Process Control Power Solution – YOKOGAWA PS31*A | CENTUM Series
The YOKOGAWA PS31*A is a dedicated power supply module engineered for the CENTUM distributed control system (DCS) platform. Designed to deliver stable, regulated DC power to field controllers, I/O modules, and communication buses, this unit is a critical infrastructure component in continuous-process industries where power interruption is not an option.
At Konmask.com, we source PS31*A units through verified industrial channels, inspect each module before dispatch, and support procurement engineers with full documentation and traceability.
Where This Product Is Used
The PS31*A is specified across a wide range of high-availability process environments:
- Oil & Gas Refineries — Powers CENTUM VP/CS3000 field control stations (FCS) in upstream and downstream processing units
- Petrochemical Plants — Sustains DCS backbone power in ethylene crackers, polymerization reactors, and distillation columns
- LNG Terminals — Provides stable power to safety-critical control loops in liquefaction and regasification trains
- Power Generation — Deployed in boiler management systems (BMS) and turbine control panels at coal, gas, and combined-cycle plants
- Pulp & Paper Mills — Maintains continuous power to process control networks in digester and recovery boiler sections
- Pharmaceutical Manufacturing — Supports GMP-compliant DCS installations in batch reactors and clean-room HVAC control
- Water & Wastewater Treatment — Installed in SCADA-integrated DCS panels for pump station and filtration control
- Chemical Processing — Used in multi-loop control architectures for exothermic reaction management
Technical Specifications
| Parameter | Specification |
|---|---|
| Model | PS31*A (PS311A / PS312A / PS313A variants) |
| Manufacturer | YOKOGAWA Electric Corporation |
| Product Series | CENTUM DCS Platform |
| Module Function | DC Power Supply for FCS / I/O Bus |
| Output Voltage | 24 VDC (regulated) |
| Input Voltage Range | 100–240 VAC, 50/60 Hz (model-dependent) |
| Redundancy Support | Yes — dual power supply redundancy supported |
| Mounting | DIN rail / CENTUM nest-mount |
| Weight | 1,200 g (approx.) |
| Operating Temperature | 0°C to +55°C |
| Storage Temperature | -25°C to +70°C |
| Humidity | 5% to 95% RH (non-condensing) |
| Protection Class | IP20 |
| Certifications | CE, UL, cUL (model-dependent) |
| Compatibility | CENTUM CS3000, CENTUM VP, CENTUM VP R6 |
* Exact sub-variant (PS311A, PS312A, PS313A) determines input voltage range and output capacity. Please confirm your system BOM before ordering.
Why Engineers Specify This Model
- Platform-Native Design — Engineered exclusively for CENTUM architecture; no compatibility shims or adapters required
- Redundant Power Architecture — Supports N+1 redundancy configurations to eliminate single points of failure in critical control loops
- Hot-Swap Capability — Allows module replacement without shutting down the DCS, minimizing process downtime
- Stable DC Output — Tight voltage regulation ensures consistent performance for sensitive analog I/O cards and communication modules
- Long Service Life — Designed for 24/7 continuous operation in industrial environments with high MTBF ratings
- OEM Traceability — Each unit carries YOKOGAWA part markings, enabling full audit trail for maintenance records and insurance compliance
- Compact Form Factor — Fits standard CENTUM nests without panel modification, simplifying like-for-like replacement
Complete System Bill of Materials
The PS31*A is typically deployed alongside the following CENTUM platform components:
- FCU (Field Control Unit) — YOKOGAWA FFCU, SFCU, or PFCU depending on system generation
- I/O Modules — AAI141, AAI841, ADV151, ADV551 analog/digital I/O cards
- Communication Bus — Vnet/IP or ESB bus interface modules
- Redundant Power Pair — Second PS31*A unit for N+1 redundancy
- Nest / Backplane — YOKOGAWA ANB10D or equivalent CENTUM nest
- Engineering Workstation — YOKOGAWA CENTUM VP EWS with HIS license
- UPS Interface — External UPS with dry-contact alarm output to DCS
Contact our technical team for a complete BOM review and cross-reference service.
Compliance & Industry Standards
- IEC 61511 — Functional Safety for Process Industry Sectors (SIL-capable installations)
- IEC 61010-1 — Safety requirements for electrical equipment for measurement and control
- CE Marking — Compliant with EU Low Voltage Directive and EMC Directive
- UL / cUL Listed — North American safety certification (model-dependent)
- RoHS Compliant — Restriction of Hazardous Substances (EU Directive 2011/65/EU)
- ATEX / IECEx — Consult factory for hazardous area installation requirements
Quality Assurance & Sourcing
Every PS31*A unit supplied by Konmask.com undergoes a structured verification process before shipment:
- Visual Inspection — PCB, connectors, housing, and label integrity checked against OEM reference
- Functional Power-On Test — Output voltage and ripple measured under load conditions
- Firmware / Revision Check — Hardware revision confirmed against YOKOGAWA compatibility matrix
- Packaging Integrity — Anti-static packaging with desiccant; shock-rated outer carton for international freight
- Documentation Package — Includes test report, packing list, and certificate of conformance upon request
We maintain relationships with authorized YOKOGAWA distributors and certified industrial surplus channels. We do not source from unverified grey-market suppliers.
How to Source This Part
- Confirm Sub-Variant — Identify your exact model suffix (PS311A, PS312A, or PS313A) from your system nameplate or CENTUM engineering drawings
- Submit RFQ — Email support@konmask.com with your model number, required quantity, and delivery timeline
- Receive Quotation — We respond within 1 business day with pricing, lead time, and stock availability
- Order Confirmation — Purchase order accepted via email; proforma invoice issued for wire transfer or credit card payment
- Inspection & Dispatch — Unit tested, documented, and shipped via DHL / FedEx with tracking and insurance
- After-Sales Support — Technical support available post-delivery for installation verification and compatibility queries
Application-Specific FAQ
Q: Can the PS31*A be used in a redundant power configuration?
A: Yes. CENTUM systems support dual power supply slots. Two PS31*A units can be installed in parallel for N+1 redundancy, with automatic failover and no process interruption.
Q: What is the difference between PS311A, PS312A, and PS313A?
A: The suffix designates the input voltage range and output current capacity. PS311A is typically 100–120 VAC input; PS312A covers 200–240 VAC; PS313A may support wider input ranges or higher output current. Always verify against your CENTUM system documentation.
Q: Is this module compatible with CENTUM VP R6?
A: Compatibility depends on the specific hardware revision. Please provide your system generation and nest type when submitting your RFQ so we can confirm the correct revision.
Q: Do you provide a warranty on this module?
A: Yes. Konmask.com provides a 90-day functional warranty on all power supply modules. Extended warranty options are available upon request.
Q: Can you supply multiple units for a plant-wide spares program?
A: Yes. We support bulk procurement for MRO spares programs. Volume pricing and scheduled delivery are available for orders of 5+ units.
Q: What documentation is included with the shipment?
A: Standard shipment includes packing list and test report. Certificate of conformance, YOKOGAWA datasheet, and installation manual are available upon request.
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