{"product_id":"allen-bradley-1794-ob8-flex-i-o-digital-output-module","title":"Allen-Bradley 1794-OB8 FLEX I\/O Digital Output Module","description":"\u003ch2\u003eAllen-Bradley 1794-OB8 FLEX I\/O Digital Output Module\u003c\/h2\u003e\n\u003cp\u003eConfigured for discrete actuator signal execution in FLEX I\/O control systems, the \u003cstrong\u003eAllen-Bradley 1794-OB8\u003c\/strong\u003e (\u003cstrong\u003e1794-OB8\u003c\/strong\u003e Digital Output Module) provides direct physical\/electrical execution through 8 sourcing output channels for 24 VDC field devices.\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-OB8\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\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.18 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e0 deg C to +55 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e3.3 W maximum at 31.2 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Line\u003c\/td\u003e\n\u003ctd\u003eFLEX I\/O\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModule Type\u003c\/td\u003e\n\u003ctd\u003eDigital Output Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Configuration\u003c\/td\u003e\n\u003ctd\u003e8 sourcing, non-isolated outputs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNominal Operating Voltage\u003c\/td\u003e\n\u003ctd\u003e24 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Voltage Range\u003c\/td\u003e\n\u003ctd\u003e10 VDC to 31.2 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Current Capacity\u003c\/td\u003e\n\u003ctd\u003e0.5 A maximum per channel, 4.0 A total module maximum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOn-State Voltage Drop\u003c\/td\u003e\n\u003ctd\u003e0.5 VDC maximum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOff-State Leakage Current\u003c\/td\u003e\n\u003ctd\u003e0.5 mA maximum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSurge Current\u003c\/td\u003e\n\u003ctd\u003e2 A for 10 ms, repeatable every 2 seconds\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlexBus Current\u003c\/td\u003e\n\u003ctd\u003e30 mA at 5 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIsolation Voltage\u003c\/td\u003e\n\u003ctd\u003eTested at 850 VDC for 1 s between user power and FlexBus\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible Terminal Bases\u003c\/td\u003e\n\u003ctd\u003e1794-TB2, 1794-TB3, 1794-TB3S, 1794-TBN, 1794-TBNF\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStatus Indicators\u003c\/td\u003e\n\u003ctd\u003e8 yellow output status LEDs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting Type\u003c\/td\u003e\n\u003ctd\u003eDIN rail mounting\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 Industrial Control Integration\u003c\/h3\u003e\n\u003cp\u003eThe 1794-OB8 module operates as a FLEX I\/O discrete output component within Allen-Bradley industrial control architectures. The module exchanges output data through the FLEX I\/O backplane interface and supports deterministic I\/O update behavior when installed with compatible communication adapters.\u003c\/p\u003e\n\u003cp\u003eThe output channels provide sourcing current paths for external loads including relays, solenoid valves, indicator lamps, and actuator interface circuits. The module uses LED channel indicators for local verification of commanded output states.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: Can the 1794-OB8 module be replaced without disconnecting field wiring?\u003cbr\u003eA: The module plugs into compatible FLEX I\/O terminal base units, allowing module replacement while field wiring remains connected to the terminal base.\u003c\/p\u003e\n\u003cp\u003eQ: What type of output signals does the 1794-OB8 provide?\u003cbr\u003eA: The module provides 8 non-isolated sourcing digital outputs for 24 VDC field device control.\u003c\/p\u003e\n\u003cp\u003eQ: What hardware interface is required for installation?\u003cbr\u003eA: The module requires a compatible FLEX I\/O terminal base unit, including 1794-TB2, 1794-TB3, 1794-TB3S, 1794-TBN, or 1794-TBNF models.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cp\u003eInstall the 1794-OB8 module on a compatible FLEX I\/O terminal base unit mounted on a DIN rail system. Verify terminal base compatibility before installation and ensure field wiring is secured according to the terminal base wiring requirements.\u003c\/p\u003e\n\u003cp\u003eSeparate output wiring from high-voltage power conductors and high-noise sources where possible. Use appropriate cable routing practices for discrete actuator circuits and maintain proper grounding and shielding methods for the overall control cabinet installation.\u003c\/p\u003e\n\u003cp\u003eBefore energizing the module, verify the 24 VDC supply polarity, field device current requirements, and output load compatibility with the module channel ratings. Confirm LED status indication after commissioning to validate output channel operation.\u003c\/p\u003e\n\u003ch3\u003eSEO Suite\u003c\/h3\u003e\n\u003cp\u003eSEO Title: 1794-OB8 Allen-Bradley FLEX I\/O Digital Output Module | New \u0026amp; Original Stock\u003c\/p\u003e\n\u003cp\u003eMeta Description: 1794-OB8 Allen-Bradley Digital Output Module. Brand New, Original Stock, Global Shipping available for FLEX I\/O systems.\u003c\/p\u003e\n\u003cp\u003eProduct Type: Digital Output Modules\u003c\/p\u003e\n\u003cp\u003eTags: Digital Output Modules, Allen-Bradley FLEX I\/O\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":43778840756314,"sku":"1794-OB8","price":123.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0612\/4601\/3530\/files\/1794-OB82.jpg?v=1785748391","url":"https:\/\/www.plcmasters.com\/products\/allen-bradley-1794-ob8-flex-i-o-digital-output-module","provider":"PLC Masters Ltd.","version":"1.0","type":"link"}