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Allen-Bradley 1746-OB16
Allen-Bradley 1746-OB16
Allen-Bradley 1746-OB16
Allen-Bradley 1746-OB16
Allen-Bradley 1746-OB16
Allen-Bradley 1746-OB16
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DC Output Module

1746-OB16

Spare Part Number

PN1746OB16

Product Information:

The 1746-OB16 is a 16-channel digital DC output module manufactured by Allen-Bradley (Rockwell Automation). It belongs to the traditional SLC 500 PLC platform and is designed for switching medium- to high-density solid-state DC loads.

The 1746-OB16 is designed to manage 16 outputs while maintaining high operating efficiency. The module is voltage-classified as 24V DC and is dedicated to signal output.

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

1746-OB16

0 TECHNICAL PARAMETERS
  • Manufacturer:
    Allen-Bradley
  • Product Category:
    PLC and Machine Control
  • Spare Part Number:
    1746OB16
  • Estimated shipping dimensions:
    24.5x16.5x5.5cm
  • Weight:
    0.4 kg
  • Tariff Code:
    8537101190
  • Country of origin:
    USA
  • Place of shipment:
    Xiamen, Fujian, China
  • Voltage category:
    24V DC Signal Output
  • Number of outputs:
    16 outputs
  • Points per common:
    16 points
  • Voltage, operating (V DC):
    10...50 (source)
  • Backplane current consumption 5V DC:
    0.280 A
  • Backplane current consumption 24V DC:
    0.0 A
  • Signal delay, max resistive load:
    On = 0.1 ms Off = 1.0 ms
  • Off-state leakage, max:
    1 mA
  • Continuous current per point:
    0.50 A @ 30 °C (86 °F) 0.25 A @ 60 °C (140 °F)
  • Continuous current per module, max:
    8.0 A @ 30 °C (86 °F) 4.0 A @ 60 °C (140 °F)
  • On-state voltage drop, max:
    1.2V @ 0.50 A
  • Surge current per point:
    3.0 A for 10 ms
  • Product Type:
    Output Module
  • Product Line:
    SLC 500
  • Series:
    Allen-Bradley SLC 500
  • Stock Availability:
    10
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Revisions

Revision Part #

Also known as

1746-OB16/A
1746-OB16 Ser A, Series A, Rev A
1746-OB16/B
1746-OB16 Ser B, Series B, Rev B
1746-OB16/C
1746-OB16 Ser C, Series C, Rev C
1746-OB16/D
1746-OB16 Ser D, Series D, Rev D

Alternative Names

1746OB16 1746 OB16 I746-OBI6 1746-0B16 1746-O816 17A6-OB16 1746-OB8 1746-OB16E 1746-OA16 1746-OB6EI 1746-OBP8 1746-OBP16 1746-OX8

Information

Overview Manuals Smart Thermal Electronic Fusing More Info

Features:

  • 10 to 50 V DC (Nominal operation is typically 24V DC)
  • Consumes 280 mA @ 5V DC and 0 mA @ 24V DC from the local SLC chassis
  • Features an execution ON delay of 0.1 ms and an OFF delay of 1.0 ms under maximum resistive loads
The 1746-OB16 output module is part of the Allen Bradley SLC 500 series, performing exceptionally well in automation control systems. This module features 16 outputs in a grouped design, offering simple and efficient functionality. Rated at 24V DC, it meets various signal output requirements. Operating from 10V to 50V DC, it can be flexibly applied to diverse application scenarios.

At 5V DC operating voltage, the backplane current consumption is 0.28 amps; at 24V DC operating voltage, there is no current consumption. Regarding response time, under maximum resistive load conditions, the signal delay is 0.1 milliseconds upon startup and 1 millisecond upon shutdown. The maximum shutdown leakage current is 1 mA, and the minimum load current of the module is also 1 mA. Furthermore, at a current of 0.5 amps, the maximum voltage drop in the on-state is limited to 1.2 volts.

The 1746-OB16 Allen Bradley DC Output Module may still be available for purchase and support from Moore Automated Company beyond End-Of-Life (EOL) by the manufacturer (OEM).
Allen Bradley 1746-OB16 DC Output Module Manuals(Datasheets), Link Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
The core highlight of the 1746-OB16 is its built-in electronic overload and short-circuit protection, which operates based on the thermal fuse principle.
If a short circuit occurs in an output channel, the module will isolate and limit the current on that specific path once the local temperature exceeds a threshold.
Nearby normal channels will continue to operate normally, completely unaffected. The E-Fuse diagnostic LED on the front panel will illuminate in the event of a short circuit. The module supports automatic reset after overheating and overload dissipation.
This module has a rated surge capacity of 3 amps per output for 10 milliseconds, enabling it to handle transient conditions. For ease of installation, the module is equipped with removable terminals for convenient connection and maintenance. In summary, the 1746-OB16 output module combines reliable performance with essential functionality, ensuring stable operation in a variety of automated environments.

Technical notes

The 1746-OB16 is a 16-point digital DC output module for the Allen-Bradley SLC 500 series programmable logic controllers (PLCs). This module uses a sourcing output architecture, supports a wide operating voltage range of 10 to 50V DC (typically 24V DC), and draws 280 mA at 5V DC on the backplane. It has 16 physical output channels (sharing a common terminal), a maximum single-point output current of 1.0 A (maximum total module current up to 8.0 A), and a maximum on-state voltage drop of 1.2V DC at a full load of 1.0 A.
PRODUCT & ORDER FAQS

Questions buyers ask about 1746-OB16

  • How does the Allen-Bradley 1746-OB16 leverage its 16-channel DC output architecture to achieve deterministic field device actuation in SLC 500 automation systems?

    The 1746-OB16 is designed to provide reliable discrete output control for industrial applications, enabling efficient switching of field devices such as solenoid valves, relays, indicators, and contactors.
  • Why is the Allen-Bradley 1746-OB16 widely used in the SLC 500 platform, which requires 16-point 24VDC output and high operational reliability?

    The 1746-OB16 combines compact I/O density with reliable output performance, making it suitable for a variety of industrial automation tasks.
  • What are the advantages of the Allen-Bradley 1746-OB16's high-density 16-point output configuration and transistor-based switching topology?

    The 1746-OB16 supports efficient panel space utilization while providing fast and reliable DC output switching performance.
  • Why is the Allen-Bradley 1746-OB16 particularly suitable for machine automation systems requiring fast response times and high-frequency discrete output control?

    The 1746-OB16 utilizes solid-state output technology, enabling rapid switching and reliable drive of connected devices.
  • How does the Allen-Bradley 1746-OB16 ensure operational stability in industrial environments susceptible to electrical noise, transient interference, and electromagnetic interference?

    The 1746-OB16 employs an industrial-grade circuit design intended to maintain reliable output operation even under harsh electrical conditions.
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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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