Overview

The ABB PS870A is a Bus Extension Termination Board designed for ABB’s Advant OCS and MOD 300 distributed control systems (DCS). It ensures reliable termination for bus extension connections, enabling stable communication between system modules and preventing signal degradation.

• Signal Integrity: The PS870A is engineered to maintain signal integrity, electrical isolation, and noise immunity, which is crucial for large-scale automation networks.

• Rugged Design: Its design ensures continuous operation in harsh industrial environments, while its modular rack-mount form factor simplifies both installation and maintenance.

• Long Service Life: The PS870A complies with ABB’s strict quality standards, ensuring durability and reduced downtime.

Technical Data

Typical Applications

• Distributed control systems (DCS) requiring reliable bus extension termination.

• Power generation plants where stable communication between controllers and subsystems is critical.

• Chemical and petrochemical industries needing robust bus termination in noisy environments.

• Heavy manufacturing where vibration and electrical interference demand durable bus extension boards.

• OEM integration for ABB Advant MOD 300 systems still in operation worldwide.

For example, in a refinery automation system, the PS870A ensures that bus extension signals are properly terminated, preventing communication errors and maintaining plant safety.

FAQ

Q1: What is the primary function of the PS870A?

A1: It provides proper termination for bus extension signals, ensuring reliable communication within ABB control systems.

Q2: Is it compatible with modern ABB systems?

A2: It is primarily designed for legacy Advant OCS / MOD 300 systems, but remains widely used in plants still operating these platforms.

Q3: How is the board installed?

A3: It is rack-mounted as a plug-in module, simplifying installation and replacement.

Q4: What protections does it offer?

A4: It ensures signal integrity, electrical isolation, and noise immunity for bus extension connections.

Q5: Which industries typically use this unit?

A5: Power generation, petrochemical refining, chemical processing, and heavy industrial automation sectors.