Overview

The ABB TU518 is part of the S500 I/O series within the AC500 PLC family, designed as a bus terminal unit for distributed I/O systems. It provides the mechanical and electrical interface between I/O modules and field wiring, ensuring secure and reliable communication. The TU518 supports CS31 bus serial communication protocols and integrates seamlessly with ABB’s AC500 PLC platform. With spring terminal connections, it guarantees fast, maintenance‑free wiring in demanding industrial environments.

Technical Data

Key Features

• Supports CS31 bus communication for distributed I/O systems

• Spring terminal connections for quick and secure wiring

• Compact design with only 28 mm depth

• DIN rail mounting for easy installation

• XC version available for extreme ambient conditions

• Part of ABB’s AC500 PLC family, ensuring seamless integration

Typical Applications

• Industrial automation requiring distributed I/O communication

• Process control in petrochemical and refinery industries

• Power generation and energy systems with CS31 bus integration

• Manufacturing and robotics requiring secure wiring interfaces

• Marine and transportation automation solutions

FAQ

Q1: What is the primary function of the ABB TU518?
A1: It serves as a bus terminal unit for CS31 bus communication, providing the wiring interface.

Q2: How is wiring connected?
A2: The TU518 uses spring terminals for fast and reliable connections.

Q3: Can it be used in extreme environments?
A3: Yes, ABB offers an XC version designed for harsh ambient conditions.

Q4: What PLC family does it belong to?
A4: It is part of the ABB AC500 PLC / S500 I/O system.

Q5: How is it installed?
A5: It is mounted on a DIN rail, making installation quick and straightforward.