Process Automation Solution – YOKOGAWA SB401-51-S1 Bus Interface Module | CENTUM VP Series
Where This Product Is Used
The YOKOGAWA SB401-51-S1 Bus Interface Module is deployed in mission-critical distributed control system (DCS) architectures across a wide range of process industries. Typical application environments include:
- Oil & Gas Refineries – Field bus communication between remote I/O nodes and the CENTUM VP controller
- Chemical & Petrochemical Plants – High-integrity data acquisition in hazardous-area control loops
- Power Generation Facilities – Turbine and boiler control networks requiring deterministic bus timing
- Pulp & Paper Mills – Continuous process monitoring with redundant bus topologies
- Pharmaceutical Manufacturing – GMP-compliant automation backbones with validated communication layers
- Water & Wastewater Treatment – SCADA-integrated DCS nodes for remote pump and valve control
Technical Specifications
| Attribute | Value |
|---|---|
| Part Number / SKU | SB401-51-S1 |
| Manufacturer | YOKOGAWA Electric Corporation |
| Series | CENTUM VP |
| Module Type | Bus Interface Module |
| Communication Bus | Vnet/IP (YOKOGAWA proprietary high-speed control bus) |
| Mounting | DIN-rail / Nest-mount (CENTUM VP field control station) |
| Power Supply | Supplied via backplane (station power) |
| Operating Temperature | 0 °C to +55 °C |
| Storage Temperature | -20 °C to +70 °C |
| Humidity | 5% to 95% RH (non-condensing) |
| Weight | Approx. 300 g |
| Compliance | CE, UL, IECEx (refer to YOKOGAWA datasheet for full listing) |
Why Engineers Specify This Model
- Deterministic Vnet/IP Communication – Guarantees cycle-accurate data exchange between field control stations and the HIS/EWS, eliminating latency-induced process upsets.
- Hot-Swap Capability – Supports online replacement without shutting down the control station, maximising plant uptime during maintenance windows.
- Redundancy-Ready Architecture – Pairs seamlessly with a second SB401-51-S1 in dual-redundant bus configurations for SIL-rated loops.
- Compact Form Factor – Single-slot nest footprint preserves cabinet space in brownfield retrofit projects.
- Long Product Lifecycle – YOKOGAWA’s sustained support policy ensures spare-part availability and firmware compatibility across multi-decade plant lifetimes.
Complete System Bill of Materials
For a fully operational CENTUM VP field control station node using the SB401-51-S1, engineers typically specify the following complementary components:
- YOKOGAWA AFV10D / AFV30D Field Control Unit (FCU)
- YOKOGAWA EB401 / EB501 ESB Bus Interface Module (station-side)
- YOKOGAWA PW481 / PW482 Power Supply Module
- YOKOGAWA ANB10D / ANR10D Node Interface Unit
- YOKOGAWA AAI141 / AAI841 Analog I/O Modules
- YOKOGAWA ADV151 / ADV161 Digital I/O Modules
- Vnet/IP Ethernet Switch (managed, industrial-grade)
Contact Konmask.com for bundle pricing and cross-reference assistance.
Compliance & Industry Standards
- IEC 61511 – Functional Safety for Process Industry Sectors
- IEC 61784 – Communication Networks for Industrial Automation
- CE Marking – EMC Directive 2014/30/EU
- UL Listed – Industrial Control Equipment
- RoHS Compliant – Restriction of Hazardous Substances
Quality Assurance & Sourcing
Every YOKOGAWA SB401-51-S1 unit offered by Konmask.com undergoes a documented incoming inspection process:
- Visual inspection against YOKOGAWA cosmetic acceptance criteria
- Label and firmware version verification
- Functional power-on test where applicable
- Anti-static packaging and climate-controlled storage prior to dispatch
Units are sourced from authorised distribution channels and verified OEM surplus stock. Counterfeit-risk screening is applied to all high-demand YOKOGAWA part numbers.
How to Source This Part
- Add to Cart – Click Buy Now for immediate checkout or Add to Cart to continue browsing.
- Request a Quote – For volume orders (>3 units) or project BOM requirements, email support@konmask.com for preferential pricing.
- Lead Time – In-stock units ship within 1–3 business days. Ex-stock lead time for replenishment orders is quoted on request.
- Global Shipping – DHL Express, FedEx International Priority, and sea freight options available. Export documentation (commercial invoice, packing list, COO) provided as standard.
Application-Specific FAQ
Q: Is the SB401-51-S1 compatible with CENTUM CS 3000?
A: No. The SB401-51-S1 is designed for the CENTUM VP platform. CS 3000 uses a different bus architecture. Please contact us for the correct CS 3000 equivalent.
Q: Can this module operate in a single-bus (non-redundant) configuration?
A: Yes. The SB401-51-S1 supports both simplex and dual-redundant bus topologies. Redundancy is configured via the CENTUM VP engineering tool (CAMS for HIS).
Q: What is the maximum number of SB401-51-S1 modules per field control station?
A: Refer to the YOKOGAWA CENTUM VP Hardware Manual (IM 33J01B10-01EN) for nest slot allocation rules. Typically one module per ESB bus segment.
Q: Do you provide a warranty?
A: Konmask.com offers a 90-day functional warranty on all tested units. Extended warranty options are available on request.
Q: Can you supply the full CENTUM VP system?
A: Yes. Konmask.com specialises in complete YOKOGAWA DCS system builds and spare-part kits. Submit your BOM to support@konmask.com for a consolidated quote.
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