YOKOGAWA S9342FA 2-CHANNEL BUS INTERFACE MODULES

Description:

The Yokogawa S9342FA 2-Channel Bus Interface Module is used a communication interface unit used in Yokogawa ProSafe-RS and CENTUM safety/control systems. It functions as a connector/interface for the Enhanced System Bus (ESB), enabling communication between field I/O modules and the safety control unit (FCU). This module is typically installed within safety node units and supports reliable data transmission in safety-critical environments.

Applications:

The Yokogawa S9342FA is used in industrial environments to enable communication between field devices and control systems via the ESB bus. It is commonly deployed in safety instrumented systems (SIS), chemical processing, oil & gas, power generation, and manufacturing plants. The module ensures stable and redundant communication between I/O modules and controllers, supporting safe and continuous plant operation.

Technical Specifications:

• Manufacturer: Yokogawa
• Model / Part Number: S9342FA
• Product Type: 2-Channel Bus Interface / ESB Connector Unit
• Function: Interfaces I/O modules with ESB system bus
• Channels: 2 independent communication channels
• System Compatibility:
• ProSafe-RS Safety Instrumented Systems
• CENTUM / FIO Node Units
• Communication Role: Connects field I/O to safety control unit via ESB bus
• Power Supply: 24 VDC
• Current Consumption: ~50 mA max
• Supported Protocols (system dependent):
• Modbus RTU
• Profibus DP
• DeviceNet
• CC-Link
• Operating Temperature: -20°C to +60°C
• Mounting: Installed within node unit / rack system
• Weight: ~0.24–0.3 kg

Common Replacements:

• Yokogawa S9343FA (with terminator)
• Yokogawa SSB401 Bus Interface Module
• System-specific ESB interface modules (exact match typically required)