Overview
The Allen-Bradley 1756-OB32 is a ControlLogix 32-point digital output module designed for industrial automation and motion control applications. It provides two separate groups of 16 outputs with a voltage range of 12 to 24V DC. The module’s 32 outputs can be configured in two groups of 16. This modular I/O solution is engineered for drop-in integration into ControlLogix chassis and systems requiring reliable multi-channel discrete output control.
Key Features
- 32 output channels segmented into two groups of 16 for efficient configuration
- Operating voltage range of 10-31.2V DC
- Maximum current rating of 0.5A per point at 50°C, derating to 0.35A at 60°C
- Minimum load current requirement of 3 mA per point
- 36-pin backplane connector for ControlLogix chassis mounting
- Output delay times of 1 ms maximum for on/off switching
Technical Specifications
Key performance parameters verified from distributor and manufacturer documentation:
Typical Applications
The 1756-OB32 is suitable for discrete output control in manufacturing, process automation, machine control, and material handling systems. Common applications include solenoid valve control, relay switching, indicator lamp control, and fan/pump enable/disable logic. It integrates seamlessly into ControlLogix architectures supporting single or networked controller deployments requiring multi-point DC output capability.
Compatibility & Replacements
Compatible With
- ControlLogix 1756 chassis and backplane
- ControlLogix programmable controllers (1756-L series)
- Studio 5000 Logix Designer programming software
- EtherNet/IP communication protocol
- CompactLogix and ControlLogix integration networks
Replaces / Drop-In Replacement For
Verify compatibility with your system integrator before ordering. The 1756-OB32 is the primary SKU for this module; variant 1756-OB32K offers identical output specifications in alternative packaging. Always confirm series and revision match your application requirements.
Works With
- Rockwell Automation Studio 5000 Logix Designer
- EDS (Electronic Data Sheet) profiles for 1756 Discrete I/O
- Allen-Bradley Add-On Profiles (AOP) for ControlLogix I/O
- EtherNet/IP networks and PROFINET-compatible systems
- RSLogix 5000 legacy programming environments
