3BSE022462R1 TU847 ABB MTU for Redundant I/O

Description

3BSE022462R1 TU847 ABB MTU for Redundant I/O(Termination Unit)

Product Dimensions：

Product Description (Detailed Explanation)

The TU847 serves as the structural and electrical foundation for the CI840/CI840A communication modules. It is a dual-slot baseplate that provides the physical mounting points, power distribution, and signal routing for two identical FCIs operating in a primary/backup configuration.

The unit is designed to be DIN-rail mounted and acts as the bridge between the internal ModuleBus (where I/O modules are connected) and the external PROFIBUS DP network. It facilitates the “hot-swap” capability of the S800 system, allowing a faulty CI840 module to be replaced while the redundant partner maintains full control of the I/O station.

Product Parameters (Technical Specifications)

Product Advantages (Key Benefits)

• Maximum System Availability: By supporting dual CI840 modules, it eliminates a single point of failure in the communication path between the controller and the I/O.

• Hot-Swap Functionality: Maintenance can be performed without shutting down the plant. A failed module can be removed and a new one inserted while the system is “live.”

• Integrated Power Distribution: The TU847 distributes the 24V DC power to both communication modules and the connected I/O cluster, simplifying cabinet wiring.

• Mechanical Robustness: Features high-quality vibration-resistant connectors and a secure locking mechanism to ensure stable contact in harsh industrial environments.

• Easy Diagnostics: Provides clear physical access to PROFIBUS connectors and service ports for rapid troubleshooting.

Precautions (Important Notes)

• Redundancy Requirements: For the redundancy to function correctly, both CI840 modules must have the same hardware revision and firmware version.

• DIP Switch Settings: Before mounting the modules onto the TU847, ensure the station address DIP switches on the CI840 modules are set identically.

• Earthing and Shielding: To prevent PROFIBUS communication errors, the DIN rail must be properly grounded, and the cable shields must be correctly clamped to the grounding strip.

• Power Loading: Ensure that the 24V DC supply provides enough current for both the redundant FCIs and the total number of I/O modules connected to the ModuleBus.

Product Applications (Typical Use Cases)

• Continuous Process Industries: Critical for Oil & Gas refineries and Chemical plants where a communication loss could lead to hazardous conditions or massive financial loss.

• Power Generation: Used in DCS (Distributed Control Systems) for boiler and turbine control where high reliability is mandatory.

• Water & Wastewater: Managing remote pump stations and treatment facilities that require 24/7 uptime.

• Large-scale Manufacturing: Integrated into ABB Ability™ System 800xA architectures to manage dense I/O configurations across large factory floors.

Shipping Port: Xiamen, China

Payment: Bank of Chicago, Bank of Singapore

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