{"product_id":"allen-bradley-1756-ob16d-diagnostic-output-module","title":"Allen-Bradley 1756-OB16D Diagnostic Output Module","description":"\u003cdiv\u003e\u003cp\u003eThe 1756-OB16D Diagnostic Output Module from Allen-Bradley (Rockwell Automation) is a ControlLogix 16‑point DC diagnostic output block that accepts a 19.2–30 V DC supply and provides 16 discrete 24 V DC outputs. Each output is capable of 2 A, with a module-wide maximum of 8 A at 30°C (4 A at 60°C); backplane current is about 250 mA at 5 V and 140 mA at 24 V, and the module uses a removable 36‑pin terminal block (1756-TBCH\/1756-TBS6H) for field wiring. It delivers full diagnostic data for each channel, including no-load, blown fuse, output verify fault, and field power loss, with a timestamp of diagnostics accurate to ±1 ms and a configurable pulse‑test width to verify operation. Isolation voltage is rated at 50 V continuous, supporting safe operation in industrial environments. This OB16D is designed for ControlLogix ecosystems and partners with standard 1756 I\/O backplanes, making it well suited for applications such as DC relay and contactor control where per‑channel diagnostics enhance fault detection and maintenance planning. In practice, engineers leverage its 16 diagnostic outputs to monitor coil health, fuse integrity, and power delivery while maintaining precise timing information for troubleshooting within ControlLogix projects. \u003c\/p\u003e\u003c\/div\u003e","brand":"Allen-Bradley","offers":[{"title":"Used Surplus - Excellent Condition","offer_id":51658919444782,"sku":null,"price":196.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/0818\/1038\/files\/Ebay_website_image_3093df3f-c24f-44c5-b8f9-6bb5abc63b7e.jpg?v=1769525548","url":"https:\/\/plgautomation.com\/products\/allen-bradley-1756-ob16d-diagnostic-output-module","provider":"PLG Automation ","version":"1.0","type":"link"}