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Description
Yokogawa NFSB100-S00 SB Bus Repeat Module
The Yokogawa NFSB100-S00, also cataloged as the NFSB100-S00 Bus Repeat Module, operates as a dedicated hardware component for SB Bus signal regeneration and system backplane extension within the Yokogawa STARDOM control platform. The Yokogawa NFSB100-S00 (NFSB100-S00 Bus Repeat Module) provides direct physical/electrical execution for SB Bus segment-to-segment communication continuity in FCN-based distributed control architectures.
Hardware Specifications
Parameter
Specification
Model Brand
Yokogawa
Origin
Japan
Weight
0.25 kg
Dimensions
130 mm x 100 mm x 42 mm
Operating Temp
0 to 55 degC
Power Consumption
Max 100 mA (5 VDC backplane supply)
Product Type
SB Bus Repeat Module
Bus Interface
Proprietary SB System Backplane Bus
Function
Signal regeneration and SB Bus segment extension
Electrical Topology
Dual-port backplane repeat architecture
Yokogawa SB Bus Communication Architecture Characteristics
The NFSB100-S00 integrates into the STARDOM FCN controller backplane architecture to extend SB Bus topology across multiple base units. The module performs signal regeneration between bus segments to maintain timing alignment and electrical waveform integrity across extended rack configurations.
In Yokogawa DCS architecture, SB Bus timing is derived from deterministic backplane synchronization logic. The module operates at the physical layer, reproducing digital bus states without protocol interpretation. This enables stable propagation of controller-to-I/O communication across separated hardware frames.
In process control environments using Yokogawa platforms, SB Bus systems may coexist with 4-20 mA analog loops and HART-capable field instruments, as well as FOUNDATION Fieldbus and other field-level networks, while the NFSB100-S00 remains confined to internal system backplane extension duties.
Frequently Asked Questions
Q: Does the NFSB100-S00 perform protocol conversion between SB Bus and field networks? A: No. The module operates only at SB Bus physical regeneration level and does not perform protocol translation or fieldbus interfacing.
Q: What is the backplane load requirement of the module? A: The module draws up to 100 mA from the 5 VDC backplane supply. Power is sourced directly from the FCN base rack.
Q: Can the module operate during system maintenance replacement? A: Hot-swap capability depends on system configuration and installation procedure. In standard FCN configurations, replacement requires controlled maintenance conditions to avoid SB Bus interruption.
Field Installation Guidelines
Installation shall be performed on the designated FCN base unit slot supporting SB Bus extension modules. Ensure the backplane connector is fully seated to maintain signal continuity across the bus segment.
SB Bus cables must be routed using Yokogawa-approved connectors and kept within specified bend radius limits to prevent impedance discontinuities. Shield grounding shall be applied at single-point earth reference to minimize noise coupling between adjacent racks.
Do not mix SB Bus extension wiring with power cabling or analog signal loops. Maintain physical separation to reduce electromagnetic interference across system backplane segments.
