Allen Bradley 1756-OB16E ControlLogix Fused Output Module

Product Introduction

The Allen-Bradley 1756-OB16E is a ControlLogix fused DC output module designed to provide reliable switching of 10–31 VDC field devices with integrated electronic protection. It offers sixteen sourcing output points, making it suitable for medium to high-density digital output applications in industrial automation systems.

This module combines high-performance DC switching with built-in electronic fuse protection per channel. It is engineered for applications where output fault isolation and system uptime are critical. When an overload or short circuit occurs, the affected channel is electronically protected without impacting other outputs, improving operational continuity.

The 1756-OB16E integrates seamlessly into the ControlLogix chassis and communicates directly with the backplane. It is widely used in manufacturing automation, process industries, packaging systems, and material handling equipment where dependable 24V DC control signals are required.

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Product Specifications

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Applications

• Control of 24V DC actuators, solenoids, relays, and pilot devices

• Industrial systems requiring channel-level electronic fuse protection

• Automated production lines with high-density digital output control

• Packaging, assembly, and material handling equipment

• Installations where fault isolation and reduced downtime are operational priorities

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Advantages

• Sixteen individually fused outputs improving system protection

• Integrated electronic overload and short-circuit protection

• Fast fault identification through individual channel LED diagnostics

• Compact design suitable for high-density ControlLogix racks

• Reliable DC switching performance in demanding industrial environments

• Minimizes system interruption by isolating faults to a single channel

FAQ

1. What voltage range does the 1756-OB16E support?
   The module supports 10–31 VDC output operation.

2. Are the outputs sourcing or sinking?
   The outputs are 24V DC sourcing type.

3. Does each channel have independent protection?
   Yes, each output point includes an integrated electronic fuse.

4. Can the module detect short circuits?
   Yes, electronic fuse protection responds to overload and short-circuit conditions.

5. Is configuration required in Studio 5000?
   Basic configuration is performed within the ControlLogix programming environment.

6. What type of terminal block is used?
   It requires a 36-pin removable terminal block.

7. Does a fault on one channel disable the entire module?
   No, protection is isolated to the affected channel.

8. Can it be used in redundant ControlLogix systems?
   Yes, it is compatible with redundant architectures.

9. Is the module suitable for inductive loads?
   Yes, but proper suppression components are recommended.

10. How are output states indicated?
    Each channel has an LED indicator showing output status and fault condition.

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