{"product_id":"allen-bradley-1771-oad-plc-5-digital-ac-output-module","title":"Allen Bradley 1771-OAD PLC 5 Digital AC Output Module","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eAllen Bradley 1771-OAD\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eserves as a high-density digital AC output interface for the Universal I\/O chassis in PLC-5 systems. This module provides 16 independent outputs to control various 120V AC loads such as motor starters, solenoids, and indicators. We offer this unit as\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e100% Brand New\u003c\/strong\u003e, original factory stock, ensuring the high-amperage switching capability and backplane compatibility required for mission-critical industrial automation.\u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cp\u003eThe 1771-OAD delivers robust power handling across its 16 channels, utilizing zero-crossing switching to minimize electrical noise.\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr class=\"firstRow\"\u003e\n\u003ctd\u003e\u003cstrong\u003eFeature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eManufacturer\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eAllen Bradley (Rockwell Automation)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eModule Type\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eDigital AC Output Module\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eNumber of Outputs\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e16 Outputs\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eVoltage Category\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e120 Volts AC\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eOperating Voltage Range\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e10 to 138 Volts AC\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eMax Continuous Current (Per Point)\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e2 Amperes\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eMax Continuous Current (Per Module)\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e8 Amperes\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eBackplane Current Requirement\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e1.5 Amperes\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eSignal Delay (Off to On)\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eZero crossing: 8.3ms @ 60Hz \/ 10.0ms @ 50Hz\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eSignal Delay (On to Off)\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e45 (\u003cspan class=\"math-inline\"\u003e$\\pm$\u003c\/span\u003e15) milliseconds\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eWiring Arm\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e1771-WH\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e1.31 lbs (0.60 kg)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eEngineering Advantages\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eHigh-Amperage Switching:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThis module supports a maximum continuous current of 2 Amps per output. This high rating allows the module to drive larger contactors and actuators directly, often eliminating the need for interposing relays and reducing overall cabinet wiring complexity.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eZero-Crossing Technology:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe 1771-OAD synchronizes output activation with the AC voltage zero-crossing point. This method drastically reduces Electromagnetic Interference (EMI) and inrush current spikes, extending the mechanical life of connected field devices and protecting sensitive nearby electronics.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eOptimized Thermal Management:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eWhile handling 2A per point, the module manages heat dissipation across a total module limit of 8A. The 1771 rack-mount design facilitates natural convection cooling, maintaining stable operation even when controlling high-duty cycle loads in industrial enclosures.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eSimplified Field Maintenance:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe module utilizes the 1771-WH wiring arm, which detaches from the module housing. This allows for rapid hardware replacement without disconnecting any field-side wiring, ensuring that the 16-point configuration remains intact and error-free during maintenance swaps.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFAQs\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCan the 1771-OAD control DC loads?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eNo. The 1771-OAD utilizes Triac switching components specifically designed for AC cycles. Attempting to switch DC loads will prevent the output from turning off, as Triacs require an AC zero-crossing to reset the circuit.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the maximum total current I can pull from the 1771-OAD?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe module supports a total of 8 Amps across all 16 channels. While individual points handle up to 2 Amps, you must ensure the aggregate load does not exceed the 8A module limit to prevent overheating or internal fuse failure.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eDoes this module require a specific wiring arm?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes, the 1771-OAD requires the 1771-WH wiring arm for field-side terminations. This arm provides the secure interface needed to handle the high-current demands of 120V AC applications.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eHow does the signal delay affect high-speed applications?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe zero-crossing turn-on delay (8.3ms at 60Hz) ensures clean activation but introduces a slight latency. For applications requiring microsecond response times, consider DC output modules; however, for standard motor control and industrial sequencing, this delay remains well within acceptable parameters.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":52788406845749,"sku":"1771-OAD","price":66.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0973\/7630\/5461\/files\/1771-OAD.png?v=1777273316","url":"https:\/\/www.5gplc.com\/products\/allen-bradley-1771-oad-plc-5-digital-ac-output-module","provider":"High Five PLC Solution Limited","version":"1.0","type":"link"}