{"product_id":"allen-bradley-1771-oad-digital-ac-output-module","title":"Allen Bradley 1771-OAD Digital AC Output Module","description":"\u003ch2\u003eAllen Bradley 1771-OAD Digital AC Output Module\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eAllen Bradley 1771-OAD\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003e1771-OAD\u003c\/strong\u003e Digital AC Output Module, operates as a dedicated hardware component for discrete AC load switching within PLC-5 1771 I\/O chassis platforms. The module provides sixteen programmable AC output channels with zero-crossing switching and PLC backplane communication.\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\u003e1771-OAD\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\u003e1.75 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003eBackplane current: 0.7 A at 5 VDC \/ 1.5 A specified in module data\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModule Type\u003c\/td\u003e\n\u003ctd\u003eDigital AC Output Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Line\u003c\/td\u003e\n\u003ctd\u003ePLC-5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNumber of Outputs\u003c\/td\u003e\n\u003ctd\u003e16 Outputs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Type\u003c\/td\u003e\n\u003ctd\u003eDigital AC solid-state output\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVoltage Category\u003c\/td\u003e\n\u003ctd\u003e120 VAC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Voltage Range\u003c\/td\u003e\n\u003ctd\u003e10-138 VAC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency Range\u003c\/td\u003e\n\u003ctd\u003e50\/60 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Continuous Current Per Output\u003c\/td\u003e\n\u003ctd\u003e2 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Current Per Module\u003c\/td\u003e\n\u003ctd\u003e8 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eData Format\u003c\/td\u003e\n\u003ctd\u003eBDC or Natural Binary\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTypical AC Signal Delay (Off)\u003c\/td\u003e\n\u003ctd\u003e45 +\/- 15 ms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOff to On Signal Delay\u003c\/td\u003e\n\u003ctd\u003eZero crossing: 8.3 ms at 60 Hz; 10.0 ms at 50 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWiring Arm Compatibility\u003c\/td\u003e\n\u003ctd\u003e1771-WH\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting Type\u003c\/td\u003e\n\u003ctd\u003eRack Mountable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTerminal Type\u003c\/td\u003e\n\u003ctd\u003eScrew Terminal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003ePLC-5 Digital AC Output Control\u003c\/h3\u003e\n\u003cp\u003eThe 1771-OAD provides sixteen programmable digital AC output channels for PLC-5 controller applications. The module converts PLC processor output commands into AC switching signals for connected field devices within the 1771 I\/O architecture.\u003c\/p\u003e\n\u003cp\u003eThe module supports a 12-120 VAC voltage category with an operating range of 10-138 VAC. Zero-crossing switching is used for output transition timing, reducing switching stress during AC load activation.\u003c\/p\u003e\n\u003cp\u003eThe 1771-OAD communicates through the PLC-5 backplane bus and supports BDC and Natural Binary data formats. The module occupies a rack slot in compatible 1771 I\/O chassis configurations and uses 1771-WH field wiring connections.\u003c\/p\u003e\n\u003ch3\u003eIndustrial Control Backplane Integration\u003c\/h3\u003e\n\u003cp\u003eThe 1771-OAD is designed for PLC-5 I\/O density scaling with sixteen discrete output points in a single module. Backplane bus communication transfers controller output states to the module logic circuitry.\u003c\/p\u003e\n\u003cp\u003eThe module supports PLC-5 deterministic backplane communication characteristics rather than network-based distributed I\/O operation. Hardware configuration requires correct chassis slot selection, processor compatibility, and I\/O addressing assignment.\u003c\/p\u003e\n\u003cp\u003eFirmware flash compatibility is not specified for this PLC-5 generation module. Operation depends on hardware configuration, controller programming, and installed chassis components.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: How many output channels are provided by the 1771-OAD?\u003cbr\u003eA: The 1771-OAD provides sixteen digital AC output channels.\u003c\/p\u003e\n\u003cp\u003eQ: What AC voltage range does the 1771-OAD support?\u003cbr\u003eA: The module supports a 10-138 VAC operating range within the 12-120 VAC voltage category.\u003c\/p\u003e\n\u003cp\u003eQ: What is the maximum current capacity of each output channel?\u003cbr\u003eA: Each output channel supports a maximum continuous current of 2 A, with a maximum module current rating of 8 A.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cp\u003eInstall the 1771-OAD module only in compatible 1771 I\/O chassis slots. The module is not compatible with 1771-A1, 1771-A2, or 1771-A4 chassis configurations. Verify chassis keying and slot assignment before insertion.\u003c\/p\u003e\n\u003cp\u003eConnect field devices using the 1771-WH wiring arm and confirm AC voltage polarity and load requirements before energizing outputs. Route AC output wiring separately from low-level signal cables and communication wiring.\u003c\/p\u003e\n\u003cp\u003eEnsure connected loads remain within the specified output current limits. Follow electrostatic discharge precautions when handling the module and verify PLC-5 configuration parameters before system operation.\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":43685067358298,"sku":"1771-OAD","price":123.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0612\/4601\/3530\/files\/1771-OAD2.jpg?v=1784617761","url":"https:\/\/www.plcmasters.com\/products\/allen-bradley-1771-oad-digital-ac-output-module","provider":"PLC Masters Ltd.","version":"1.0","type":"link"}