{"product_id":"allen-bradley-1794-ob16-a-flex-i-o-sourcing-digital-output-module","title":"Allen-Bradley 1794-OB16\/A FLEX I\/O Sourcing Digital Output Module","description":"\u003ch2\u003eAllen-Bradley 1794-OB16\/A FLEX I\/O Sourcing Digital Output Module\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eAllen-Bradley 1794-OB16\/A\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003e1794-OB16\u003c\/strong\u003e Sourcing Digital Output Module, operates as a dedicated hardware component for converting controller commands into 24 VDC transistor-based sourcing outputs within the FLEX I\/O 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-OB16\/A\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\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e4.2 W maximum at 31.2 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModule Type\u003c\/td\u003e\n\u003ctd\u003eSourcing 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\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNumber of Outputs\u003c\/td\u003e\n\u003ctd\u003e16 non-isolated sourcing outputs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Type\u003c\/td\u003e\n\u003ctd\u003eTransistor-based sourcing (PNP)\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 VDC to 31.2 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Current Rating\u003c\/td\u003e\n\u003ctd\u003e0.5 A per channel, 8.0 A maximum per module\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 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\u003e1.0 mA maximum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSurge Current\u003c\/td\u003e\n\u003ctd\u003e2.0 A for 10 ms, repeatable every 2 s\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\u003e14.3 BTU\/hr maximum at 31.2 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIsolation Voltage\u003c\/td\u003e\n\u003ctd\u003e50 V continuous, basic insulation type, tested at 850 VDC for 60 s\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-TB3T, 1794-TB3TS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eFLEX I\/O Backplane Communication and I\/O Density Scaling\u003c\/h3\u003e\n\u003cp\u003eThe 1794-OB16\/A exchanges output data through the FLEX I\/O backplane interface and provides 16 discrete sourcing channels within a compact modular I\/O structure. The module supports I\/O density scaling by allowing multiple output channels to be integrated within the FLEX I\/O terminal base architecture. Controller commands are transferred through the adapter and backplane communication path for field output execution.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: What type of field devices can be connected to the 1794-OB16\/A outputs?\u003cbr\u003eA: The module provides 24 VDC sourcing transistor outputs intended for field devices such as solenoids, relays, indicators, and starters within the specified current limits.\u003c\/p\u003e\n\u003cp\u003eQ: What terminal bases are compatible with the 1794-OB16\/A module?\u003cbr\u003eA: The module is compatible with FLEX I\/O terminal bases including 1794-TB2, 1794-TB3, 1794-TB3S, 1794-TBN, 1794-TB3T, and 1794-TB3TS.\u003c\/p\u003e\n\u003cp\u003eQ: Does the module provide isolated output channels?\u003cbr\u003eA: The 1794-OB16\/A provides 16 non-isolated sourcing outputs with a specified isolation voltage rating of 50 V continuous.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cp\u003eInstall the 1794-OB16\/A module on a compatible FLEX I\/O terminal base and verify terminal base wiring before applying field power. Use wiring practices suitable for 24 VDC discrete output circuits and separate output wiring from high-noise power conductors where required.\u003c\/p\u003e\n\u003cp\u003eConnect field device wiring according to the sourcing output configuration and confirm load polarity before energizing the circuit. Maintain proper cabinet grounding and apply shield termination practices for adjacent signal wiring when required by the installation environment.\u003c\/p\u003e\n\u003cp\u003eVerify the controller adapter configuration, module addressing, and output mapping before placing connected field devices into service. Confirm that connected loads remain within the specified per-channel and total module current ratings.\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":43778481651802,"sku":"1794-OB16\/A","price":123.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0612\/4601\/3530\/files\/1794-OA161.jpg?v=1785745756","url":"https:\/\/www.plcmasters.com\/products\/allen-bradley-1794-ob16-a-flex-i-o-sourcing-digital-output-module","provider":"PLC Masters Ltd.","version":"1.0","type":"link"}