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The CI820V1 3BSE025255R1 is an AF100 Fieldbus Communication Interface (FCI) module for S800 I/O systems. In distributed control systems (DCS), it acts as a communication bridge between local I/O stations and the upper-level master controller, enabling high-speed data upload and command issuance through proprietary network protocols.
The module supports full-duplex
Dual-channel communication redundancy
Fully supports hot-swapping
Functioning as the physical gateway that connects local I/O modules to the master control architecture of the Advant Fieldbus 100 (AF100) network. Operating at a fixed transmission speed of 1500 kbit/s, this device centrally processes process data from up to 12 extension modules via the internal ModuleBus and supports vertical high-density installation on 35mm DIN rails under an IP20 enclosure protection rating.
To fulfill high-availability requirements, the module supports a 1+1 hot-standby configuration when paired with the TU820 dual-slot base, permitting hot-swappable replacement of a faulty unit without cutting off the power supply or disrupting bus communication. The hardware incorporates onboard rotary switches for manual station address configuration, real-time diagnostic LED indicators, and carries ATEX Zone 2 explosion-proof and marine classification society certifications, making it thoroughly suited for complex heavy industrial environments.
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description.
ABB CI820V1 3BSE025255R1 Fieldbus Communication Interface Manuals, Datasheets, Drivers, Link
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description.
Oil & Gas Extraction and Refining
Used for I/O data acquisition of pressure, flow, and temperature from oil/gas wellhead consoles, offshore drilling platforms, and long-distance pipeline pump stations. Redundant communication ensures continuous transmission of leak detection data in harsh environments.
Chemical & Petrochemical Industry
Serves as a network interface in Distributed Control Systems (DCS) for large reactors and high-risk distillation columns, uploading critical material ratios and interlock alarm signals in real-time to prevent production interruption or overpressure explosion due to local communication failures.
Thermal & Nuclear Power Generation
Applied in Steam Turbine Control Systems (DEH) and boiler makeup water systems to collect analog/digital signals from thousands of field sensors to the master controller at high frequencies, supporting safe power dispatching.
Pharmaceutical
Inside GMP-compliant fermenters, sterilization lines, and fine batching systems, it ensures zero downtime on the communication link for key environmental parameters (sterility, temperature, pressure) during batch production to prevent batch scrapping.
Pulp & Paper Industry
Coordinates various distributed I/O stations in the wet-end pulping, dryer section temperature control, and approach flow systems of high-speed paper machines to maintain high-precision, closed-loop control communication for paper basis weight and moisture.
When operating the CI820V1, ensure it is properly seated on its compatible redundant MTU (e.g., TU840), with the AF100 station address and terminating resistors correctly configured to prevent network storms. Although the module is fully hot-swappable, live removal or insertion in hazardous locations (Zone 2/Div 2) requires strict verification that the atmosphere is non-explosive, and rigorous electrostatic discharge (ESD) grounding precautions must be maintained to prevent component damage.
The ABB CI820V1 (3BSE025255R1) is a Fieldbus Communication Interface (FCI) module for the S800 I/O system, acting as a physical gateway between local I/O modules and the upper-level controller via the AF100 protocol at 1500 kbit/s. It supports 1+1 hot-standby redundancy with the TU820 base, featuring hot-swap capabilities for increased availability in heavy industrial environments. Key features include IP20 protection, 0°C to +55°C operating range, ATEX Zone 2 approval, and onboard rotary switches for AF100 address configuration.
This is a redundant fieldbus interface module in the ABB S800 series I/O modules. It is a key communication component in the AC 800M high-end process controller system, used to achieve redundant connections in the fieldbus network.
What is the use of CI820V1 3BSE025255R1?
Its core function is to provide a highly available fieldbus communication interface for ABB S800 I/O stations. As a redundant master/link device in Profibus DP or Foundation Fieldbus H1 networks, it achieves automatic, seamless switching of communication paths through a dual-channel design, ensuring uninterrupted I/O data exchange in the event of a single point of failure.
Which systems is CI820V1 3BSE025255R1 compatible with?
Its compatibility is strictly limited to ABB's specific control and I/O architectures.
How is CI820V1 3BSE025255R1 assembled and used in the field?
It must be plugged into a compatible module base (such as the TU820 MTU) and snapped onto a standard DIN rail via physical clips.
What is the primary application of CI820V1 3BSE025255R1?
It is primarily used in Distributed Control Systems (DCS) as a bus gateway to centrally upload data from local S800 I/O modules to the master controller over the network.
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