{"product_id":"1794-ob8-allen-bradley-digital-dc-output-module-flex-i-o","title":"1794-OB8 Allen-Bradley Digital DC Output Module FLEX I\/O","description":"\u003cp\u003eThe \u003cstrong\u003eAllen-Bradley 1794-OB8\u003c\/strong\u003e serves as the primary \u003cstrong\u003e1794-OB8\u003c\/strong\u003e Digital DC Output Module utilized to execute discrete current sourcing operations across FLEX I\/O platforms.\u003c\/p\u003e\n\u003ch3\u003eHardware Identification Key\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e1794\u003c\/strong\u003e: Identifies the distributed, modular industrial remote I\/O terminal infrastructure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOB\u003c\/strong\u003e: Specifies direct current (DC) solid-state sourcing electronic switch logic.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e8\u003c\/strong\u003e: Confirms the physical hardware density providing exactly 8 output channels.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eStructural Parameters\u003c\/h3\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eParameter\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\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\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\u003e0.7 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShipping Dimensions\u003c\/td\u003e\n\u003ctd\u003e9.5 x 4.4 x 5.7 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\u003e3.3 W @ 31.2 VDC maximum power dissipation rating\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOn-state Voltage nom.\u003c\/td\u003e\n\u003ctd\u003e24 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Current Rating\u003c\/td\u003e\n\u003ctd\u003e4 A aggregate total module capacity\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOn-state Current max.\u003c\/td\u003e\n\u003ctd\u003e500 mA maximum per individual channel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOn-state Voltage Drop max.\u003c\/td\u003e\n\u003ctd\u003e0.5 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOff-state Leakage Current max.\u003c\/td\u003e\n\u003ctd\u003e0.5 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIsolation Voltage\u003c\/td\u003e\n\u003ctd\u003e50 V continuous insulation barrier rating\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlexbus Current\u003c\/td\u003e\n\u003ctd\u003e60 mA @ 5 V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTariff Code\u003c\/td\u003e\n\u003ctd\u003e8537101190\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eDeterministic Sync \u0026amp; Backplane Flash Compatibility\u003c\/h3\u003e\n\u003cp\u003eThe processing interface anchors loop operations to the hardware backplane bus communication velocity indexes. When scaling configurations via Profinet or EtherNet\/IP deterministic networks, the module guarantees jitter-free execution states across all 8 nodes, remaining fully transparent under remote firmware flash compatibility updates and I\/O density scaling routines.\u003c\/p\u003e\n\u003ch3\u003ePackaging List\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1 x 1794-OB8 Flex 8 Point Digital DC Output Module\u003c\/li\u003e\n\u003cli\u003e1 x Device Installation Instructions Manual\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eAssembly \u0026amp; Shielding Infrastructure\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eModule Placement\u003c\/strong\u003e\n\u003cul\u003e\n\u003cli\u003eRotate the mechanical orientation key switch on the specific terminal base to position 2 before mounting.\u003c\/li\u003e\n\u003cli\u003eAlign the module housing tracks over the base and snap downward into the retaining lock mechanisms.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConductor Layout\u003c\/strong\u003e\n\u003cul\u003e\n\u003cli\u003eIsolate all 24 VDC output sourcing conductors from high-voltage AC lines and communication drop lines.\u003c\/li\u003e\n\u003cli\u003eImplement single-point grounding methods for the common DIN-rail subsystem frame to suppress stray field noise.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eHardware Infrastructure FAQ\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eWhat is the maximum electrical current allowed through an individual sourcing channel?\u003c\/p\u003e\n\u003cp\u003eEach output switch allows for a maximum continuous current load of 500 mA under full voltage conditions.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eDoes this specific digital output block support physical hot-swapping procedures under load?\u003c\/p\u003e\n\u003cp\u003eRemoval and insertion under power (RIUP) actions are permitted provided the surrounding atmosphere is non-hazardous.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWhat is the exact current demand placed on the internal 5 VDC logic backplane?\u003c\/p\u003e\n\u003cp\u003eThe internal processing microcircuit elements draw a maximum current load of 60 mA from the Flexbus rail.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWhat happens to the 8 output switches if the local backplane communication fails?\u003c\/p\u003e\n\u003cp\u003eThe solid-state outputs automatically drop down to default unenergized off positions to ensure system predictability.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWhat is the maximum voltage loss across an active current sourcing channel switch?\u003c\/p\u003e\n\u003cp\u003eThe internal semiconductor junction exhibits a maximum on-state voltage drop parameter of 0.5 VDC.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWhat continuous isolation barrier exists between the field loop and the logic rail?\u003c\/p\u003e\n\u003cp\u003eThe module architecture provides a continuous 50 V factory-tested optocoupler galvanic isolation barrier between circuits.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWhat is the maximum thermal dissipation output under worst-case voltage conditions?\u003c\/p\u003e\n\u003cp\u003eThe module releases up to 11.2 BTU\/hr. of thermal energy when operating at a maximum limit of 31.2 VDC.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eCan these output channels be configured to drive inductive industrial solenoids directly?\u003c\/p\u003e\n\u003cp\u003eYes, current sourcing channels drive inductive elements, though external surge suppression is standard engineering practice.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":46066458198189,"sku":"1794-OB8","price":88.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0733\/1613\/9181\/files\/1794-OB8_13.jpg?v=1784210520","url":"https:\/\/www.maxwellplc.com\/ga\/products\/1794-ob8-allen-bradley-digital-dc-output-module-flex-i-o","provider":"Maxwell PLC Ltd","version":"1.0","type":"link"}