{"product_id":"allen-bradley-1769-oa8-compactlogix-ac-output-module","title":"Allen-Bradley 1769-OA8 CompactLogix AC Output Module","description":"\u003cp\u003eThe \u003cstrong\u003eAllen-Bradley 1769-OA8\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003e1769-OA8\u003c\/strong\u003e AC Output Module, operates as a dedicated hardware component for solid-state AC load switching within CompactLogix and MicroLogix 1500 controller platforms. The unit converts internal controller logic signals into 8 solid-state AC outputs across 2 isolated channel groups, providing direct physical execution for field devices such as solenoid actuators, magnetic contactors, and motor starters. Operating across a voltage range of 85 to 265 VAC at 47 to 63 Hz, the module draws a maximum bus current of 145 mA at 5 VDC directly from the 1769 Compact I\/O backplane interconnect.\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\u003e\u003cstrong\u003eParameter\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\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\u003e1769-OA8\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\u003eUSA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.56 lbs (0.26 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e4.65 in x 1.38 in x 3.43 in (11.8 cm x 3.5 cm x 8.7 cm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e0 to 60 deg C (32 to 140 deg F)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e0.725 W (Bus Power: 145 mA @ 5 VDC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHeat Dissipation\u003c\/td\u003e\n\u003ctd\u003e2.12 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Channels\u003c\/td\u003e\n\u003ctd\u003e8 AC outputs (2 isolated groups of 4 channels)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Voltage Range\u003c\/td\u003e\n\u003ctd\u003e85 to 265 VAC (120\/240 VAC nominal)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Frequency\u003c\/td\u003e\n\u003ctd\u003e47 to 63 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSignal Delay\u003c\/td\u003e\n\u003ctd\u003eTurn-on: 1\/2 cycle max; Turn-off: 1\/2 cycle max\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Supply Distance Rating\u003c\/td\u003e\n\u003ctd\u003e8 modules\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting Style\u003c\/td\u003e\n\u003ctd\u003eDIN Rail or Panel Mount\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWire Size\u003c\/td\u003e\n\u003ctd\u003e22 to 14 AWG solid, 22 to 16 AWG stranded\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eBackplane Bus Communication \u0026amp; Deterministic Processing\u003c\/h3\u003e\n\u003cp\u003eThe Allen-Bradley 1769-OA8 interfaces with the CompactLogix backplane via high-speed parallel bus connections, maintaining deterministic system execution and rapid output state updating. Firmware flash compatibility ensures seamless backplane timing synchronization with 1769-L2x, 1769-L3x, or MicroLogix 1500 processors, as well as 1769-ADN (DeviceNet) and 1769-AENTR (EtherNet\/IP) bus adapters. High-density I\/O channel scaling is achieved while observing the strictly enforced power supply distance rating limit of 8 modules from the primary 1769 system power supply (e.g., 1769-PA2, 1769-PB2, 1769-PA4, 1769-PB4). Onboard optocouplers isolate internal backplane logic circuitry from field-side AC voltage transients, preventing signal noise propagation back to the host CPU.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: What is the significance of the 8-module power supply distance rating for the 1769-OA8?\u003c\/p\u003e\n\u003cp\u003eA: The power supply distance rating dictates that the 1769-OA8 cannot be mounted more than 8 module slots away from the system power supply module. Exceeding this limit causes excessive backplane voltage drop and communication timing errors along the internal bus.\u003c\/p\u003e\n\u003cp\u003eQ: Can the two output channel groups on the 1769-OA8 operate at different AC supply voltages?\u003c\/p\u003e\n\u003cp\u003eA: Yes. Group 1 (outputs 0 to 3) and Group 2 (outputs 4 to 7) are galvanically separated with independent AC common connections. One group can operate on a 120 VAC supply line while the second group operates on a 240 VAC supply line simultaneously.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem Power Isolation\u003c\/strong\u003e: Remove all primary AC line power and backplane power before mounting, removing, or wiring the 1769-OA8 module to prevent hardware damage or electric shock.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDIN Rail \/ Panel Mounting\u003c\/strong\u003e: Secure the module onto a 35 mm DIN rail or panel-mount via screws. Ensure the tongue-and-groove side connectors lock firmly into the adjacent module or power supply before tightening the panel-mounting feet or DIN rail latch.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower Supply Placement\u003c\/strong\u003e: Verify that the module is positioned within 8 slots of the system power supply (1769-PA2, 1769-PB2, 1769-PA4, or 1769-PB4) to meet backplane current distribution requirements.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eField Wiring Termination\u003c\/strong\u003e: Strip conductors to recommended length and connect to the removable terminal block using 22 to 14 AWG solid or 22 to 16 AWG stranded copper wire. Route low-voltage communications and DC signals in separate conduits away from AC output load lines to prevent inductive noise coupling.\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":52681838559512,"sku":"1769-OA8","price":270.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0892\/3483\/3688\/files\/1769-OA82.png?v=1789437810","url":"https:\/\/www.innoplcsync.com\/products\/allen-bradley-1769-oa8-compactlogix-ac-output-module","provider":"InnoPLC Sync Co., Ltd.","version":"1.0","type":"link"}