{"product_id":"allen-bradley-1797-ob4d-flex-ex-i-o-output-module","title":"Allen-Bradley 1797-OB4D FLEX Ex I\/O Output Module","description":"\u003ch2\u003eAllen-Bradley 1797-OB4D FLEX Ex I\/O Output Module\u003c\/h2\u003e\n\u003cp\u003eConfigured for discrete field output control in the FLEX Ex I\/O system, the \u003cstrong\u003eAllen-Bradley 1797-OB4D\u003c\/strong\u003e (\u003cstrong\u003e1797-OB4D\u003c\/strong\u003e FLEX Ex I\/O Output Module) provides direct physical electrical execution for four nonisolated sourcing output channels. The module operates from a 9.5 V DC power supply interface and supports load ranges from 30 to 5000 ohms.\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\u003e1797-OB4D\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\u003eUnited States\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.6 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e7.5 W field-side power consumption\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eFLEX Ex I\/O Output Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Line\u003c\/td\u003e\n\u003ctd\u003eFlex I\/O 1797\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Channels\u003c\/td\u003e\n\u003ctd\u003e4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Type\u003c\/td\u003e\n\u003ctd\u003eNonisolated Sourcing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Supply\u003c\/td\u003e\n\u003ctd\u003e9.5 V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLoad Range\u003c\/td\u003e\n\u003ctd\u003e30-5000 ohms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eElectronic Protection\u003c\/td\u003e\n\u003ctd\u003eLead Break, Overload, Short Circuit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Dissipation\u003c\/td\u003e\n\u003ctd\u003e5 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThermal Dissipation\u003c\/td\u003e\n\u003ctd\u003e17.07 BTU\/hour\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTerminal Configuration\u003c\/td\u003e\n\u003ctd\u003e16 Pin\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConductor Wire Size\u003c\/td\u003e\n\u003ctd\u003e4 mm^2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eProfinet \/ EtherNet-IP Industrial Control Characteristics\u003c\/h3\u003e\n\u003cp\u003eThe 1797-OB4D operates as a FLEX Ex I\/O output component within the Allen-Bradley 1797 platform. Its four sourcing output channels provide discrete actuator interface capability with electronic monitoring functions for lead break detection, overload conditions, and short circuit protection. The module architecture supports deterministic output state control through the FLEX Ex I\/O backplane communication structure.\u003c\/p\u003e\n\u003cp\u003eThe module uses firmware-controlled output diagnostics and maintains defined electrical behavior for connected field devices. Installation requires consideration of output current loading, conductor sizing, and field-side power consumption limits to maintain specified operating conditions.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: What type of output signal does the 1797-OB4D provide?\u003cbr\u003eA: The 1797-OB4D provides four nonisolated sourcing outputs for discrete field device control.\u003c\/p\u003e\n\u003cp\u003eQ: Does the module include output circuit protection?\u003cbr\u003eA: Yes. The module provides electronic protection functions including lead break detection, overload protection, and short circuit protection.\u003c\/p\u003e\n\u003cp\u003eQ: What load range is supported by the output channels?\u003cbr\u003eA: The specified output load range is 30-5000 ohms.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cp\u003eInstall the module according to the FLEX Ex I\/O system hardware configuration requirements. Verify that field wiring matches the specified conductor size and that connected loads remain within the defined output range.\u003c\/p\u003e\n\u003cp\u003eUse appropriate grounding and shielding practices for installed control wiring. Separate output conductors from high-voltage power cables and high-noise sources to reduce electrical interference. Confirm correct terminal assignments before applying field-side power.\u003c\/p\u003e\n\u003cp\u003eCheck mechanical mounting engagement and connector seating before system startup. Validate output channel operation through the controller configuration and verify diagnostic status indicators during commissioning.\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":43787608064090,"sku":"1797-OB4D","price":123.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0612\/4601\/3530\/files\/1797-OB4D2.jpg?v=1785913114","url":"https:\/\/www.plcmasters.com\/products\/allen-bradley-1797-ob4d-flex-ex-i-o-output-module","provider":"PLC Masters Ltd.","version":"1.0","type":"link"}