{"product_id":"allen-bradley-1794-of4i-isolated-analog-output-module","title":"Allen-Bradley 1794-OF4I FLEX I\/O Isolated Analog Output Module","description":"\u003ch3\u003eDescription\u003c\/h3\u003e\u003cp\u003eThe Allen-Bradley 1794-OF4I is a high-performance, 4-channel isolated analog output module designed for the FLEX I\/O distributed I\/O platform. This module provides precise digital-to-analog conversion for industrial control applications, offering 16-bit resolution (15 bits plus sign) to ensure accurate signal delivery to field devices. It is engineered for robust performance in industrial environments, supporting a variety of terminal bases including the TB2, TB3, TB3S, TB3T, TB3TS, and TBN series.\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e4 isolated analog output channels.\u003c\/li\u003e\n\u003cli\u003e16-bit resolution (15 bits plus sign) for high-precision control.\u003c\/li\u003e\n\u003cli\u003eFast update rate of 2.5 to 5.0 ms for all channels.\u003c\/li\u003e\n\u003cli\u003eStep response time of less than 25 microseconds to 63% of full-scale.\u003c\/li\u003e\n\u003cli\u003eSupports 0-20 mA current output ranges.\u003c\/li\u003e\n\u003cli\u003eCompatible with multiple FLEX I\/O terminal base options for flexible wiring.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eApplications\u003c\/h3\u003e\u003cp\u003eThis module is ideal for distributed control systems requiring isolated analog outputs, such as controlling proportional valves, variable frequency drives (VFDs), or other actuators that require a 0-20 mA control signal. It is widely used in process automation, manufacturing, and material handling systems where signal isolation is necessary to prevent ground loops and electrical noise interference.\u003c\/p\u003e\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Model\u003c\/td\u003e\n\u003ctd\u003e1794-OF4I\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChannels\u003c\/td\u003e\n\u003ctd\u003e4 Isolated\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResolution\u003c\/td\u003e\n\u003ctd\u003e15 bits plus sign\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUpdate Rate\u003c\/td\u003e\n\u003ctd\u003e2.5 \/ 5.0 ms (all channels)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Current\u003c\/td\u003e\n\u003ctd\u003e0 to 20 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResistive Load\u003c\/td\u003e\n\u003ctd\u003e0 to 750 Ohms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Overload\u003c\/td\u003e\n\u003ctd\u003e30V continuous or 32 mA continuous (one channel at a time)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e-20 to 55 degC (-4 to 131 degF)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRelative Humidity\u003c\/td\u003e\n\u003ctd\u003e5 to 95% noncondensing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eInstallation Guidelines\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eEnsure the power is disconnected from the FLEX I\/O system before installing or removing the module.\u003c\/li\u003e\n\u003cli\u003eMount the module onto a compatible terminal base (TB2, TB3, TB3S, TB3T, TB3TS, or TBN).\u003c\/li\u003e\n\u003cli\u003eUse shielded twisted-pair cabling for analog signals to minimize electromagnetic interference (EMI).\u003c\/li\u003e\n\u003cli\u003eEnsure proper grounding of the terminal base to the DIN rail or chassis ground to maintain signal integrity.\u003c\/li\u003e\n\u003cli\u003eMaintain adequate ventilation around the module to ensure the surrounding air temperature does not exceed 55 degC.\u003c\/li\u003e\n\u003cli\u003eHandle with care to prevent electrostatic discharge (ESD) damage to the internal circuitry.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\u003ch3\u003eWhat is the primary function of the 1794-OF4I?\u003c\/h3\u003e\u003cp\u003eThe 1794-OF4I is an isolated analog output module used to convert digital data from a PLC or controller into analog current signals (0-20 mA) to drive field instruments and actuators.\u003c\/p\u003e\u003ch3\u003eIs this module compatible with all FLEX I\/O terminal bases?\u003c\/h3\u003e\u003cp\u003eThe module is compatible with the TB2, TB3, TB3S, TB3T, TB3TS, and TBN terminal bases. Please verify your specific wiring requirements before selecting the base.\u003c\/p\u003e\u003ch3\u003eWhat is the maximum load resistance for the output?\u003c\/h3\u003e\u003cp\u003eThe module supports a resistive load on the output of 0 to 750 Ohms.\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":50857033138428,"sku":"1794-OF4I","price":81.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0787\/9983\/1292\/files\/wm_1_aa337e7a-031e-49b6-8223-e0bbd174dfa7.jpg?v=1785564849","url":"https:\/\/www.electronicplc.com\/ar\/products\/allen-bradley-1794-of4i-isolated-analog-output-module","provider":"Electronic PLC","version":"1.0","type":"link"}