{"product_id":"1794-oa8-allen-bradley-flex-i-o-digital-output-module","title":"1794-OA8 Allen-Bradley FLEX I\/O Digital Output Module","description":"\u003ch2\u003eAllen-Bradley 1794-OA8 FLEX I\/O Digital Output Module\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eAllen-Bradley 1794-OA8\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003e1794-OA8\u003c\/strong\u003e Digital Output Module, operates as a dedicated hardware component for AC digital signal switching within the Allen-Bradley FLEX I\/O 1794 system.\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-OA8\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\u003eUSA\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\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e4.1 W maximum at 0.5 A load\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eFLEX I\/O Digital Output Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Line\u003c\/td\u003e\n\u003ctd\u003eFLEX I\/O 1794\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Channels\u003c\/td\u003e\n\u003ctd\u003e8 nonisolated outputs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Voltage\u003c\/td\u003e\n\u003ctd\u003e120 VAC nominal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Current Rating\u003c\/td\u003e\n\u003ctd\u003e4.0 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOn-state Current\u003c\/td\u003e\n\u003ctd\u003e5 mA minimum per output\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOn-state Voltage Drop\u003c\/td\u003e\n\u003ctd\u003e1.0 V maximum at 0.5 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOff-state Leakage Current\u003c\/td\u003e\n\u003ctd\u003e2.25 mA maximum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIsolation Voltage\u003c\/td\u003e\n\u003ctd\u003e120 V continuous\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlexBus Current\u003c\/td\u003e\n\u003ctd\u003e80 mA at 5 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThermal Dissipation\u003c\/td\u003e\n\u003ctd\u003e14.0 BTU\/hr at 0.5 A load\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTerminal Base Compatibility\u003c\/td\u003e\n\u003ctd\u003eTBNF\/TB2\/TB3\/TB3S\/TBN screw connection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtection Rating\u003c\/td\u003e\n\u003ctd\u003eIP20\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 Integration\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003e1794-OA8\u003c\/strong\u003e module interfaces with the FLEX I\/O 1794 platform through the FlexBus backplane connection. The module requires 80 mA at 5 VDC FlexBus current and provides eight AC digital output points for field device control. The nonisolated output architecture requires external consideration of field wiring separation and common reference arrangements during panel design. The module supports installation in non-hazardous locations and Class I, Division 2, Groups A, B, C, and D hazardous locations according to applicable North American hazardous location approvals.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Are the 1794-OA8 output channels electrically isolated from each other?\u003c\/strong\u003e\u003cbr\u003eA: No. The eight output channels are nonisolated and share the module output reference structure. Field wiring design must account for the nonisolated configuration.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What terminal bases are compatible with the 1794-OA8 module?\u003c\/strong\u003e\u003cbr\u003eA: The module is designed for use with TBNF, TB2, TB3, TB3S, and TBN terminal bases with screw connection interfaces.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What is the FlexBus current requirement of the module?\u003c\/strong\u003e\u003cbr\u003eA: The module requires 80 mA at 5 VDC from the FLEX I\/O backplane.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cp\u003eInstall the 1794-OA8 module on the specified FLEX I\/O terminal base and verify mechanical engagement before applying field power. Maintain separation between AC field wiring and low-level signal wiring to reduce electrical interference.\u003c\/p\u003e\n\u003cp\u003eConnect protective grounding and panel bonding according to the enclosure design and applicable industrial installation practices. Use appropriate wire routing methods to prevent accidental contact between adjacent output circuits. Verify AC supply voltage, load current requirements, and output device compatibility before commissioning.\u003c\/p\u003e\n\u003cp\u003eConfirm that the terminal base connections are correctly seated and inspect the module status indicators after power application. Firmware and configuration compatibility should be checked when integrating the module into an existing FLEX I\/O system.\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":43778470117466,"sku":"1794-OA8","price":123.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0612\/4601\/3530\/files\/1794-OA82.jpg?v=1785745342","url":"https:\/\/www.plcmasters.com\/products\/1794-oa8-allen-bradley-flex-i-o-digital-output-module","provider":"PLC Masters Ltd.","version":"1.0","type":"link"}