{"product_id":"allen-bradley-1771-oan-plc-5-ac-digital-output-module","title":"Allen-Bradley 1771-OAN PLC-5 AC Digital Output Module","description":"\u003cp\u003eThe \u003cstrong\u003eAllen-Bradley 1771-OAN\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003e1771-OAN\u003c\/strong\u003e Digital Output Module, operates as a dedicated hardware component for high-density AC load control and signal switching within Allen-Bradley PLC-5 systems. The module provides 32 solid-state AC outputs partitioned into 4 isolated groups of 8 channels each, controlling solenoids, motor starters, and contactors across a operating voltage range of 80 to 265 VAC.\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\u003e1771-OAN\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\u003e2.95 lbs (1.34 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003eStandard 1771 I\/O Single-Slot Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e0 to 60 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003eBackplane Current: 0.3 A at 5 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Count\u003c\/td\u003e\n\u003ctd\u003e32 High-Density AC Points (4 groups of 8)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Voltage\u003c\/td\u003e\n\u003ctd\u003e80 to 265 VAC (Nominal: 120\/240 VAC, 47-63 Hz)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Current per Point\u003c\/td\u003e\n\u003ctd\u003e1.0 A at 30 deg C \/ 0.3 A at 60 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Current per Group\u003c\/td\u003e\n\u003ctd\u003e2.0 A at 30 deg C \/ 0.6 A at 60 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Current per Module\u003c\/td\u003e\n\u003ctd\u003e8.0 A at 30 deg C \/ 2.4 A at 60 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Line\u003c\/td\u003e\n\u003ctd\u003eAllen-Bradley PLC-5 1771 I\/O Platform\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eBackplane Bus \u0026amp; Deterministic Control\u003c\/h3\u003e\n\u003cp\u003eThe 1771-OAN interfaces with the 1771 universal I\/O chassis backplane, receiving bit-mapped output state commands directly from the PLC-5 processor over the parallel backplane bus during each I\/O scan. The module incorporates optical isolation between backplane logic and field-side AC switching circuits to protect internal backplane communication lines from switching transients. Consistent firmware flash compatibility and signal latching logic ensure stable backplane bus communication velocity across complex PLC-5 chassis configurations.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: What are the thermal derating restrictions on current capacity for the 1771-OAN module?\u003c\/p\u003e\n\u003cp\u003eA: Current capacity derates with temperature: maximum continuous current per point is 1.0 A at 30 deg C (derating to 0.3 A at 60 deg C), while maximum module total current is 8.0 A at 30 deg C (derating to 2.4 A at 60 deg C).\u003c\/p\u003e\n\u003cp\u003eQ: Can different AC supply voltages be used for the 4 groups on a single 1771-OAN module?\u003c\/p\u003e\n\u003cp\u003eA: Yes, the 32 channels are split into 4 isolated groups of 8 points, allowing each group common to be powered from an independent AC voltage source within the 80 to 265 VAC range.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower Isolation:\u003c\/strong\u003e Turn off chassis backplane power and field AC power before inserting or removing the module from the 1771 I\/O rack.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eKeying Band Alignment:\u003c\/strong\u003e Ensure correct plastic keying bands are inserted into the 1771 chassis backplane connector to prevent accidental insertion of incorrect module types.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eField Terminal Wiring:\u003c\/strong\u003e Connect AC field loads to the 1771-WN wiring arm attached to the chassis slot, maintaining separate power feeds for each 8-point common group.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFuse Protection:\u003c\/strong\u003e Install fast-acting external fuses on each group power lead to protect output switching triacs from overcurrent or short-circuit damage.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSurge Suppression:\u003c\/strong\u003e Connect RC surge suppressors across inductive field loads (solenoids, contactor coils) to minimize electromagnetic interference and voltage spikes.\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":52734378311960,"sku":"1771-OAN","price":270.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0892\/3483\/3688\/files\/1771-OAN2_Cocoai_7fccaff1-bbf9-4ff6-8f99-1efb724a8c8c.jpg?v=1789872045","url":"https:\/\/www.innoplcsync.com\/products\/allen-bradley-1771-oan-plc-5-ac-digital-output-module","provider":"InnoPLC Sync Co., Ltd.","version":"1.0","type":"link"}