Overview

The ABB CI840A-EA is part of the S800 I/O family, a modular and distributed I/O system used in ABB’s System 800xA architecture. This module acts as a Fieldbus Communication Interface (FCI), enabling reliable and flexible data exchange between I/O modules and parent controllers or PLCs.

Designed for redundant applications, the CI840A-EA supports hot configuration in run, allowing system updates without interrupting operations. It also handles HART pass-through, supervision data gathering, and OSP (Output Signal Processing), making it ideal for complex process automation environments.

Moreover, its compact design and low power consumption make it suitable for installations with space and energy constraints. The CI840A-EA is widely used in industries such as oil & gas, power generation, chemicals, and water treatment, where high availability and robust communication are essential.

Technical Data

Typical Applications

• Process Automation Systems: Connects distributed I/O modules to central controllers in chemical and petrochemical plants.

• Power Generation: Facilitates real-time data exchange in turbine and boiler control systems.

• Water and Wastewater Management: Supports remote monitoring and control of pumps, valves, and sensors.

• Factory Automation: Enables flexible I/O configurations in manufacturing and packaging lines.

• Redundant Control Architectures: Ensures fault-tolerant communication in mission-critical environments.

For instance, in a refinery control room, the CI840A-EA allows seamless integration of field devices with the central control system, maintaining uptime and operational efficiency. Therefore, it’s a key component in scalable and resilient automation networks.

FAQ

Q: What systems is CI840A-EA compatible with?
A: It works with ABB’s S800 I/O and System 800xA platforms.

Q: Does it support redundant communication?
A: Yes, it is designed for redundant applications.

Q: Can it be configured during operation?
A: Absolutely. It supports hot configuration in run.

Q: What communication protocols are supported?
A: Profibus, Modbus, and IEC 61131-3 are supported.

Q: Is it suitable for harsh environments?
A: Yes, it operates reliably from –25°C to +70°C.