Product Description

The NFSB100-S50/SBT02 is a high-speed SB Bus repeater module designed for the Yokogawa CENTUM VP and Yokogawa CENTUM CS 3000 Field Control Station (FCS) architectures.

This module functions as a communication backplane extension bridge, enabling multiple I/O nests to operate as a unified control hardware domain. It ensures deterministic, low-latency communication across extended hardware configurations.

Key design features include:

• 128 Mbps high-speed serial SB Bus communication

• Support for duplexed high-availability architectures

• Low power consumption with backplane-powered operation

• Industrial-grade noise and thermal shielding

The compact form factor allows installation in dense control cabinet environments while maintaining signal integrity for real-time process automation.

Technical Specifications

System Architecture and Use Case

The NFSB100-S50/SBT02 is commonly deployed when:

• An I/O nest lacks sufficient physical slot capacity

• Large distributed control systems require extended hardware racks

• High-density signal processing is required in refinery, petrochemical, or power generation facilities

The module allows multiple I/O racks to function as a logically unified backplane, maintaining synchronized control data exchange with the Field Control Station.

Technical FAQ

Does the NFSB100-S50/SBT02 require external power?
No. The module draws power directly from the system backplane’s 5 V DC supply, simplifying installation and reducing wiring complexity.

What is the advantage of the 128 Mbps transmission rate?
The high-speed bandwidth ensures deterministic refresh cycles for analog and digital signals even in large-scale I/O expansions, reducing communication latency in critical control loops.