{"product_id":"1771-oan-allen-bradley-32-point-digital-output-module-plc-5","title":"1771-OAN Allen-Bradley 32 Point Digital Output Module PLC-5","description":"\u003cp\u003eConfigured for switching 32 discrete AC load circuits in PLC-5 chassis networks, the \u003cstrong\u003eAllen-Bradley 1771-OAN\/A\u003c\/strong\u003e (\u003cstrong\u003e1771-OAN\u003c\/strong\u003e Digital Output Module) provides direct physical\/electrical execution of triac-based 80-265 VAC output states.\u003c\/p\u003e\n\u003ch3\u003eCatalog Identity and Spare Cross-Reference\u003c\/h3\u003e\n\u003cfigure\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eMarking\u003c\/th\u003e\n\u003cth\u003eMeaning\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e1771-OAN\u003c\/td\u003e\n\u003ctd\u003eBase catalog number, 32-point AC digital output\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1771-OAN\/A\u003c\/td\u003e\n\u003ctd\u003eRevision A hardware\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1771-0AN\u003c\/td\u003e\n\u003ctd\u003eAlternate spare vendor spelling\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1771OAN\u003c\/td\u003e\n\u003ctd\u003eNon-hyphenated catalog string used on nameplate\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eHardware Specifications\u003c\/h3\u003e\n\u003cfigure\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-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\u003eJapan\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.46 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShipping Dimensions\u003c\/td\u003e\n\u003ctd\u003e3 x 14.5 x 25.8 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Points\u003c\/td\u003e\n\u003ctd\u003e32 (grouped 8 per group, 4 groups)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Voltage\u003c\/td\u003e\n\u003ctd\u003e80-265 VAC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency\u003c\/td\u003e\n\u003ctd\u003e50\/60 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Module Current\u003c\/td\u003e\n\u003ctd\u003e8.0 A total\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax per Point\u003c\/td\u003e\n\u003ctd\u003e1.0 A (typical 1771 AC output class)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax per Group\u003c\/td\u003e\n\u003ctd\u003e2.0 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBackplane Supply\u003c\/td\u003e\n\u003ctd\u003e5 VDC from 1771 chassis (logic side)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003eLogic side approx 2.9 W (per 1771 AC output class)\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\u003eMounting\u003c\/td\u003e\n\u003ctd\u003e1771 rack mountable, single slot\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStatus\u003c\/td\u003e\n\u003ctd\u003eDiscontinued by manufacturer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eBackplane Bus Behavior and Firmware Flash Compatibility\u003c\/h3\u003e\n\u003cp\u003eThe 1771-OAN exchanges I\/O state over the PLC-5 1771 backplane using the parallel remote I\/O scan protocol. Backplane bus communication velocity licences are not user-configurable on 1771 hardware; scan rate is fixed by the adapter module and processor type. Firmware flash compatibility is irrelevant because the module contains no field-upgradable firmware—revision A hardware is keyed electronically through the chassis jumper and processor I\/O configuration file. Replacement with 1771-OAN\/A requires matching the processor's electronic keying setting to avoid a major fault on power-up. Triac outputs are zero-cross switched; optical isolation separates AC load power from 5 VDC backplane logic at 1500 VAC dielectric rating.\u003c\/p\u003e\n\u003ch3\u003eOrdering Information\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1 x 1771-OAN module (base unit, revision subject to stock)\u003c\/li\u003e\n\u003cli\u003e1 x 1771 removable terminal wiring arm (ships separate on new-old-stock units)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSite Wiring and Mounting Notes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSeat module in any free 1771-A1B or higher chassis slot with keying strip aligned\u003c\/li\u003e\n\u003cli\u003eTerminate field AC supply to the removable terminal block, 14-22 AWG copper\u003c\/li\u003e\n\u003cli\u003eBond chassis ground bar to panel ground before applying 80-265 VAC field power\u003c\/li\u003e\n\u003cli\u003eDo not mix 120 VAC and 240 VAC group supplies unless each group is independently fed\u003c\/li\u003e\n\u003cli\u003eAllow forced-air clearance above chassis: module dissipates heat through side rails\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eIs the 1771-OAN hot-swappable under live backplane power?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eNo. PLC-5 1771 I\/O does not support live insertion. Remove 5 VDC backplane power and AC field power before extracting the module. Triac snubber networks retain charge after AC removal; wait 30 seconds before handling terminal block.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the per-point current limit versus group limit?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eEach of the 32 points is rated 1.0 A max. Points are grouped 8 per group, each group limited to 2.0 A. Total module current must not exceed 8.0 A across all four groups simultaneously.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes revision A support 277 VAC field supply?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eNo. Upper bound is 265 VAC RMS. Applying 277 VAC exceeds triac blocking voltage margin and voids dielectric isolation ratings between load side and backplane logic.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow is zero-cross switching timed relative to 50 Hz and 60 Hz?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eTriac fires at the next AC zero crossing after the backplane logic commands ON. Turn-on delay is bounded by half-cycle: 10 ms at 50 Hz, 8.33 ms at 60 Hz. Turn-off occurs at the following zero cross after OFF command.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan 1771-OAN share a chassis with 1771-OBD DC output modules?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes. Mixed AC and DC output modules occupy separate slots and draw independent field power. Backplane 5 VDC logic current is the only shared resource; total chassis backplane current must stay under the power supply rating.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat wire gauge fits the terminal block?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eTerminal block accepts 14 AWG to 22 AWG stranded or solid copper, 60 deg C rating minimum. Torque terminal screws to 0.8 N·m. Loose terminations cause thermal rise and intermittent triac firing.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs electronic keying mandatory when replacing with 1771-OAN\/A?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eProcessor I\/O configuration has keying set to exact, compatible, or disabled. With exact keying, 1771-OAN\/A replaces 1771-OAN without fault. With disabled keying, any 1771 32-point AC output occupies the logical address but electrical spec must still match load.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat happens to outputs on loss of backplane 5 VDC?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eTriac gates lose drive and all 32 outputs transition to OFF state regardless of AC field power presence. Outputs do not latch last state. Restoring backplane power returns control to processor scan table.\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":46066443976877,"sku":"1771-OAN","price":88.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0733\/1613\/9181\/files\/allen-bradley_1771-oan.jpg?v=1786890664","url":"https:\/\/www.maxwellplc.com\/ru\/products\/1771-oan-allen-bradley-32-point-digital-output-module-plc-5","provider":"Maxwell PLC Ltd","version":"1.0","type":"link"}