Overview

The ABB TU850 is a compact communication and termination module designed for ABB’s S800 I/O system. It simplifies field wiring and system integration, acting as the interface between I/O modules and field devices.

Key functions include:

• Distributing ModuleBus signals.

• Generating the correct address for each connected I/O module.

• Supporting non‑redundant I/O applications, offering a cost-effective solution for industrial automation.

Its DIN rail mounting and mechanical latch system enable fast installation, while mechanical keys provide flexible configuration for different I/O module types. The TU850 also ensures secure two‑wire connections for up to 16 channels, with built-in fused transducer power supply options.

Technical Data

Key Features

• Connects field signals to I/O modules and distributes ModuleBus.

• Supports up to 16 channels with secure 2‑wire connections.

• Flexible addressing via mechanical keys (36 configuration options).

• DIN rail mounting with mechanical latch for fast and secure installation.

• Built-in fused transducer power supply for reliable operation.

• Compact, durable design suitable for harsh industrial environments.

Typical Applications

• Process industries: Chemical, oil & gas, pharmaceutical plants requiring reliable I/O communication.

• Power generation & utilities: Substation automation and plant control systems.

• Manufacturing automation: Production line monitoring and distributed I/O integration.

• Infrastructure systems: Water treatment and transportation automation requiring robust communication modules.

FAQ

Q1: What is the primary function of the ABB TU850?
A1: It connects field signals to I/O modules, distributes the ModuleBus, and configures addresses.

Q2: How many channels does it support?
A2: Up to 16 I/O channels.

Q3: What voltage and current ratings apply?
A3: Max 50 V, 15 mA per digital input channel or 25 mA per two analog input channels.

Q4: How is it mounted?
A4: On a DIN rail with a mechanical latch for secure installation.

Q5: Where is it typically used?
A5: In System 800xA installations across process industries, utilities, and manufacturing automation.