Overview

The ABB CI840A-1 is a robust and compact communication module engineered for industrial automation systems that require reliable and scalable I/O integration. It is part of the S800 I/O family, which is widely used in System 800xA environments for process control, power generation, and manufacturing.

This module supports the PROFIBUS DP-V1 protocol, enabling fast and deterministic communication with field devices. It is designed for redundant applications, allowing two CI840A modules to operate in parallel with TU846 or TU847 base units. Moreover, the CI840A-1 supports hot swapping, meaning it can be replaced without shutting down the system, minimizing downtime and simplifying maintenance.

In addition, its compact form factor and low power consumption make it ideal for installations with space and energy constraints. The CI840A-1 is built to withstand harsh industrial environments and ensures long-term reliability in mission-critical applications.

Technical Data

Typical Applications

• Process Automation: Connects distributed I/O modules to central controllers in chemical, pharmaceutical, and food industries.

• 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-1 allows seamless integration of field devices with the central control system, maintaining uptime and operational efficiency.

FAQ

Q: What systems is CI840A-1 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 1+1 redundancy with TU846 or TU847 base units.

Q: Can it be hot-swapped during operation?
A: Absolutely. It supports hot swapping for easy maintenance.

Q: What communication protocol does it use?
A: It uses PROFIBUS DP-V1 for high-speed industrial communication.

Q: Is it suitable for harsh environments?
A: Yes, it operates reliably from –25°C to +70°C with IP20 protection.