ABB TU848 3BSE042558R1 S800 I/O Redundant Module Termination Unit

Description

The TU848 3BSE042558R1 is a passive backplane that integrates redundant ModuleBus connections and power distribution. It hosts two communication modules for seamless failover and fault-tolerant process control. Featuring dedicated terminal blocks for dual 24V DC power inputs, it ensures power redundancy. The robust DIN-rail mountable housing includes mechanical keying to prevent incompatible module installation. With no active electronics, the TU848 maximizes MTBF, ensuring high reliability in demanding industrial environments.

Specifications

• Manufacturer: ABB

• Model Number: TU848 (3BSE042558R1)

• Product Type: Redundant Module Termination Unit

• Supported Modules: Dual CI840 Communication Interfaces

• Input Voltage: 24 V DC (Redundant dual feeds)

• Maximum Current: 5 A

• Bus Interface: Redundant ModuleBus

• Mounting: 35mm DIN Rail

• Protection Class: IP20

• Operating Temperature: -25 to +70 °C

• Weight: 0.54 kg

Features

• Redundancy-Ready Architecture: Specifically built for dual-interface setups to eliminate single points of failure in the communication network.

• Dual Power Feed Management: Accommodates two independent power sources to ensure the I/O cluster remains energized during a power supply fault.

• Hot-Swap Support: Enables the replacement of a faulty communication module without interrupting the partner module or the active control process.

• Reliable Passive Backplane: Minimizes internal failure risks by utilizing hardware-based signal routing without active electronic components.

• Mechanical Safety Coding: Features integrated physical keying pins to ensure only compatible module types are seated, enhancing site safety.

• Industrial Durability: Optimized for high-vibration and high-temperature environments, ensuring long-term stability in process control cabinets.