DCS Redundant Power Solution – YOKOGAWA PW481-10 S2 | CENTUM VP Series
Where This Product Is Used
The YOKOGAWA PW481-10 S2 is a dedicated power supply module engineered for mission-critical distributed control system (DCS) environments. It is widely deployed in the following industries and applications:
- Oil & Gas Processing: Upstream wellhead control panels, midstream pipeline SCADA, and downstream refinery DCS cabinets requiring uninterrupted 24 VDC bus power.
- Petrochemical & Chemical Plants: Reactor control loops and safety instrumented systems (SIS) where dual-redundant power rails eliminate single points of failure.
- Power Generation: Turbine governor control and boiler management systems running on CENTUM VP or CENTUM CS 3000 platforms.
- Pulp & Paper / Water Treatment: Continuous-process facilities demanding high-availability control architectures with hot-swap power redundancy.
- Pharmaceutical & Food Manufacturing: GMP-compliant automation lines where validated DCS platforms require certified, OEM-sourced power modules.
Technical Specifications
| Part Number | PW481-10 S2 |
| Manufacturer | YOKOGAWA Electric Corporation |
| Compatible Platform | CENTUM VP / CENTUM CS 3000 Field Control Station (FCS) |
| Module Type | Redundant Power Supply Module |
| Output Voltage | 24 VDC (nominal) |
| Redundancy Mode | 1:1 Hot-Standby (parallel redundant) |
| Input Voltage Range | 100–240 VAC, 50/60 Hz (wide-range) |
| Isolation | Input-to-output galvanic isolation |
| Form Factor | Rack-mount module, DIN-rail compatible carrier |
| Weight | 900 g (approx.) |
| Operating Temperature | 0 °C to +55 °C |
| Storage Temperature | -25 °C to +70 °C |
| Humidity | 5% to 95% RH (non-condensing) |
| Suffix Code | S2 — CE-marked, European safety compliance variant |
Why Engineers Specify This Model
- True Hot-Swap Redundancy: The PW481-10 S2 supports live module replacement without process interruption — critical for continuous operations where planned shutdowns are costly.
- OEM-Matched Performance: Designed exclusively for YOKOGAWA CENTUM VP FCS racks, ensuring voltage regulation, inrush current, and load-sharing characteristics meet factory specifications.
- CE / S2 Suffix Compliance: The S2 suffix confirms conformity with EU Low Voltage Directive and EMC Directive, simplifying CE-marked machine documentation.
- Long Service Life: Industrial-grade capacitors and thermal management extend MTBF beyond standard commercial power supplies, reducing lifecycle replacement costs.
- Diagnostic LED Indicators: Onboard status LEDs provide instant visual confirmation of power rail health, reducing MTTR during fault diagnosis.
Complete System Bill of Materials
When integrating the PW481-10 S2 into a CENTUM VP FCS cabinet, engineers typically specify the following companion components:
- YOKOGAWA PW481-10 S2 × 2 (redundant pair)
- YOKOGAWA EB401 — Field Control Station base unit
- YOKOGAWA CP461-50 — Dual-redundant CPU module
- YOKOGAWA ALR111 — Node interface module
- YOKOGAWA AAI141-S00 — Analog I/O module (16-ch AI)
- YOKOGAWA ADV151-P00 — Digital I/O module
- YOKOGAWA ESB Bus cable set for FCS interconnect
Contact Konmask.com for complete BOM sourcing and cross-reference assistance.
Compliance & Industry Standards
- CE Marking — EU Low Voltage Directive (LVD) 2014/35/EU & EMC Directive 2014/30/EU
- IEC 61131-2 — Programmable controllers: equipment requirements and tests
- IEC 61000-4 Series — EMC immunity (ESD, EFT, surge, conducted RF)
- UL 508 — Industrial control equipment (where applicable by project)
- RoHS Compliant — Restriction of Hazardous Substances Directive 2011/65/EU
- ATEX / IECEx — Consult project documentation; barrier or isolator required for Zone 1/2 installations
Quality Assurance & Sourcing
Konmask.com specializes in the procurement of genuine industrial automation components for MRO (Maintenance, Repair & Operations) and capital project requirements. Our sourcing process for the YOKOGAWA PW481-10 S2 includes:
- Verified Supply Chain: Units sourced from authorized distributors, OEM surplus channels, and certified secondary-market partners with full traceability documentation.
- Pre-Shipment Inspection: Visual inspection, label verification, and functional power-on test where test fixtures are available.
- Authentic Packaging: Original YOKOGAWA anti-static packaging and part labels preserved where possible.
- Documentation Package: Certificate of conformity, packing list, and commercial invoice provided with every shipment.
- Warranty: 90-day replacement warranty against DOA (Dead on Arrival) defects.
How to Source This Part
- Add to Cart — Place your order directly on Konmask.com for in-stock units.
- Request a Quote — For bulk quantities (>5 units), project BOM sourcing, or expedited delivery, email support@konmask.com.
- Provide Your PO — We accept T/T bank transfer, PayPal, and major credit cards. Net-30 terms available for qualified accounts.
- Shipping — DHL Express, FedEx International Priority, and sea freight options available. Export documentation (EX1, commercial invoice, packing list) included.
- Lead Time — In-stock units ship within 2 business days. Sourced units: 5–15 business days depending on availability.
Application-Specific FAQ
Q: Is the PW481-10 S2 compatible with CENTUM CS 3000 as well as CENTUM VP?
A: Yes. The PW481-10 S2 is mechanically and electrically compatible with both CENTUM CS 3000 and CENTUM VP FCS racks. Always verify the specific FCS model and rack generation with your YOKOGAWA system documentation before ordering.
Q: Can I run a single PW481-10 S2 without a redundant pair?
A: Technically yes, but YOKOGAWA’s design intent is 1:1 redundancy. Operating with a single module eliminates the hot-standby failover capability and is not recommended for SIL-rated or high-availability loops.
Q: What is the difference between PW481-10 S1 and PW481-10 S2?
A: The S2 suffix denotes CE-marked compliance for European markets. The S1 variant is typically specified for non-CE markets. Electrically and functionally, the modules are equivalent.
Q: Do you provide a test report or FAT documentation?
A: We provide a standard pre-shipment inspection report. Full FAT (Factory Acceptance Test) documentation is available upon request for project-critical orders at additional cost.
Q: Can Konmask.com source other YOKOGAWA CENTUM VP modules?
A: Yes. We maintain an extensive sourcing network for the full YOKOGAWA CENTUM VP, ProSafe-RS, STARDOM, and FAST/TOOLS product families. Submit your BOM to support@konmask.com for a consolidated quote.
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