{"product_id":"1771-omd-b-allen-bradley-digital-output-module-new-original-stock","title":"1771-OMD\/B Allen-Bradley Digital Output Module | New \u0026 Original Stock","description":"\u003ch2\u003eAllen-Bradley 1771-OMD\/B 1771 PLC-5 I\/O System Digital AC Output Module\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eAllen-Bradley 1771-OMD\/B\u003c\/strong\u003e serves as the primary \u003cstrong\u003e1771-OMD\u003c\/strong\u003e Digital AC Output Module utilized to execute isolated AC switching functions across 1771 PLC-5 I\/O System platforms.\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-OMD\/B\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\u003eModule Type\u003c\/td\u003e\n\u003ctd\u003eDigital AC Output Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Channels\u003c\/td\u003e\n\u003ctd\u003e16 isolated outputs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Voltage\u003c\/td\u003e\n\u003ctd\u003e184-250 VAC (Voltage Category: 220 VAC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Continuous Current Per Output\u003c\/td\u003e\n\u003ctd\u003e2 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Current Per Module\u003c\/td\u003e\n\u003ctd\u003e8 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBackplane Current\u003c\/td\u003e\n\u003ctd\u003e700 mA at 5 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Dissipation\u003c\/td\u003e\n\u003ctd\u003e7 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIsolation Voltage\u003c\/td\u003e\n\u003ctd\u003e1500 VAC for 1 minute\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\u003eTypical DC Signal Delay (Off)\u003c\/td\u003e\n\u003ctd\u003e50 ms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWiring Arm\u003c\/td\u003e\n\u003ctd\u003e1771-WH\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCoating\u003c\/td\u003e\n\u003ctd\u003eConformal Coat\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\u003eStorage Temp\u003c\/td\u003e\n\u003ctd\u003e-40 to 85 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHumidity\u003c\/td\u003e\n\u003ctd\u003e5 to 95% non-condensing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e178 x 50 x 180 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.77 kg (1.69 lbs)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eProfinet \/ EtherNet\/IP Deterministic Networks and I\/O Density Scaling\u003c\/h3\u003e\n\u003cp\u003eThe 1771-OMD\/B routes 16 independent output channels within a single slot footprint, optimizing I\/O density scaling inside legacy 1771 chassis topologies. When interfacing with supervisory hardware across Profinet or EtherNet\/IP deterministic networks, the backplane bus communication velocity remains stable due to the 700 mA current profile of the module. Conformal coating updates included in the Series B architecture preserve structural trace integrity, ensuring continuous firmware flash compatibility and predictable logic processing when high inductive loads are switched concurrently.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: What is the maximum cumulative current limitation for the entire 1771-OMD\/B module?\u003c\/p\u003e\n\u003cp\u003eA: While individual channels can support a maximum continuous load of 2 A, the cumulative electrical current across all 16 channels must not exceed 8 A per module.\u003c\/p\u003e\n\u003cp\u003eQ: Does the 1771-OMD\/B module include internal short-circuit fuse protection for each channel?\u003c\/p\u003e\n\u003cp\u003eA: No. The module does not contain internal per-channel fusing. External fusing is required for each channel path to safeguard the output triacs from overcurrent failures.\u003c\/p\u003e\n\u003cp\u003eQ: Can the 1771-OMD\/B be removed from the chassis while the backplane is energized?\u003c\/p\u003e\n\u003cp\u003eA: No. Online removal or insertion under power is not supported by the 1771 chassis backplane architecture and can induce electrical damage or trigger processor faults.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eWiring Arm Connection:\u003c\/strong\u003e Secure all field terminations to the 1771-WH wiring arm prior to latching the arm onto the module chassis pivot point.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConductor Separation:\u003c\/strong\u003e Route AC output load lines through separate physical wire pathways from low-voltage DC analog signaling or communication cables to avoid inductive interference.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInductive Load Suppression:\u003c\/strong\u003e Install external RC surge suppressors across connected AC inductive loads (such as solenoids or motor starter coils) to minimize voltage spikes during turn-off cycles.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChassis Slot Grounding:\u003c\/strong\u003e Ensure the universal 1771 I\/O chassis grounding strip is connected to an absolute low-impedance earth ground to verify 1500 VAC channel isolation performance.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Allen Bradley","offers":[{"title":"Default Title","offer_id":43425796161626,"sku":"1771-OMD B","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0710\/5957\/0778\/files\/22._e01a0085-1795-4c55-9cb2-fbbf2d818092.jpg?v=1779935937","url":"https:\/\/www.spareoil.com\/products\/1771-omd-b-allen-bradley-digital-output-module-new-original-stock","provider":"SpareOil Automation","version":"1.0","type":"link"}