Allen-Bradley 1756-OB16E ControlLogix 10-31V DC 16-Ch Fused Output Module

The Allen‑Bradley 1756‑OB16E is a 16‑point digital DC output module for the ControlLogix platform, designed to actuate 24V DC devices such as relay coils, solenoid actuators, pilot lamps, and alarms. It features two electronically fused groups of eight outputs each, providing short‑circuit and overcurrent protection without requiring physical fuse replacement. With a 10‑31.2V DC operating range and 1A per point output capacity, this module is widely used in manufacturing, process control, and material handling applications.

  • Item No :

    1756-OB16E
  • Order(MOQ) :

    1
  • Payment :

    EXW
  • Product Origin :

    USA
  • Shipping Port :

    Wuhan
  • Lead Time :

    3-5days
  • Weight :

    1KG
  • Product Details

    General Information

     
     
    Attribute Specification
    Manufacturer Allen‑Bradley / Rockwell Automation
    Product Type ControlLogix Digital DC Output Module
    Part Number 1756‑OB16E
    Number of Outputs 16 channels (sourcing)
    Output Groups 2 groups of 8 outputs, electronically fused
    Slot Width 1
    Compatible Chassis All 1756 ControlLogix chassis (A4, A10, A13, A17) 

    Electrical Specifications

     
     
    Parameter Specification
    Output Voltage Range 10 – 31.2V DC (24V nominal) 
    Output Current per Point 1A max @ 60°C 
    Output Current per Module 8A max @ 60°C 
    Surge Current 2A for 10ms per point 
    Minimum Load Current 3mA per channel 
    OFF‑state Leakage Current ≤1mA per point 
    ON‑state Voltage Drop ≤400mV @ 1A 

    Switching Performance

     
     
    Parameter Specification
    OFF‑to‑ON Delay 70µs typical / 1ms max 
    ON‑to‑OFF Delay 360µs typical / 1ms max 

    Power & Physical

     
     
    Parameter Specification
    Backplane Current (5.1V) 250mA 
    Backplane Current (24V) 2mA 
    Power Dissipation 4.1W max @ 60°C 
    Thermal Dissipation 13.98 BTU/hr @ 60°C 
    Weight Approx. 0.26 – 0.45 kg (0.56 – 0.99 lb) 
    Isolation Voltage 250V continuous between groups 

    Removable Terminal Blocks

     
     
    Compatible RTB Description
    1756‑TBNH Standard terminal block with cage‑clamp (screw)
    1756‑TBSH Spring‑clamp terminal block 

    Recommended Alternative Models

     
     
    Model Number Description Key Differences
    1756‑OB16D 16‑point DC output module Similar output capacity but without electronic fusing; older variant 
    1756‑OB32 32‑point DC output module Higher density (32 outputs), but without electronic fusing per channel 
    1756‑OB8E 8‑point DC output module Lower channel count (8 outputs), electronically fused 
    1756‑OW16I 16‑point relay output module Isolated relay outputs for AC/DC switching; much slower response and higher current capability per point; not fused 

    FAQS

    1: What does the "E" in 1756‑OB16E stand for?

    A: The "E" denotes electronic fusing. Each of the two output groups has built‑in electronic overcurrent and short‑circuit protection that resets automatically once the fault condition is cleared, eliminating the need to replace physical fuses.

    2: What is the maximum output current per point and per module?

    A: Each output point can handle 1A continuously at 60°C, and the total module current is limited to 8A at the same temperature. Surge currents up to 2A for 10ms are permitted per point.

    3: Can I mix different output voltages on this module?

    A: No. All outputs share the same power supply bus. The entire module must operate within the 10‑31.2V DC range from a single power source.

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