Select I/O Communication Module | ABB 3BSE075853R1 CI845

Product Overview

The ABB CI845 (3BSE075853R1) functions as a high-performance Ethernet Fieldbus Communication Interface (FCI) specifically engineered for the ABB Ability™ System 800xA platform. This 100% brand new, original module facilitates seamless, high-speed communication between distributed S800 I/O or Select I/O subsystems and AC 800M controllers. By utilizing an Ethernet-based backbone, the CI845 decouples traditional project tasks and supports the standardization of I/O cabinetry. It acts as the intelligent gateway that manages data traffic for single-channel granular I/O systems, ensuring that automation projects maintain strict timing and budgetary requirements.

Technical Specifications

The CI845 utilizes a networked architecture to provide superior data throughput and system-wide transparency.

Engineering Advantages

The ABB CI845 3BSE075853R1 provides a flexible, networked foundation to solve complex industrial integration issues:

• Networked I/O Decoupling: The CI845 enables a "Select I/O" approach, which decouples hardware installation from software configuration. This allows engineers to standardize cabinet designs and minimize the impact of late-stage project changes, as the Ethernet-based FCI handles signal routing digitally.

• High-Availability Redundancy: For mission-critical applications, the system supports redundant CI845 installations within the TU860 or TU865 Module Termination Units (MTU). This dual-module configuration ensures that communication with the AC 800M controller remains uninterrupted even if a primary interface fails.

• Granular Signal Conditioning Support: The CI845 coordinates with Signal Conditioning Modules (SCM) to perform precise powering and conditioning for individual field devices. This single-channel granularity ensures that a fault on one channel does not compromise the communication integrity of the entire I/O cluster.

• Simplified Troubleshooting: The module reports comprehensive diagnostic data over the Ethernet network. Maintenance teams can monitor communication health and identify specific I/O module errors through the 800xA platform, reducing the need for manual signal tracing in the field.

FAQs

• How many CI845 modules do I need for a redundant setup?

  A redundant configuration requires two CI845 modules installed into a compatible Ethernet MTU, such as the TU860 or TU865. The system automatically manages the switchover between the primary and backup interfaces.

• Can the CI845 communicate with both S800 I/O and Select I/O?

  Yes. The CI845 is the primary Ethernet interface responsible for communicating both traditional S800 I/O clusters and the newer, single-channel granular Select I/O systems to the AC 800M controller.

• What is the role of the MTU in a CI845 installation?

  The Module Termination Unit (MTU), such as the TU860, provides the physical Ethernet ports and power connections for the CI845. It also enables the "hot-swap" capability, allowing you to replace an FCI module without disrupting the field wiring.

• Does this module require specific firmware for System 800xA?

  The CI845 operates within the ABB Ability™ System 800xA environment. Ensure your AC 800M controller and 800xA software version support the specific hardware revision of the 3BSE075853R1 to utilize all available diagnostic and networking features.