td\u003e\n\u003ctd\u003e4.6 kOhm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlexBus Current\u003c\/td\u003e\n\u003ctd\u003e20 mA @ 5 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting Type\u003c\/td\u003e\n\u003ctd\u003eDIN rail mount, open style\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEnclosure Rating\u003c\/td\u003e\n\u003ctd\u003eIP20\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupported Networks\u003c\/td\u003e\n\u003ctd\u003eEtherNet\/IP, ControlNet, DeviceNet\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eEtherNet\/IP and Flex I\/O Backplane Communication Characteristics\u003c\/h3\u003e\n\u003cp\u003eThe 1794-IB8 operates as a discrete input module within the Flex I\/O 1794 platform and transfers field input states through the FlexBus communication interface. The module uses a 20 mA @ 5 VDC FlexBus current load and provides eight-channel digital input density for distributed I\/O architectures. Network integration supports EtherNet\/IP, ControlNet, and DeviceNet communication environments through compatible Flex I\/O adapter modules.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: What type of input signals does the 1794-IB8 process?\u003cbr\u003eA: The module processes 24 VDC discrete signals using eight current sinking input channels. The input circuit accepts on-state voltages from 10 VDC to 31.2 VDC.\u003c\/p\u003e\n\u003cp\u003eQ: What is the FlexBus current requirement of the 1794-IB8?\u003cbr\u003eA: The module requires 20 mA at 5 VDC from the FlexBus interface.\u003c\/p\u003e\n\u003cp\u003eQ: Can the 1794-IB8 be installed as a standalone network device?\u003cbr\u003eA: No. The module is installed as part of a Flex I\/O 1794 assembly and requires a compatible adapter module for communication with EtherNet\/IP, ControlNet, or DeviceNet networks.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cp\u003eInstall the 1794-IB8 module on a compatible DIN rail mounting system with appropriate spacing for field wiring access and heat dissipation. Verify that the FlexBus connection is correctly seated before applying power.\u003c\/p\u003e\n\u003cp\u003eUse field wiring practices suitable for 24 VDC discrete signal circuits. Separate input wiring from high-voltage power conductors and high-noise sources to reduce electrical interference. Maintain proper grounding and shielding methods according to the installation requirements of the connected control system.\u003c\/p\u003e\n\u003cp\u003eConfirm input polarity and current sinking device compatibility before connecting field devices. Verify module status indicators and controller I\/O configuration after installation.\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":43768314495066,"sku":"1794-IB8","price":123.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0612\/4601\/3530\/files\/1794-IB82.jpg?v=1785483380","url":"https:\/\/www.plcmasters.com\/products\/allen-bradley-1794-ib8-flex-i-o-digital-input-module","provider":"PLC Masters Ltd.","version":"1.0","type":"link"}