ABB TU811V1 3BSE013231R1 Module Termination Unit

The ABB TU811V1 (3BSE013231R1) is a compact and reliable termination unit (TU) specifically designed for use with the S800 I/O system. Serving as an interface between field wiring and the signal conditioning electronics of I/O modules, the TU811V1 plays a crucial role in distributed control systems (DCS) such as ABB’s 800xA. This TU model supports a single I/O module and allows DIN rail mounting, providing fast installation and easy maintenance.

The TU811V1 is widely used in industrial process automation environments where modularity, scalability, and high reliability are essential. It supports screw terminals and offers clear channel labeling, making it ideal for various analog and digital signal interfacing applications.

Product Advantages

• Compact Design: Enables efficient use of space in control cabinets.

• Ease of Installation: Designed for DIN rail mounting and includes labeled screw terminals for quick and secure wiring.

• High Compatibility: Fully compatible with S800 I/O modules, supporting a wide range of analog and digital inputs/outputs.

• Robust Construction: Built with industrial-grade materials for long-term durability in harsh environments.

• Field-Proven Reliability: Trusted in thousands of installations worldwide, ensuring continuous uptime in mission-critical operations.

• Clear Channel Labeling: Simplifies field diagnostics and reduces commissioning time.

Technical Specifications

Product Applications

• Distributed Control Systems (DCS): Core component in ABB 800xA and Freelance control systems.

• Oil & Gas: Interfaces process signals in upstream and downstream automation systems.

• Chemical & Petrochemical: Handles analog/digital I/O wiring in hazardous and general-purpose areas.

• Power Generation: Used in turbine control, BOP systems, and auxiliary plant operations.

• Water Treatment Plants: Manages sensor and actuator signals in SCADA systems.

• Manufacturing Automation: Integrates with sensors, actuators, and PLCs for factory control.

Compatible Models

The ABB TU811V1 is compatible with the following S800 I/O modules:

• AI801 (Analog Input)

• AO801 (Analog Output)

• DI801 (Digital Input)

• DO801 (Digital Output)

• DI802 / DO802 (Isolated I/O modules)

• Redundant applications with CI801 / CI840 controllers

It also interfaces with system backplanes and modules such as:

• TB810 (ModuleBus terminator)

• TB820V2 (Redundant ModuleBus extender)

Installation Instructions

1. Mounting: Attach the TU811V1 onto a 35 mm DIN rail inside the control panel.

2. Wiring: Connect field wiring to the terminal points according to the I/O module channel map.

3. Module Insertion: Install the appropriate S800 I/O module directly onto the TU811V1.

4. Bus Connection: Connect the TU811V1 to the ModuleBus using the TB820/TB810 interface modules.

5. Labeling: Use provided channel labels to identify terminal connections.

6. Power Check: Ensure the system is de-energized during installation to prevent electrical shock or module damage.