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Allen-Bradley 1756-OB16I ControlLogix Digital Output Module, 16 Channels, Independent Isolation, 12/24VDC, Source/Sink Type, Rockwell Spare Parts

Allen Bradley 1756-OB16I D/O Module

The Allen Bradley 1756-OB16I is a 16-point isolated DC digital output module for the ControlLogix platform. Its core function is to convert control signals from the controller into high-current DC outputs to drive actuators, valves, indicators, and other field devices, with each channel individually isolated for enhanced system reliability.

  • Item No :

    1756-OB16I

  • Order(MOQ) :

    1

  • Payment :

    EXW

  • Product Origin :

    USA

  • Shipping Port :

    Wuhan, Hubei, China

  • Lead Time :

    3-5 days

  • Weight :

    0.5kg

  • Product Overview: 1756-OB16I ControlLogix 16 Point D/O Module

    The Allen‑Bradley 1756‑OB16I is a 16‑point digital output module for the ControlLogix chassis with individually isolated outputs. It operates at 10‑30V DC sourcing current and includes diagnostic features such as open‑wire detection and load fault protection for each output point.

     

    Brand Name: Allen Bradley

    Product Name: 1756-OB16I

    Place of Origin: USA

    Range of Product: ControlLogix

    Warranty: 1Year

     

    Our Service

    Key Parameters 

     
     
    Item Specifications / Features
    Number of Channels 16 individually isolated digital outputs 
    Output Type Transistor, sink/source configurable 
    Voltage Category 12/24V DC (operating range: 10-30V DC) 
    Current per Point 2A @ 30°C / 1A @ 60°C (linear derating) 
    Current per Module 8A @ 30°C / 4A @ 60°C 
    System Platform Allen-Bradley ControlLogix 1756 chassis 
    Output Delay (OFF→ON) 1 ms maximum 
    Output Delay (ON→OFF) 2 ms maximum 
    Isolation Voltage 250V continuous between outputs 
    Recommended RTB 1756-TBCH or 1756-TBS6H (36-pin) 
    Diagnostics Per-point fault status; configurable fault/program state (Hold Last State, On, Off) 
    Certifications ATEX, CE, IECEx, UL, CSA, RCM, ABS, EAC 

    Core Features & Advantages

    • Individual Channel Isolation: The module's standout feature is the per-point isolation, which means each of the 16 outputs can be configured with its own voltage source. This protects the module and controller from shorts and faults in the field wiring, significantly improving system reliability .

    • High Current Capacity and Fast Switching: The module can handle up to 2A per point, making it capable of driving high-power loads directly. It also features fast output response times with a maximum OFF→ON delay of 1 ms and ON→OFF delay of 2 ms, suitable for high-speed control applications .

    • Flexible Configuration and Diagnostics: The module supports configurable safe state positions (Hold Last State, On, or Off) for each point in case of a controller fault or Program mode, which is critical for fail-safe system design . Built-in diagnostics provide per-point fault status via the backplane, simplifying maintenance and troubleshooting .

    Typical Applications

    The 1756-OB16I is widely used in industrial automation for driving digital outputs in ControlLogix systems, such as:

     

    • Machine Control: Activating solenoids, contactors, and pilot lights in packaging, material handling, and assembly equipment.

    • Process Automation: Controlling valves, pumps, and alarms in discrete manufacturing and process control applications.

    • High-Reliability Systems: Applications requiring individual output isolation to protect against field wiring faults and ensure high availability.

    Recommended Products & Accessories

     
     
    Product/Model Type Brief Description
    1756-TBCH Required Accessory 36-pin screw clamp removable terminal block (RTB) for wiring field devices to the module 
    1756-TBS6H Required Accessory 36-pin spring clamp RTB for vibration-resistant wiring 
    1756-JMPR Optional Accessory Jumper bar for daisy-chaining power connections across multiple RTBs 

    Related & Alternative Modules

     
     
    Product/Model Type Brief Description
    1756-OB16 Alternative (Non-Isolated) 16-point output module with similar functionality but without individual channel isolation; lower cost for non-critical applications
    1756-OB32 Alternative (Higher Density) 32-point output module for applications requiring more points in a single slot; lacks per-channel isolation
    1756-OB8I Alternative (Lower Channel) 8-point isolated output module for applications requiring fewer isolated outputs
    1756-OB16D Alternative (Diagnostic) 16-point output module with enhanced diagnostics including open-wire detection
    1756-OB16E Alternative (Electronic Fusing) 16-point output module with electronic fusing and diagnostic capabilities
    1756-OB16IEF Alternative (Enhanced) 16-point isolated output with electronic fusing and enhanced diagnostics
    1756-OB16IS Alternative (Enhanced) 16-point isolated output with enhanced diagnostics and short-circuit protection

    Recommended System Components

     

     
     
    Product/Model Type Brief Description
    1756-A7 / A13 Chassis 7-slot or 13-slot ControlLogix chassis for mounting the module 
    1756-PA72 / PA75 Power Supply ControlLogix power supply modules providing backplane power
    Studio 5000 Software Programming and configuration software for ControlLogix controllers
    1756-CP3 Cable Serial programming cable for initial controller setup
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Allen-Bradley 1756-OB16I Isolated Output Module

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1756-OB16I Rockwell Spare Parts

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Subject : Allen Bradley 1756-OB16I D/O Module

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