{"product_id":"1794-ob16-allen-bradley-flex-i-o-datasheet-technical-manual","title":"1794-OB16 Allen-Bradley FLEX I\/O Datasheet \u0026 Technical Manual","description":"\u003ch2\u003eAllen-Bradley 1794-OB16 FLEX I\/O Output Module\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eAllen-Bradley 1794-OB16\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003e1794-OB16\u003c\/strong\u003e FLEX I\/O Output Module, operates as a dedicated hardware component for discrete current-sourcing execution within Rockwell Automation control network architectures.\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\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-OB16\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\u003e0.15 lbs (200 g)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003eIndustry standard FLEX I\/O footprint\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\u003e55 mA @ 5 VDC \/ 90 mA @ 24 VDC bus draw\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNumber of Outputs\u003c\/td\u003e\n\u003ctd\u003e16 channels, sourcing configuration\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNominal 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 to 31.2 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Current Rating\u003c\/td\u003e\n\u003ctd\u003e8.0 A per module (16 outputs @ 0.5 A)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax On-State Current\u003c\/td\u003e\n\u003ctd\u003e500 mA per channel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMin On-State Current\u003c\/td\u003e\n\u003ctd\u003e1.0 mA per channel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax On-State Voltage Drop\u003c\/td\u003e\n\u003ctd\u003e0.5 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSurge Current Limit\u003c\/td\u003e\n\u003ctd\u003e2 A for 50 ms, repeatable every 2 seconds\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Off-State Leakage\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 (channel-to-channel and channel-to-system)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEnclosure Rating\u003c\/td\u003e\n\u003ctd\u003eIP20 (open style)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting Options\u003c\/td\u003e\n\u003ctd\u003eDIN-rail or panel mount via terminal base unit\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-TB3K, 1794-TB3SK\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eIndustrial Control \u0026amp; Drive Integration\u003c\/h3\u003e\n\u003cp\u003eThe 1794-OB16 leverages specific backplane bus communication velocity properties inherent to the FLEX I\/O rail system. When interfaced with communication adapters, it executes synchronous I\/O density scaling across Profinet and EtherNet\/IP deterministic networks. Module timing constraints demand consistent firmware flash compatibility across both the active I\/O adapter and the parent controller to ensure deterministic backplane data packet delivery during cyclic execution.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: Can the 1794-OB16 module be hot-swapped (Removal and Insertion Under Power) during operation?\u003c\/p\u003e\n\u003cp\u003eA: Yes, the module supports RIUP capabilities when utilized with standard FLEX I\/O terminal bases. However, field power to the outputs must be isolated prior to removal to prevent inductive arcing or unintended state disruption on the local backplane bus.\u003c\/p\u003e\n\u003cp\u003eQ: What happens if an individual output channel exceeds the 500 mA threshold?\u003c\/p\u003e\n\u003cp\u003eA: Continuous overcurrent beyond 500 mA per channel will cause thermal overload or trigger internal fault protocols depending on the specific series revision (such as the 1794-OB16P derating curve limits), potentially dropping the module output group into an off-state to prevent physical hardware failure.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTerminal Base Attachment\u003c\/strong\u003e: Securely latch the module onto the compatible terminal base unit (e.g., 1794-TB3 or 1794-TB3S) prior to applying backplane power. Ensure the mechanical keyswitch on the base matches the correct module profile position.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWiring Configurations\u003c\/strong\u003e: Connect the external 24 VDC nominal field power supply directly to the specified common and VDC terminals on the base unit. Verify sourcing output leads are routed separately from high-voltage AC cables to minimize electromagnetic interference.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGrounding Requirements\u003c\/strong\u003e: Ensure the DIN-rail or mounting panel is connected to a low-impedance functional earth grounding point. Proper shielding of the field wiring must be maintained to prevent transient noise from corrupting backplane communication.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Allen Bradley","offers":[{"title":"Default Title","offer_id":43420584116314,"sku":"1794-OB16","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0710\/5957\/0778\/files\/172.1_d61c3e7c-f288-4835-b78f-efc16869919a.jpg?v=1779843622","url":"https:\/\/www.spareoil.com\/products\/1794-ob16-allen-bradley-flex-i-o-datasheet-technical-manual","provider":"SpareOil Automation","version":"1.0","type":"link"}