ABB CI840A 3BSE041882R1 Communication Interface Module

ABB CI840A 3BSE041882R1 Communication Interface Module Overview

The ABB CI840A 3BSE041882R1 is a high-performance communication interface module designed for use in the AC 800M controller system. It acts as a communication bridge between the controller and various I/O modules in distributed control applications. The CI840A provides fast, reliable data exchange through its PROFIBUS DP-V1 protocol support. It is widely used in large industrial systems where accurate control and fast response are required. Its robust build ensures it performs reliably under demanding industrial conditions such as high temperature, humidity, and vibration. This module is hot-swappable, allowing users to replace it without shutting down the entire system, which improves system uptime and operational efficiency.

The CI840A module works together with the PM856A, PM857, or PM861 controllers. It fits into a horizontal module bus, allowing multiple modules to be mounted side by side for better space utilization in control cabinets. The module is equipped with LEDs for real-time status monitoring, helping technicians quickly identify faults or operational changes. It includes built-in protection features that help prevent damage from overvoltage, short circuits, or communication faults. These features ensure longer operational life and reduce maintenance costs. Its plug-and-play nature allows users to install and configure it with ease, supporting rapid deployment in time-sensitive projects. The CI840A also meets global industry certifications, making it suitable for use in regulated industries like oil and gas, chemical, and power generation.

ABB has consistently been a leader in industrial automation. The CI840A is part of its Modular ABB Advant Controller Series, providing scalable solutions for both centralized and decentralized control systems. Industrial companies choose modules like the CI840A because they support flexible system architecture and simplify communication with I/O devices. Today’s manufacturing and process industries demand systems that are not only fast but also easy to maintain and adapt. Modules such as the CI840A help plants stay productive and competitive in a global market. With the rise in smart manufacturing, communication interface modules continue to be critical for connecting devices and enabling real-time data transfer across complex systems.


Zhangzhou Fengyun Electric Equipment Co., Ltd. specializes in industrial automation products with a strong focus on European and American control brands. The company provides a full range of services, including product sourcing, technical support, and fast shipping. Their professional team supports customers in industries like energy, marine, oil and gas, and manufacturing. Sales engineer Amy is available at 15359029662 or via email at geabbamy@gmail.com for consultation, product recommendations, and support. Fengyun Electric is known for reliable after-sales service, ensuring customers get both quality products and responsive technical assistance.

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