Allen Bradley 1746-OBP16 Digital DC Output Module

Product Introduction

The Allen-Bradley 1746-OBP16 is a digital DC output module specifically designed for the SLC 500 programmable controller platform. It provides reliable control of DC-powered field devices with precise switching capabilities in industrial automation systems.

This module features 16 independent output channels, delivering 6.4 A total with individual point capability of 250 mA, suitable for low-power DC and AC-controlled devices. It supports 20.4–26.4 VAC input for operation in applications requiring pulsed or controlled AC-powered DC outputs. The 1746-OBP16 is optimized for efficient control of solenoids, indicators, relays, and other field devices requiring low-current DC actuation.

Engineered for industrial control cabinets, the OBP16 combines high output density with solid-state reliability, providing predictable switching, electrical isolation, and seamless integration with SLC 500 processors. This module is ideal for applications that demand precise control, minimal electrical noise, and compact installation.

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Product Specifications

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Applications

• Low-power DC device control, including solenoids, indicators, and relays

• Industrial machine automation, enabling precise switching for multiple outputs

• Packaging and assembly machinery, controlling repetitive low-current actuators

• Process control systems, providing reliable low-power DC output for monitoring or auxiliary equipment

• Legacy SLC 500 installations, expanding output capacity without redesigning the control system

• Compact control panels, offering high point density for space-limited applications

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Advantages

• High point density, with 16 outputs in a single module

• Low-current output capability, supporting precise control of small devices

• Solid-state switching, reducing maintenance and increasing reliability

• Electrical isolation, protecting the controller from load-side disturbances

• Wide AC input range, allowing operation in various low-voltage AC environments

• Seamless SLC 500 integration, enabling straightforward configuration and replacement

• Compact and reliable, ideal for industrial control cabinets with space constraints

FAQ

1. What is the total current capacity of the 1746-OBP16 module?
   The module supports a total output current of 6.4 A across all 16 channels.

2. What is the maximum current per output point?
   Each output point can deliver up to 250 mA.

3. What voltage range does the module operate on?
   It operates on an AC input voltage range of 20.4–26.4 VAC.

4. Can outputs be controlled individually?
   Yes, each of the 16 outputs can be individually controlled by the SLC 500 processor.

5. What types of loads are suitable for this module?
   It is suitable for low-power DC devices such as solenoids, indicator lamps, and relays.

6. Does the module provide electrical isolation?
   Yes, output-to-backplane isolation is provided to protect the SLC 500 controller.

7. Is the module suitable for continuous operation?
   Yes, it is designed for continuous industrial operation.

8. How is the module powered within the system?
   It receives logic power from the SLC 500 backplane, while output current is sourced from the specified AC input.

9. Does the module require external signal conditioning?
   No external conditioning is required for supported low-power DC outputs.

10. Can this module be used as a replacement for other OB16 modules?
    It can replace other OB16 modules in systems requiring low-current DC outputs, but verify voltage and current specifications for compatibility.

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