{"product_id":"allen-bradley-1756-ob16d-16-point-dc-diagnostic-output","title":"Allen-Bradley 1756-OB16D | 16-Point DC Diagnostic Output","description":"\u003ch2\u003e\u003cstrong\u003eAllen-Bradley ControlLogix 16-Point Diagnostic DC Output Module 1756-OB16D\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThe Allen-Bradley \u003cstrong style=\"color: #2e74b5;\"\u003e1756-OB16D\u003c\/strong\u003e is an advanced diagnostic output module for ControlLogix systems. It provides 16 sourcing DC outputs with per-point electronic fusing and comprehensive health monitoring. This module is designed for applications requiring high reliability and detailed fault detection.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eCore Specifications\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand \u0026amp; Model:\u003c\/strong\u003e Allen-Bradley \u003cstrong style=\"color: #2e74b5;\"\u003e1756-OB16D\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries:\u003c\/strong\u003e ControlLogix Diagnostic I\/O Module\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e 16-Point Sourcing DC Output\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage Category:\u003c\/strong\u003e 12\/24V DC Source\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperating Voltage Range:\u003c\/strong\u003e 19.2 – 30V DC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutput Current (Per Point):\u003c\/strong\u003e 2 A Max @ 30°C, derated to 1 A @ 60°C\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutput Current (Module Total):\u003c\/strong\u003e 8 A Max @ 30°C, 4 A Max @ 60°C\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBackplane Current:\u003c\/strong\u003e 250 mA @ 5V DC, 140 mA @ 24V DC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower Dissipation:\u003c\/strong\u003e 3.3 Watts Max @ 60°C\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIsolation Voltage:\u003c\/strong\u003e 50V Continuous (250V AC max)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong style=\"color: #c65911;\"\u003eAdvanced Diagnostics:\u003c\/strong\u003e Per-point detection for short circuits, no-load (open wire), and output verification.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eElectronic Fusing:\u003c\/strong\u003e Individual point protection (trips at 8A for 180 ms min, 10A for 120 ms min).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConfigurable Fault States:\u003c\/strong\u003e Set each point to Off, On, or Hold Last State in Program or Fault mode.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePulse Test Function:\u003c\/strong\u003e User-configurable pulse width for output verification testing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eData Echo:\u003c\/strong\u003e Reads back actual output state for confirmation and diagnostics.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003ePerformance \u0026amp; Timing\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutput Delay (OFF to ON):\u003c\/strong\u003e 55 µs typical \/ 1 ms max\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutput Delay (ON to OFF):\u003c\/strong\u003e 630 µs typical \/ 5 ms max\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOn-State Voltage Drop:\u003c\/strong\u003e 1.2V DC max @ 2 A\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOff-State Leakage:\u003c\/strong\u003e 1 mA max per point\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMinimum Load Current:\u003c\/strong\u003e 3 mA per point for no-load detection\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSurge Current:\u003c\/strong\u003e 4 A for 10 ms per point, repeatable every second\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eInstallation \u0026amp; Compatibility\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTerminal Block:\u003c\/strong\u003e Requires 36-pin RTB: 1756-TBCH (screw) or 1756-TBS6H (spring clamp).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChassis:\u003c\/strong\u003e Installs in any slot of a compatible 1756 ControlLogix chassis.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWiring:\u003c\/strong\u003e Follow 24V DC sourcing output practices. Ensure external power supply is within 19.2-30V DC.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGrouping:\u003c\/strong\u003e 16 points divided into 2 isolated groups of 8.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003ePhysical \u0026amp; Environmental\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperating Temperature:\u003c\/strong\u003e 0° to 60°C (32° to 140°F)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStorage Temperature:\u003c\/strong\u003e -40° to 85°C (-40° to 185°F)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIsolation Test:\u003c\/strong\u003e 2546V for 1 second (group-to-group, user-to-system)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnclosure:\u003c\/strong\u003e None (for chassis mounting)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSlot Width:\u003c\/strong\u003e 1 Slot\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003ePackaging \u0026amp; Shipping\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eOne Allen-Bradley \u003cstrong\u003e1756-OB16D\u003c\/strong\u003e diagnostic output module.\u003c\/li\u003e\n\u003cli\u003eSecure industrial packaging.\u003c\/li\u003e\n\u003cli\u003eShipped via FedEx, UPS, or DHL.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eFAQ\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhat is \"no-load\" detection?\u003c\/strong\u003e\u003cbr\u003eIt detects an open wire or missing load when the output is commanded ON, helping to identify wiring faults or disconnected devices.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCan I replace a blown fuse on this module?\u003c\/strong\u003e\u003cbr\u003eNo. Protection is provided by \u003cstrong\u003eelectronic fusing\u003c\/strong\u003e which resets automatically after the fault is cleared; there are no physical fuses to replace.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHow is this module different from a standard output module?\u003c\/strong\u003e\u003cbr\u003eIt adds advanced per-point diagnostics (short, open, verification) and electronic fusing, which are not available on standard modules like the 1756-OB16.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":51047656456324,"sku":"1756-OB16D","price":193.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/7454\/7844\/files\/1756-OB16D-2.jpg?v=1767706597","url":"https:\/\/www.etowonauto.com\/az\/products\/allen-bradley-1756-ob16d-16-point-dc-diagnostic-output","provider":"Etowon Auto","version":"1.0","type":"link"}