{"product_id":"allen-bradley-1738-ob8em8-armorpoint-i-o-output-module","title":"Allen-Bradley 1738-OB8EM8 ArmorPoint I\/O Output Module","description":"\u003ch1\u003eAllen-Bradley 1738-OB8EM8 ArmorPoint I\/O Output Module\u003c\/h1\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eAllen-Bradley 1738-OB8EM8\u003c\/strong\u003e, also cataloged as the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1738-OB8EM8 DC Output Module\u003c\/strong\u003e, operates as a dedicated hardware component for 24 V DC discrete load switching within ArmorPoint distributed I\/O networks. Configured for non-isolated sourcing output execution, the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eAllen-Bradley 1738-OB8EM8\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eprovides direct electrical actuation of 8-channel digital loads through M8 connector interfaces under a nominal 24 V DC control architecture.\u003c\/p\u003e\n\u003ch3\u003eSuffix Breakdown \u0026amp; Model Matrix\u003c\/h3\u003e\n\u003cp\u003eThe model 1738-OB8EM8 is structured as follows:\u003c\/p\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e1738: ArmorPoint I\/O platform identifier\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eOB8: 8-point output module configuration\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eEM8: M8 (Pico) connectorized field interface variant\u003cbr\u003eNo additional sub-encoding is defined for channel grouping or electrical segmentation.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eHardware Specifications\u003c\/h3\u003e\n\u003ctable class=\"w-fit min-w-(--thread-content-width)\"\u003e\n\u003cthead\u003e\n\u003ctr class=\"firstRow\"\u003e\n\u003cth class=\"last:pe-10\"\u003eParameter\u003c\/th\u003e\n\u003cth class=\"last:pe-10\"\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\u003e1738-OB8EM8\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\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.46 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e-20 deg C to 60 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e24 V DC nominal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutputs per Module\u003c\/td\u003e\n\u003ctd\u003e8 sourcing outputs (1 group)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Type\u003c\/td\u003e\n\u003ctd\u003eNon-isolated DC sourcing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNominal Voltage\u003c\/td\u003e\n\u003ctd\u003e24 V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Voltage\u003c\/td\u003e\n\u003ctd\u003e28.8 V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConnector Type\u003c\/td\u003e\n\u003ctd\u003eM8 (Pico)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIsolation Voltage\u003c\/td\u003e\n\u003ctd\u003e50 V continuous\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eBackplane Deterministic Output Execution and I\/O Scaling\u003c\/h3\u003e\n\u003cp\u003eWithin the ArmorPoint architecture, the 1738-OB8EM8 executes output state transitions via PointBus synchronized backplane communication. Each channel is updated in deterministic cycles with group-based output handling (1 x 8-channel block). I\/O density scaling is governed by backplane current distribution and module-level thermal dissipation under sealed IP-rated housing constraints. Non-isolated channel grouping imposes shared reference potential across all outputs.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions (FAQ)\u003c\/h3\u003e\n\u003cp\u003eQ: Does the 1738-OB8EM8 support hot-swapping under load conditions?\u003cbr\u003eA: Yes, RIUP is supported. However, all 8 outputs are forced to a de-energized state during module removal and reinitialization of the PointBus interface.\u003c\/p\u003e\n\u003cp\u003eQ: Are the output channels individually isolated?\u003cbr\u003eA: No. All 8 outputs are non-isolated and share a common sourcing reference within a single output group.\u003c\/p\u003e\n\u003cp\u003eQ: What is the impact of exceeding 28.8 V DC on output channels?\u003cbr\u003eA: Operation beyond 28.8 V DC exceeds rated limits and may cause output driver saturation or permanent switching element degradation.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cp\u003eM8 connectors must be fully seated and locked to maintain IP67\/IP69K sealing integrity. Output wiring shall maintain separation from high-energy switching conductors to reduce inductive coupling into shared reference lines. Shield termination must be implemented at a single controlled grounding point to avoid circulating ground currents. During installation or replacement, ensure output loads are in a safe de-energized state to prevent unintended actuation during PointBus resynchronization.\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":43497694068826,"sku":"1738-OB8EM8","price":123.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0612\/4601\/3530\/files\/1738-OB8EM82.jpg?v=1781507709","url":"https:\/\/www.plcmasters.com\/products\/allen-bradley-1738-ob8em8-armorpoint-i-o-output-module","provider":"PLC Masters Ltd.","version":"1.0","type":"link"}