Yokogawa BUS2 FCU Bus Interface Module

Overview

The Yokogawa BUS2 is a high-performance Bus Interface Module designed for integration within Field Control Units (FCUs) such as AFV30, AFV40, A2FV50, and A2FV70. It provides a reliable, high-speed communication link between the FCU processor and I/O node units, ensuring deterministic data exchange for mission-critical industrial applications.

Modules described as “excellent condition” are fully tested, free from PCB damage or corrosion, with clean connectors and intact shielding, meeting all original electrical specifications for direct installation in operational DCS environments.

Technical Specifications

General

Functional Characteristics

• Deterministic, high-speed bus communication for precise process control

• Supports duplex/redundant bus paths for fault-tolerant operation

• Synchronizes data exchange between CPU and I/O nodes

• Built-in self-diagnostics for communication integrity

• Online replacement capability in redundant configurations

• Engineered for continuous 24/7 industrial operation

Performance

• Low-latency communication optimized for fast control loops

• Supports extensive I/O node networks

• Stable performance under high communication load

Electrical & Environmental

Mechanical

Applications

• FCU communication backbone in CENTUM VP / CS 3000 systems

• High-availability process control loops

• Power generation, petrochemical, refining, and water treatment

• System expansions, replacements, and spare-part inventory

FAQ

Q: Can the BUS2 module be used in redundant FCU configurations?
A: Yes, the BUS2 supports duplex/redundant bus paths and allows online replacement in redundant setups.

Q: Does this module require external power?
A: No, it draws 24 VDC power directly from the FCU base unit.

Q: Are similar models compatible?
A: BUS2 is compatible with AFV30, AFV40, A2FV50, and A2FV70 FCUs. Other Yokogawa FCU modules may require evaluation for compatibility.