Product Overview

The ABB CI871A serves as a high-performance communication interface for the AC 800M controller, facilitating seamless connectivity to PROFINET IO devices via Industrial Ethernet. This expansion unit integrates sophisticated CEX-Bus logic and a dedicated communication processor to manage real-time data exchange between the controller and distributed field hardware. By utilizing the TP867 baseplate, the CI871A provides a high-speed backbone for modern industrial networks, ensuring deterministic performance in complex automation environments. We supply this module as 100% Brand New and Original, verified for compatibility with the latest System 800xA revisions.

Technical Specifications

Engineering Advantages

The CI871A addresses the rigorous requirements of high-speed industrial networking through optimized power management and standardized Ethernet connectivity.

• Dedicated PROFINET Processing: The module offloads complex PROFINET protocol stacks from the main AC 800M CPU. This dedicated processing ensures that high-speed I/O updates do not compromise controller logic execution times.

• Integrated Power Regulation: An internal DC/DC converter transforms the +24 V CEX-Bus supply into the precise voltages required for the communication logic. This local regulation prevents voltage drops from affecting signal stability across the expansion unit.

• Standardized Ethernet Topology: The CI871A utilizes the CH1 connector on the TP867 baseplate for 100Mbps transmission. By requiring an Ethernet switch for network connection, the hardware supports flexible star or tree topologies, simplifying large-scale facility wiring.

• Robust Galvanic Protection: Built-in isolation barriers shield the internal CEX-Bus and controller electronics from external electrical noise and transients common on long Ethernet cable runs. This ensures continuous uptime in high-interference environments like power plants and refineries.

FAQs

• Which software versions support the CI871A?

  The CI871A functions exclusively with System 800xA version 6.0.3.3, version 6.1.1, and all subsequent releases. Ensure your system firmware matches these requirements before installation to guarantee full module recognition.

• Can I use both RJ45 ports on the TP867 baseplate for PROFINET?

  No. While the TP867 baseplate features two ports, the system architecture specifically uses CH1 for the PROFINET IO connection. CH1 supports the 100Mbps throughput necessary for industrial-grade data exchange.

• Does the CI871A require an external power supply?

  The module draws its required operating power directly from the +24 V supply provided through the CEX-Bus. The internal DC/DC converter manages all necessary voltage stepping for the communication electronics.

• Is this a Brand New original unit?

  We guarantee that every ABB CI871A we ship is 100% Brand New and Original. Each unit arrives in its factory-sealed state, ensuring it meets all ABB performance and safety certifications for safety-critical environments.