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ABB 3BSE041882R1 CI840A

1. Product Overview

The ABB 3BSE041882R1 CI840A is a PROFIBUS DP-V1 Fieldbus Communication Interface (FCI) module designed for the ABB S800 I/O system. It provides communication between S800 I/O modules and higher-level ABB control systems such as System 800xA and AC 800M controllers.

The CI840A handles I/O data communication, module supervision, configuration, diagnostics, and redundancy management, making it suitable for process automation systems requiring high availability.

2. Product Identification

3. Technical Parameters

4. Main Features

PROFIBUS DP-V1 Communication

• Provides reliable communication between S800 I/O stations and controllers.
• Supports cyclic process data exchange and acyclic parameter/diagnostic communication.

Redundant Operation Capability

• Designed for high-availability applications.
• Supports 1+1 redundant communication configurations.
• A redundant setup requires two CI840A modules together with a suitable termination unit such as TU846 or TU847.

Advanced I/O Management

The CI840A provides:

• I/O ModuleBus supervision
• Signal processing
• Configuration handling
• Diagnostic information collection
• Output State Preservation (OSP) handling
• HART pass-through support

Hot Configuration in Run

Allows configuration changes while the automation system remains operational, reducing downtime during maintenance or expansion.

5. Structural Composition

The CI840A module typically consists of:

• PROFIBUS DP-V1 communication interface
• Internal processing electronics
• ModuleBus communication interface
• 24 V DC power input circuitry
• Status indicators (LED diagnostics)
• Mounting and connection interface for S800 I/O architecture

It is installed together with ABB S800 I/O termination units to form a complete remote I/O communication station.

6. Application Fields

ABB CI840A is widely used in:

• Oil & Gas processing plants
• Power generation facilities
• Chemical and petrochemical industries
• Water treatment systems
• Manufacturing automation
• Distributed Control Systems (DCS)
• ABB System 800xA process control environments

Typical applications include:

• Remote analog and digital I/O stations
• Safety-critical process monitoring
• Redundant automation networks
• Large-scale industrial control systems

7. Advantages

• High communication reliability through PROFIBUS DP-V1
• Supports redundant architectures for improved availability
• Easy integration with ABB S800 I/O systems
• Supports online configuration and maintenance
• Provides comprehensive diagnostics for troubleshooting
• Suitable for long-life industrial automation installations

8. Conclusion

The ABB 3BSE041882R1 CI840A is a robust S800 I/O communication interface module designed for industrial process automation applications. With PROFIBUS DP-V1 communication, redundancy support, hot swap capability, and advanced diagnostic functions, it is an important component for ABB System 800xA and AC 800M-based control systems where reliability and continuous operation are critical.