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ABB 3BSE022366R1 CI801

ABB CI801 (3BSE022366R1) is a PROFIBUS FCI (Fieldbus Communication Interface) module belonging to the ABB S800 I/O family. It is used as a communication interface between ABB control systems (such as AC 800M / 800xA systems) and S800 distributed I/O modules via the PROFIBUS DP-V1 network.

1. Product Identification

2. Main Function

The CI801 acts as the communication gateway for an S800 I/O station. Its main tasks include:

• Communication between controller and remote I/O modules through PROFIBUS DP-V1
• Processing and transferring I/O signals
• Managing S800 I/O ModuleBus communication
• Providing diagnostics and supervision information
• Handling output state management during communication faults (OSP handling)
• Supporting HART pass-through communication
• Supporting configuration changes during operation (Hot Configuration InRun)

3. Technical Specifications

4. Structural Composition

The CI801 module typically consists of:

• CPU/communication processing unit
  • Handles PROFIBUS communication and I/O data exchange
• PROFIBUS DP-V1 interface
  • Provides connection to the control network
• ModuleBus interface
  • Communicates with S800 I/O modules
• 24 V DC power input
  • Supplies the interface electronics and connected I/O modules
• Status LED indicators
  • Used for power, communication, fault and maintenance diagnostics
• Terminal/connector interfaces
  • PROFIBUS connector
  • Power connector
  • ModuleBus termination connection

5. Key Features

Reliable Distributed I/O Communication

The CI801 enables decentralized field signal acquisition and control by connecting S800 I/O modules to higher-level ABB control platforms.

PROFIBUS DP-V1 Compatibility

Supports industrial fieldbus communication for deterministic process automation applications.

Diagnostic Capability

Provides module supervision and status information to simplify troubleshooting and maintenance.

HART Pass-through

Allows access to HART-enabled field devices through the automation system.

Flexible Configuration

Supports online configuration features for improved system availability.

6. Application Fields

ABB CI801 modules are commonly used in:

• Oil & gas processing plants
• Power generation facilities
• Chemical and petrochemical industries
• Water and wastewater treatment
• Manufacturing automation
• ABB 800xA Distributed Control System (DCS)
• ABB Freelance automation systems

Typical applications include:

• Analog signal acquisition
• Digital input/output control
• Motor and valve control systems
• Process monitoring
• Remote field instrumentation integration

7. Compatibility Notes

The CI801 is designed for ABB S800 I/O architectures. The standard system software version loaded in some CI801 units may not support certain I/O modules, including:

• DI825
• DI830
• DI831
• DI885
• AI880
• DI880
• DO880

8. Summary

The ABB CI801 3BSE022366R1 is a compact and reliable PROFIBUS DP-V1 communication interface for S800 I/O systems. It provides the essential link between ABB controllers and distributed field I/O, offering robust communication, diagnostics, HART support, and flexible configuration for industrial process automation environments.