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      Allen-Bradley 1756-OB16D
      Allen-Bradley 1756-OB16D
      Allen-Bradley 1756-OB16D
      Allen-Bradley 1756-OB16D
      Allen-Bradley 1756-OB16D
      Allen-Bradley 1756-OB16D

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      16-point diagnostic DC output module

      1756-OB16D

      Product Information:

      1756-OB16D is a 16-point diagnostic 24 V DC sourcing output module for ControlLogix systems. Match the D execution, RTB, load current and diagnostics.

      Product image is representative; revision or series may vary. Contact us to request a specific version.
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      • One-year warranty
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        • PRODUCT OVERVIEW

          What is this product?

          1756-OB16D is a 16-point diagnostic 24 V DC sourcing output module for ControlLogix systems. Match the D execution, RTB, load current and diagnostics.

          Source boundary

          Exact-model hardware values shown here are qualified from public technical cross-references and require order-stage confirmation.
        • APPLICATIONS

          Where it may be used

          Industry applications are tied to the documented function, receiving system and verified configuration.

          Oil Refineries

          Controls critical DC valves with channel diagnostic feedback.

          Chemical Plants

          Drives process solenoids while monitoring field-circuit conditions.

          Power Stations

          Operates DC auxiliaries with controller-visible output diagnostics.

          Water Treatment

          Controls valve banks and reports abnormal load circuits.
      Technical specifications for

      1756-OB16D

      0 TECHNICAL PARAMETERS
      • Manufacturer:
        Allen-Bradley
      • Product Category:
        PLC and Machine Control
      • Module Type:
        Diagnostic sourcing DC output
      • Output Points:
        16
      • Operating Voltage:
        19.2–30 V DC
      • Nominal Voltage:
        24 V DC
      • Diagnostic Functions:
        Open-wire / no-load channel diagnostics
      • Wiring Interface:
        Compatible removable terminal block
      • Stock Availability:
        2
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      • 06

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      BUYER INFORMATION

      Product condition level information

      Commercial details are confirmed in writing before payment.
      • 01

        Factory Sealed

        Unused product with the original factory seal intact; packaging age or storage marks may still be present.

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      • 02

        Original Pack

        Unused product in original manufacturer packaging that was not originally factory sealed.

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      • 03

        Factory New

        New and current product sourced through the manufacturer or authorized supply channel when expressly confirmed in the quotation.

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      Revisions

      Revision Part #

      Also known as

      1756-OB16D Ser A
      1756-OB16D/A, Series A, Rev A
      Get Parts Quote

      Alternative Names

      1756OB16D ControlLogix Diagnostic DC Output 1756 OB16D

      Information

      Overview Manuals Diagnostic Channels DC Load Limits RTB Wiring

      Features:

      • Allen-Bradley 1756-OB16D is a 16-point ControlLogix sourcing output module with channel diagnostic functions for 24 V DC circuits.
      • Match the D diagnostic execution, 19.2–30 V DC field supply, RTB, load current and controller configuration.
      • Rockwell Automation ControlLogix Digital I/O Modules User Manual supports the exact-model values listed on this page.

      Allen-Bradley 1756-OB16D is a 16-point ControlLogix sourcing output module with channel diagnostic functions for 24 V DC circuits. It controls DC field loads where open-wire or no-load diagnostic behavior is required.

      Match the D diagnostic execution, 19.2–30 V DC field supply, RTB, load current and controller configuration. Before removal, record the nameplate, installed position, wiring or cables and approved settings. After installation, verify power and diagnostics first, then test every affected signal, communication or control path before return to service.

      The Allen-Bradley 1756-OB16D 16-point diagnostic DC output module may still be available for purchase and support from Moore Automated Company beyond End-Of-Life (EOL) by the manufacturer (OEM).
      1756-OB16D documentation and reference links.Important Notice: Confirm the complete catalog number, receiving hardware, firmware or wiring configuration before replacement.

      Configure and validate each channel diagnostic against the actual connected load.

      Check field voltage, steady current, inrush and suppression before connection.

      Match the removable terminal block, group supply and field common arrangement.

      Technical notes

      1756-OB16D: Match the D diagnostic execution, 19.2–30 V DC field supply, RTB, load current and controller configuration. Record the installed wiring and configuration before removal, then verify power, diagnostics and every affected interface before return to service.

      Diagnostic Output

      1756-OB16D combines sixteen sourcing outputs with diagnostic monitoring. Diagnostic behavior depends on connected load characteristics and configuration, so test open-circuit and normal-load states without bypassing process interlocks.

      Field Power and RTB

      Use the documented 19.2–30 V DC supply range and verify the selected removable terminal block. Confirm group power, commons and suppression before enabling outputs, then compare module status with controller diagnostics.

      Customs & shipping dimensions / weight

      • Packed shipping dimensions
        Confirmed after final packing
        No verified exact-model packed dimensions are stated here; final packed dimensions are recorded after protective packing.
      • Packed shipping weight
        Confirmed after final packing
        Final gross shipping weight is recorded after protective packing and does not reuse an unverified product weight.
      • HS / customs code
        Confirmed by destination customs
        The destination customs declarant confirms the final tariff classification for the supplied item.
      • Country of origin
        Not officially confirmed
        Verify country of origin from the supplied unit marking or official shipment documents.
      • Ships from
        Xiamen, Fujian, China
        Dispatch location, quantity and handling time are confirmed in the written quotation.
      • Customs documents
        Confirmed for the destination
        Invoice, packing-list and origin-document requirements are agreed with the order.
      PRODUCT & ORDER FAQS

      Questions buyers ask about 1756-OB16D

      • How is the exact 1756-OB16D identity verified?

        Use the complete 1756-OB16D catalog marking and compare every suffix, hardware revision and receiving-system record.

      • Which receiving hardware must match 1756-OB16D?

        Match the D diagnostic execution, 19.2–30 V DC field supply, RTB, load current and controller configuration.

      • What documented function does 1756-OB16D provide?

        It controls DC field loads where open-wire or no-load diagnostic behavior is required.

      • Which technical values should be checked for 1756-OB16D?

        Check the product-specific parameters listed on this page against the official PDF and the supplied unit.

      • What should be recorded before replacing 1756-OB16D?

        Record installed wiring, slot or address, firmware, configuration and all affected signal or load assignments.

      • Can a nearby Allen-Bradley catalog number replace 1756-OB16D?

        Not from appearance or family name alone; the electrical interfaces, suffix execution and system compatibility must be confirmed.

      • How should 1756-OB16D be commissioned?

        Verify power and diagnostics first, then prove every connected signal, load or communication path in a safe state.

      • What is needed for a firm 1756-OB16D quotation?

        Provide quantity, nameplate photographs, receiving-equipment identity, required condition and delivery destination.
      All FAQ
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            Availability and lifecycle status for 1756-OB16D are confirmed for the exact article in the written quotation.

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          Moore Disclaimer: Moore Automated's sales automation equipment and related solutions are intended for industrial automation and business operational efficiency improvement purposes only. Product information, technical parameters, and application cases are for reference only and do not constitute an absolute guarantee of performance for any specific industry, scenario, or final application. Actual equipment performance may vary depending on factors such as the usage environment, system integration method, and maintenance conditions. Users should confirm compatibility and safety based on professional technical assessments. Moore Automated assumes no liability for any direct or indirect losses caused by improper use, modification, or failure to operate according to specifications, to the extent permitted by law.

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