ABB CI840A 3BSE041882R1 PROFIBUS‑DP‑V1 Fieldbus Communication Interface Module

Technical Specifications

• Model: CI840A

• Part Number: 3BSE041882R1

• Brand: ABB

• Product Type: PROFIBUS‑DP‑V1 fieldbus communication interface module

• Communication Protocol: PROFIBUS‑DP‑V1, works as slave station

• Bus Interface: 9‑pin D‑Sub PROFIBUS‑DP connector

• ModuleBus: Connect to S800 I/O cluster, maximum 12 S800 I/O modules per CI840A

• Baud Rate: 9.6kbit/s‑12Mbit/s adaptive

• Redundancy Support: Support line redundancy and module redundancy configuration

• Special Function: HART pass‑through, Hot Configuration In Run, OSP processing

• Power Supply: Isolated power supply for S800 I/O modules, built‑in input fuse protection

• Operating Temperature: 0℃ ~ +60℃, non‑condensing

• Protection Class: IP20

• Weight: 0.3kg

• Mounting: Cooperate with TU846 / TU847 termination unit installation

• Compatible System: ABB System 800xA, S800 distributed I/O system

• Core Function: Realize data interaction between upper controller and S800 I/O cluster via PROFIBUS‑DP‑V1 bus, complete I/O signal acquisition and output, support HART instrument transparent transmission.

Product Details

The CI840A 3BSE041882R1 is high‑reliability PROFIBUS‑DP‑V1 Interface Module for ABB S800 distributed I/O system, it acts as core S800 I/O Fieldbus Unit. It is widely used for connecting S800 I/O clusters to DCS controller through PROFIBUS‑DP‑V1 fieldbus.

This module supports both line redundancy and module redundancy modes, which greatly improve communication stability of critical process loops. It can carry up to 12 S800 I/O modules, realizes signal collection and control output of analog and digital channels. It integrates HART pass‑through function, enables transparent access to HART smart field instruments. Hot Configuration In Run allows modifying I/O configuration without system shutdown, effectively reduces production downtime. Built‑in fuse provides fast over‑current protection for I/O power supply.

Front‑panel LED indicators display power status, PROFIBUS‑DP link and ModuleBus communication state. Built‑in comprehensive diagnosis can detect fuse failure, bus short‑circuit, I/O module fault and internal hardware abnormality, fault information can be uploaded to 800xA operation station. Industrial‑grade circuit design meets strict EMC anti‑interference requirements for power plant and petrochemical cabinet environment.

Match with TU846 redundant termination unit or TU847 non‑redundant termination unit for installation. Widely applied in thermal power, petrochemical, pulp‑paper and metallurgy industries. It is essential communication hardware for S800 I/O system construction, HART instrument access and defective fieldbus interface module replacement for legacy 800xA automation projects.