ABB CI801 3BSE022366R1 S800 I/O PROFIBUS DP-V1 Fieldbus Communication Interface Module

In addition to fieldbus communication, the CI801 performs several important S800 I/O functions, including I/O ModuleBus supervision, I/O module configuration, Output Set as Predetermined (OSP) handling, isolated power supply to I/O modules, Hot Configuration In Run, and HART pass-through.

Product Identification

• Manufacturer: ABB
• Product Type: Fieldbus Communication Interface
• Type Designation: CI801
• Article Number: 3BSE022366R1
• Product Family: ABB S800 I/O
• Communication Protocol: PROFIBUS DP-V1
• Device Role: PROFIBUS Slave
• Line Redundancy: No
• Module Redundancy: No
• Hot Swap: No
• HART Pass-Through: Yes

ABB CI801 Overview

The ABB CI801 serves as the communication and interface unit for an S800 I/O station using PROFIBUS DP-V1. It connects the distributed I/O system with a supervisory controller or PLC through the fieldbus network.

The S800 I/O platform is a modular and distributed process I/O system intended for connection with parent controllers and PLCs through industry-standard fieldbus technologies. CI801 provides the PROFIBUS-based communication interface within this architecture.

Because the CI801 combines communication, I/O supervision, configuration, and power-related functions, it plays a central role within an S800 I/O station.

PROFIBUS DP-V1 Communication

The primary communication protocol of the ABB CI801 is PROFIBUS DP-V1. ABB identifies CI801 as a PROFIBUS DP-V1 fieldbus communication interface and classifies it as a slave device.

The PROFIBUS interface allows the S800 I/O station to exchange process and diagnostic information with the associated controller. The CI801 acts as the communication endpoint for the I/O station rather than functioning as the PROFIBUS master.

This architecture allows distributed S800 I/O modules to be positioned close to field devices while maintaining communication with the central automation controller.

S800 I/O Communication Interface

The ABB S800 I/O family is designed as a distributed and modular process I/O platform. It supports different communication arrangements and can be integrated with controllers from ABB and other manufacturers.

Within this system, CI801 provides the PROFIBUS communication path. The module also manages the local I/O ModuleBus and supervises the connected I/O modules.

This combination of fieldbus communication and local I/O management makes CI801 an important component of a distributed S800 I/O station.

I/O ModuleBus Supervision

The CI801 performs supervisory functions for the I/O ModuleBus. ModuleBus provides the internal communication structure used by the S800 I/O modules.

The communication interface therefore does more than simply transfer information over PROFIBUS. It also manages and supervises the local I/O module architecture.

This allows the controller to communicate with the individual I/O modules through the CI801 and the S800 I/O ModuleBus structure.

I/O Module Configuration

Another function of the ABB CI801 is configuration of the connected I/O modules. The FCI manages the configuration information required for the S800 I/O station.

This configuration function enables the connected I/O modules to operate as part of the overall automation system according to the engineered I/O structure.

Correct configuration is important because different S800 I/O modules have different signal types, channel counts, electrical characteristics, and application functions.

Hot Configuration In Run

ABB identifies Hot Configuration In Run as one of the features of CI801. This function is associated with configuration changes within an operating S800 I/O architecture.

The capability can be important in process automation environments where configuration activities may need to be performed without taking the entire control system out of operation.

The exact limitations and permitted configuration operations depend on the overall controller, I/O configuration, and applicable ABB engineering procedures.

HART Pass-Through

The CI801 supports HART pass-through. This function allows HART communication information associated with compatible HART-enabled I/O modules to pass through the S800 I/O communication architecture.

HART pass-through can be useful in process automation installations where analog field instruments provide both process measurement and digital HART communication.

The actual HART functionality depends on the connected I/O modules and the configuration of the automation system.

Output Set as Predetermined Handling

CI801 provides OSP handling. Output Set as Predetermined is associated with the behavior of output channels when communication or system conditions require the outputs to transition to predefined states.

This function is relevant to process safety and equipment behavior because output devices may need to adopt predefined states under particular communication or fault conditions.

The actual OSP behavior depends on the configuration of the connected output modules and the automation application.

Isolated I/O Power Supply

The ABB CI801 provides an isolated power supply to the I/O modules. ABB lists isolated I/O module power as one of the primary CI801 features.

This function separates the power supplied to the I/O module side from the incoming control-system power arrangement and forms part of the CI801’s interface architecture.

The input power is also fused, providing a dedicated protection element for the CI801 power supply circuit.

24V DC Power Consumption

ABB’s current CI801 data sheet specifies typical 24V power consumption of approximately 140 mA.

The power requirement should be considered when designing the 24V DC supply for an S800 I/O station.

The complete power budget should include the CI801 together with all connected I/O modules and associated system components.

Technical Specifications

Dimensions and Mechanical Design

The ABB CI801 has a width of approximately 85.8 mm, a height of 136 mm including the latch, and a depth of approximately 58.5 mm. The specified weight is approximately 0.3 kg.

The module is designed for integration into the modular S800 I/O system and can be installed as part of a DIN-rail-based automation cabinet or distributed I/O arrangement.

Environmental Specifications

ABB specifies an operating temperature range of 0 to +55 °C, with approvals issued for 5 to 55 °C. The storage temperature range is -40 to +70 °C.

The maximum ambient temperature is specified as 55 °C, with a lower maximum ambient temperature of 40 °C for vertical mounting. The module has an IP20 protection class and is specified for pollution degree 2.

ABB also lists corrosion protection according to ISA-S71.04 G3 and relative humidity of 5 to 95 percent, non-condensing.

Safety and Certification

The ABB CI801 has CE marking and is associated with electrical safety standards including EN 61010-1, UL 61010-1, EN 61010-2-201, and UL 61010-2-201.

The module is also listed with hazardous-location certifications including C1 Div 2 cULus, C1 Zone 2 cULus, and ATEX Zone 2. Marine certifications include ABS, BV, DNV-GL, and LR.

System 800xA Integration

CI801 belongs to the communication interface range used with ABB S800 I/O and System 800xA-related automation architectures. The S800 I/O system is designed to communicate with parent controllers through industry-standard fieldbus technology.

When integrated into an S800 I/O station, CI801 provides the fieldbus connection to the controller while managing the local I/O ModuleBus and associated I/O configuration.

This makes CI801 suitable for distributed I/O installations where field devices can be located close to the process while the controller remains in a centralized control location.

PROFIBUS Slave Architecture

ABB identifies CI801 as a PROFIBUS DP-V1 slave. It does not provide line redundancy or module redundancy.

This differentiates CI801 from other S800 communication interfaces such as CI840A, which provides PROFIBUS DP-V1 communication with redundancy capabilities.

Therefore, the communication interface should be selected according to the required network architecture and redundancy requirements.

Industrial Automation Applications

The ABB CI801 can be used in industrial automation systems where distributed S800 I/O modules need to communicate with a controller through PROFIBUS DP-V1.

Typical application environments include process automation systems, industrial production facilities, control cabinets, distributed I/O stations, and System 800xA installations.

The module is particularly useful where the S800 I/O architecture requires local supervision and configuration together with PROFIBUS communication.

Communication Interface Function

The CI801 acts as the bridge between the PROFIBUS network and the local S800 I/O modules. Process data generated by input modules can be transferred toward the controller, while output-related information can be delivered to the appropriate I/O modules.

At the same time, supervision and diagnostic information can be handled through the communication interface.

This integrated approach allows one communication interface to manage the main communication and supervision functions of the S800 I/O station.

Maintenance and Identification

For maintenance and inventory purposes, the complete ABB product identification should be recorded as CI801, 3BSE022366R1.

The type designation CI801 identifies the communication interface, while 3BSE022366R1 is the associated ABB article number. Using both references helps distinguish the module from other S800 communication interfaces.

When replacing an installed unit, the PROFIBUS architecture, I/O configuration, redundancy requirements, and associated S800 components should be checked before selecting the replacement.

Compatibility Considerations

CI801 is specifically a PROFIBUS DP-V1 communication interface for S800 I/O. It should not be considered interchangeable with Ethernet-based S800 communication interfaces or redundant PROFIBUS interfaces simply because they belong to the same product family.

ABB’s S800 communication interface catalogue lists CI801 with article number 3BSE022366R1 and identifies its communication protocol as PROFIBUS DP-V1, slave operation, with no line or module redundancy.

The complete automation architecture should therefore be considered when determining whether CI801 is the appropriate communication interface.

Configuration Considerations

The CI801 participates in the configuration of the connected S800 I/O modules. The configured I/O structure should correspond with the physical modules installed in the I/O station.

Configuration parameters can include the type and arrangement of connected I/O modules and the associated communication and process settings.

Engineering and commissioning should follow the applicable ABB S800 I/O and controller documentation.

Product Identification Summary

Online Product Identification

A suitable technical product name for an industrial product catalogue is:

ABB CI801 3BSE022366R1 S800 I/O PROFIBUS DP-V1 Fieldbus Communication Interface

Useful search variations include ABB CI801, ABB 3BSE022366R1, ABB CI801 FCI, ABB CI801 PROFIBUS DP-V1, ABB S800 I/O Communication Interface, and ABB S800 PROFIBUS Communication Module.

Part Number Verification

The ABB CI801 is identified by article number 3BSE022366R1. ABB’s current hardware selector confirms CI801 as a PROFIBUS DP-V1 Fieldbus Communication Interface for S800 I/O.

The same ABB product data identifies CI801 as a PROFIBUS slave with no line redundancy and no module redundancy.

Conclusion

The ABB CI801 is a configurable S800 I/O Fieldbus Communication Interface with article number 3BSE022366R1. It provides PROFIBUS DP-V1 communication between an S800 I/O station and its controller while also managing I/O ModuleBus supervision and I/O module configuration.

Key functions include isolated power supply to I/O modules, fused input power, OSP handling, Hot Configuration In Run, and HART pass-through. ABB specifies CI801 as a PROFIBUS DP-V1 slave without line or module redundancy.

For technical cataloguing and search purposes, the recommended identification is ABB CI801 3BSE022366R1 S800 I/O PROFIBUS DP-V1 Fieldbus Communication Interface Module.