YOKOGAWA PW301-S4 – Redundant Power Supply Module | CENTUM CS/CS3000 DCS Platform
Engineering Background
The YOKOGAWA CENTUM CS and CS3000 Distributed Control Systems represent decades of proven reliability in process automation across refining, petrochemical, power generation, and pharmaceutical industries. The PW301-S4 is the dedicated power supply module engineered to deliver stable, conditioned DC power to field control stations (FCS) and I/O bus segments within these platforms. Its design reflects YOKOGAWA’s commitment to continuous process availability — a non-negotiable requirement in safety-critical plant environments.
Product Positioning
The PW301-S4 is a direct-fit replacement and expansion module for CENTUM CS/CS3000 field control stations. It is the preferred choice for maintenance engineers managing aging DCS infrastructure, system integrators executing brownfield upgrades, and procurement teams sourcing verified surplus components to extend the operational life of existing YOKOGAWA installations without full platform migration.
Complete Technical Specifications
- Manufacturer: YOKOGAWA Electric Corporation
- Part Number: PW301-S4
- Module Type: DC Power Supply Module
- Compatible Platform: CENTUM CS / CENTUM CS3000 DCS
- Applicable Unit: Field Control Station (FCS), I/O Bus
- Input Voltage: 24 VDC (nominal)
- Output: Regulated DC power to internal bus
- Redundancy Support: Yes — supports 1:1 redundant power configuration
- Form Factor: Rack-mount module, standard CENTUM CS3000 chassis slot
- Weight: Approx. 3,300 g
- Operating Temperature: 0°C to 55°C
- Storage Temperature: -20°C to 70°C
- Humidity: 5% to 95% RH (non-condensing)
- Certifications: CE, UL (per YOKOGAWA platform certification)
- Country of Origin: Japan
Proven Application Environments
- Oil & Gas Refining: Continuous process control stations requiring uninterrupted power with redundancy failover
- Petrochemical Plants: Multi-FCS architectures where power module standardization reduces spare-parts complexity
- Power Generation: Turbine and boiler control systems running CENTUM CS3000 with long operational cycles
- Pharmaceutical Manufacturing: GMP-compliant process control environments demanding validated hardware replacements
- Pulp & Paper / Chemical: Brownfield DCS maintenance programs extending CENTUM CS platform life beyond OEM support windows
Engineering Advantages
- Drop-in Compatibility: Direct slot replacement for existing PW301-S4 units — no firmware changes or reconfiguration required
- Redundancy-Ready: Supports hot-standby power redundancy to eliminate single points of failure in critical FCS nodes
- Stable DC Output: Precision-regulated output protects sensitive I/O modules and processor cards from voltage transients
- Compact Rack Design: Optimized for high-density CENTUM CS3000 chassis without additional cabling or adapters
- Long Service Life: Industrial-grade components rated for continuous 24/7 operation in harsh plant environments
- Reduced Downtime Risk: Stocking a verified spare eliminates lead-time exposure during unplanned outages
System Architecture & Signal Flow
Within the CENTUM CS3000 architecture, the PW301-S4 is installed in the power slot of the Field Control Station chassis. It receives 24 VDC from the plant’s UPS or DC distribution panel and converts/conditions this input to supply the internal bus powering the processor module (CP), I/O modules, and communication cards. In a redundant configuration, two PW301-S4 units operate in parallel — if the primary module fails, the secondary assumes full load without interruption to the control loop. The module communicates power status to the FCS diagnostics bus, enabling YOKOGAWA’s CENTUM CS3000 HIS (Human Interface Station) to display real-time power health alarms.
Sourcing & Quality Verification
- Stock Condition: Surplus / Refurbished — inspected prior to shipment
- Inspection Protocol: Visual inspection, connector integrity check, and functional verification where applicable
- Authenticity: All units sourced from verified industrial decommissioning projects and authorized surplus channels — no counterfeit risk
- Packaging: Anti-static ESD packaging with foam cushioning for international freight
- Documentation: Datasheet and test report available upon request
- Warranty: 90-day operational warranty against DOA (Dead on Arrival)
Procurement Process
- Confirm Compatibility: Verify your CENTUM CS/CS3000 FCS chassis slot designation matches PW301-S4 form factor
- Request Quote: Contact support@konmask.com for volume pricing, lead time, and availability confirmation
- Place Order: Purchase via this listing or via purchase order (PO) for B2B procurement
- Shipping: DHL / FedEx international express available; EXW Xiamen or CIF destination port options
- Receive & Inspect: Inspect upon receipt; report any discrepancies within 48 hours of delivery
Technical FAQ
Q: Is the PW301-S4 compatible with CENTUM VP?
A: No. The PW301-S4 is designed for CENTUM CS and CS3000 platforms. CENTUM VP uses a different power module series. Please contact us to confirm compatibility with your specific system revision.
Q: Can this module operate without redundancy?
A: Yes. A single PW301-S4 can power an FCS chassis in simplex mode. Redundancy is optional but strongly recommended for critical process loops.
Q: What is the input voltage range?
A: The module is designed for 24 VDC input. Consult the YOKOGAWA CENTUM CS3000 hardware manual (IM 33S01B30-01E) for full electrical specifications and derating curves.
Q: Do you provide a test report?
A: Yes. A functional test report is available upon request for each unit shipped. Contact us before placing your order if this is a procurement requirement.
Q: What is the lead time?
A: In-stock units typically ship within 2–3 business days. Contact us for current availability.
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