ABB CI845 3BSE075853R1 Ethernet Fieldbus Communication Interface

Technical Overview

The CI845 (Part Number: 3BSE075853R1) is a high-performance Ethernet Fieldbus Communication Interface (FCI) designed for the ABB Select I/O and S800 system. It functions as a robust slave station, bridging field modules to the controller via high-speed Ethernet. Engineered for maximum availability, it supports full redundancy, hot-swapping, and integrated HART pass-through. Its exceptional temperature range and hazardous area certification make it a premier choice for demanding industrial environments.

Comprehensive Technical Specifications

• Manufacturer: ABB

• Article Number: 3BSE075853R1

• Module Type: Ethernet FCI (Slave)

• Communication Protocol: Ethernet-based

• Redundancy & Hot Swap: Supported (Yes)

• HART & SOE Support: Yes

• Input Voltage Range: 19.2 to 30 V DC

• Power Dissipation: 5 W

• Isolation: Galvanic isolation (Power supply vs. I/O modules)

• Operating Temperature: -40°C to +70°C (-40°F to 158°F)

• Protection Class: IP20

• Hazardous Area Rating: Certified for Hazardous Locations

• Altitude Capability: -1000 to 5000 m (with restrictions)

• Compliance: IEC/EN 61000-6-4, IEC/EN 61000-6-2 (EMC)

Typical Applications

• High-Availability Control: Utilizing redundant Ethernet links for critical process loops in oil, gas, and power generation.

• Remote I/O Networking: Connecting Select I/O clusters to AC 800M or other Ethernet-enabled controllers over large distances.

• Smart Instrument Management: Leveraging HART support for remote diagnostic access to field-mounted transmitters.

• Extreme Environment Deployment: Operating reliably in outdoor or unconditioned cabinets thanks to its -40°C to +70°C rating.