Overview
The Allen-Bradley 1755-IB24XOB16 is a combination digital I/O module from the Bulletin 1755 product series. It features 24 inputs and 16 outputs, making it a versatile solution for applications requiring simultaneous monitoring and control of discrete signals. The module is part of the Bulletin 1755 product series and is designed as a component of the GuardPLC 2000 system, a proven platform for safety-critical industrial control.
Key Features
- 24 digital inputs and 16 digital outputs
- Nominal input voltage rating of 24 Volts DC
- Compatible with GuardPLC 2000 safety controllers
- Designed for modular, scalable system architecture
- Supports functional safety-rated applications
- Drop-in compatibility with existing GuardPLC 2000 systems
Technical Specifications
The module operates at a nominal voltage of 24V DC, consistent with GuardPLC 2000 system requirements. Its discrete input/output architecture allows straightforward integration into safety control systems without complex signal conditioning. The I/O count—24 inputs and 16 outputs—accommodates most mid-scale automation applications.
Typical Applications
- Safety-critical machine control systems
- Emergency stop and protective device monitoring
- Interlocking and fault detection circuits
- Discrete process control requiring functional safety certification
- Industrial machinery with safety-rated I/O requirements
- Material handling and packaging equipment
Compatibility & Replacements
Compatible With
- GuardPLC 2000 safety controllers
- Allen-Bradley Bulletin 1755 product family
- 24V DC power supplies
- Discrete signal sensors and actuators
- Safety-rated I/O circuits compliant with IEC 61508 and IEC 62061
Replaces / Drop-In Replacement For
Verify specific replacement compatibility with your GuardPLC 2000 system configuration and engineering documentation before ordering. Other discrete I/O modules in the Bulletin 1755 family (such as 1755-IB16, 1755-OB16, or 1755-IF8) may serve similar roles depending on your application requirements.
Works With
- GuardPLC 2000 safety processor modules (1755-L series)
- Bulletin 1755 power supplies and chassis
- Safety function block libraries for functional safety implementation
- IEC 61131-3 compliant programming environments
- Discrete wiring terminals and signal conditioning
















