Allen Bradley 1756-OB32 ControlLogix DC Output Module

Product Introduction

The Allen-Bradley 1756-OB32 is a high-density ControlLogix DC output module designed to deliver reliable 12–24 VDC digital switching in demanding industrial automation systems. With thirty-two sourcing output channels in a single slot, this module is ideal for applications requiring large numbers of discrete outputs while maintaining compact panel design.

Engineered for integration within the ControlLogix platform, the 1756-OB32 communicates directly over the backplane and allows centralized control through Studio 5000. Its solid-state output design ensures fast switching performance and long operational stability when driving field devices such as relays, solenoids, contactors, and indicator lights.

The module supports a wide operating voltage range of 10–31.2 VDC, making it suitable for standard 24V DC industrial control systems. It is commonly deployed in manufacturing lines, material handling systems, packaging machinery, and process automation installations where high output density and stable switching performance are required.

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Product Specifications

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Applications

• High-density 24V DC output control in automated production environments

• Control of relays, solenoids, and contactor coils in machine automation

• Integration within material handling and conveyor systems

• Packaging, assembly, and robotic control applications

• Installations requiring compact design with large output capacity

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Advantages

• Thirty-two outputs in a single slot, maximizing chassis space efficiency

• Wide 10–31.2 VDC operating range for flexible system compatibility

• Solid-state design for fast and reliable switching performance

• Clear LED status indicators per channel for simplified troubleshooting

• Seamless integration into ControlLogix distributed control architectures

• Suitable for large-scale automation systems requiring high output density

FAQ

1. What voltage range does the 1756-OB32 support?
   It operates within a 10–31.2 VDC range, with a nominal rating of 12–24 VDC.

2. Are the outputs sourcing or sinking?
   The module provides 24V DC sourcing outputs.

3. How many output channels are available?
   The module provides 32 digital output points.

4. Can each channel be monitored individually?
   Yes, each output includes an LED status indicator.

5. Is the module suitable for inductive loads?
   Yes, but proper suppression devices are recommended for inductive equipment.

6. Does it include electronic fuse protection per channel?
   No, this model does not provide individual electronic fuse protection.

7. What type of terminal block is required?
   It uses a 36-pin removable terminal block.

8. Is it compatible with redundant ControlLogix systems?
   Yes, it can operate within redundant ControlLogix architectures.

9. Can output configuration be adjusted in Studio 5000?
   Yes, output behavior and parameters are configurable through the programming environment.

10. Does a fault on one channel affect all outputs?
    Channel faults are typically isolated within output groups, depending on wiring configuration.

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