Overview

The ABB TU834 is a versatile termination unit within the S800 I/O family, designed for distributed control systems (DCS). It provides mechanical and electrical interfaces for I/O modules, distributing signals and power while managing module addressing. This extended MTU supports up to 8 I/O channels and includes 2+2 process voltage connections, making it suitable for complex automation setups.

Moreover, each channel features two I/O connections and one ZP (shield) connection, ensuring robust signal integrity and grounding. In addition, the TU834 facilitates seamless ModuleBus continuity and address shifting, allowing scalable expansion of I/O networks. Therefore, it’s ideal for industries requiring modular, high-density I/O configurations, such as power generation, water treatment, and manufacturing.

Technical Data

Typical Applications

Distributed Control Systems (DCS)

Provides termination and signal routing for I/O modules in modular control architectures.

Power Generation Facilities

Supports high-density I/O configurations for turbine, boiler, and auxiliary system control.

Water and Wastewater Treatment

Interfaces with sensors and actuators across distributed process areas.

Manufacturing Automation

Enables scalable I/O expansion for packaging, assembly, and material handling systems.

Example:
In a large-scale water treatment plant, the TU834 allows seamless integration of multiple sensor inputs and actuator outputs across remote panels, simplifying installation and maintenance.

FAQ

Q: How many I/O channels does the TU834 support?
A: It supports up to 8 channels, each with dual signal and shield connections.

Q: Can it be used with other S800 I/O modules?
A: Yes, it integrates fully with the S800 I/O system and supports ModuleBus continuity.

Q: What’s the maximum voltage and current rating?
A: The unit supports up to 50 V and 2 A per channel.

Q: Is the TU834 suitable for outdoor use?
A: It is designed for indoor industrial environments; outdoor use requires protective enclosures.

Q: Does it include shunt sticks for signal connection?
A: Yes, input signals are connected via TY801 shunt sticks.