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ABB 3BSE025255R1 CI820V1 S800

ABB 3BSE025255R1 CI820V1 is an S800 I/O Redundant Field Communication Interface (FCI) module used in ABB industrial automation systems, particularly with ABB System 800xA / Advant OCS / AC 800M controller environments. It provides redundant communication between controllers and S800 I/O stations via the Advant Fieldbus 100 (AF100) network.

1. Product Identification

• Manufacturer: ABB
• Order Number: 3BSE025255R1
• Type Designation: CI820V1
• Product Type: Communication Interface Module
• Description: CI820V1 S800 Redundant FCI
• System Family: ABB S800 I/O / System 800xA

2. Main Function

The CI820V1 acts as a Field Communication Interface connecting an ABB controller system to S800 I/O modules. It supports redundant communication architectures to improve system availability in critical process applications.

Typical functions include:

• Communication interface between controller and remote S800 I/O racks
• Redundant fieldbus communication support
• Distributed I/O data exchange
• Improved system availability through communication redundancy
• Integration with ABB Advant Fieldbus 100 networks

3. Technical Specifications

4. Redundancy Configuration

For redundant operation:

• Two CI820V1 modules are required
• Additional accessory A070 must also be ordered
• The pair provides redundant communication paths for higher system reliability

This configuration is commonly used in industries where communication failure can cause production interruption, such as:

• Power generation
• Oil & gas
• Chemical processing
• Water treatment
• Continuous manufacturing plants

5. System Compatibility

The CI820V1 is designed for use with:

• ABB System 800xA control systems
• ABB Advant OCS systems
• ABB S800 I/O remote I/O platforms
• ABB AC 800M controller environments

The S800 I/O platform is a modular distributed I/O system designed for connection to ABB and third-party process controllers using industrial fieldbus technologies.

6. Structural Composition

The module generally consists of:

• Communication processor section
• AF100 interface circuitry
• Memory components (FPROM/SRAM)
• Status indication LEDs
• Power supply interface
• Fieldbus connectors
• S800 mounting interface

7. Typical Applications

Process industries

• Distributed control systems (DCS)
• Remote I/O cabinets
• High availability control networks

Industrial plants

• Turbine and generator control
• Refinery automation
• Chemical production lines
• Large-scale manufacturing systems

8. Replacement / Related Information

• Supersedes: 3BSE013200R1
• Product category: ABB Communication Module / S800 I/O Interface

Conclusion

The ABB CI820V1 (3BSE025255R1) is a reliable redundant communication interface for ABB S800 I/O systems. Its AF100 communication capability and redundant design make it suitable for high-availability automation systems where continuous operation and fault tolerance are essential.