ABB CI840A-EA 3BSE041882R1 S800 I/O PROFIBUS DP-V1 Redundant Interface

Description

The CI840A-EA is the main intelligence unit for S800 I/O stations, managing up to 12 modules via the ModuleBus. It converts fieldbus commands into local I/O actions and reports process data to the master controller. Supporting PROFIBUS DP-V1, it enables advanced diagnostics and remote configuration, making it ideal for critical oil and gas, pharmaceutical, and power applications.

Specifications

• Manufacturer: ABB

• Country of Origin: Sweden

• Model Number: CI840A-EA (3BSE041882R1)

• Protocol: PROFIBUS DP-V1

• Baud Rate: Auto-detecting up to 12 Mbit/s

• I/O Capacity: Supports up to 12 S800 modules per station

• Redundancy: Full 1:1 redundancy support when paired

• Input Power: 24 VDC nominal

• Current Consumption: 160 mA typical

• Galvanic Isolation: Integrated system-to-field isolation

Features

• Redundant Fault Tolerance: Optimized for paired operation to eliminate single points of failure in the communication backbone.

• Smart Device Integration: Supports DP-V1 acyclic services, enabling deep diagnostic access to HART-compatible devices through the I/O rack.

• Deterministic Performance: Provides high-speed data processing and low-latency throughput for demanding real-time control loops.

• Dynamic Module Supervision: Automatically detects, initializes, and monitors the health of all connected analog and digital units in the cluster.

• Live Module Replacement: Supports hot-swapping functionality, allowing for the maintenance of individual I/O modules without halting the station bus.

• Hardened Industrial Design: Built to withstand harsh electromagnetic conditions and a wide operating temperature range in industrial cabinets.