PW301- High efficiency, low power consumption, providing continuous power for your industrial control system!

<p>The <strong><b>YOKOGAWA PW301</b></strong> is a robust redundant power supply module designed for Yokogawa’s CENTUM CS 3000 and CENTUM VP Distributed Control Systems (DCS), delivering critical 5VDC/24VDC power to controllers, I/O modules, and communication networks in mission-critical process industries. Engineered for 24/7 reliability in harsh environments like refineries, power plants, and offshore platforms, the <strong><b>PW301</b></strong> features dual-input AC/DC compatibility with automatic load sharing and seamless failover (<5 ms). Its convection-cooled (fanless) design eliminates moving parts, ensuring silent operation and extended service life in dusty or explosive atmospheres (ATEX Zone 2 certified). With integrated diagnostics for voltage ripple, temperature, and current imbalance monitoring, the <strong><b>YOKOGAWA PW301</b></strong> maintains system integrity during grid fluctuations, supporting SIL 2 safety loops and minimizing unplanned downtime.</p>
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Description

The YOKOGAWA PW301 is a robust redundant power supply module designed for Yokogawa’s CENTUM CS 3000 and CENTUM VP Distributed Control Systems (DCS), delivering critical 5VDC/24VDC power to controllers, I/O modules, and communication networks in mission-critical process industries. Engineered for 24/7 reliability in harsh environments like refineries, power plants, and offshore platforms, the PW301 features dual-input AC/DC compatibility with automatic load sharing and seamless failover (<5>YOKOGAWA PW301 maintains system integrity during grid fluctuations, supporting SIL 2 safety loops and minimizing unplanned downtime.

YOKOGAWA PW301

Technical Specifications

Parameter Name Parameter Value
Product Model PW301
Manufacturer Yokogawa
Product Type Redundant Power Supply Module
Input Voltage 85–264 VAC / 88–300 VDC (Auto-ranging)
Output Voltage 5 VDC ±1% (Logic), 24 VDC ±1% (Field)
Max Output Current 5VDC: 40A (200W), 24VDC: 5A (120W)
Redundancy 1+1 Active Parallel
Efficiency 88% @ full load
Transfer Time <5>
Protections Overcurrent, Overtemperature, Short-Circuit
Operating Temperature -40°C to +70°C
Cooling Method Convection (Fanless)
MTBF 300,000 hours (IEC 61709)
Safety Certification SIL 2 (IEC 61508), TÜV
Isolation 3,000 VAC input-to-output
Dimensions 130 x 60 x 200 mm (H x W x D)

Main Features and Advantages

Fault-tolerant architecture: Dual independent power conversion paths with cross-monitoring ensure zero-interruption power delivery. The PW301’s precision current-sharing (±3%) prevents module overload and extends service life in unbalanced loads.

Maintenance efficiency: Hot-swappable design allows module replacement without system shutdown. Integrated LED indicators (Power OK, Fault) and dry-contact alarms enable rapid fault localization, reducing MTTR by 70%.

Environmental resilience: Aluminum housing with IP20 rating and conformal coating (IPC-CC-830B) resists corrosion in H₂S-rich refineries or coastal installations. Complies with IEEE 1613 for surge immunity (6 kV) and EN 61000-6-4 for EMI.

Application Field

The YOKOGAWA PW301 secures critical DCS infrastructure:

 

Oil & Gas: Powers offshore platform safety controllers (ESD) and subsea control modules.

 

Power Generation: Supplies turbine protection systems and boiler burner management (BMS).

 

Chemical: Backs reactor temperature interlocks and SIL 2 shutdown valves.

 

Water Treatment: Ensures uninterrupted SCADA operation during grid instability.
In LNG plants, it withstands -40°C cold starts while powering cryogenic instrumentation.

YOKOGAWA PW301

Related Products

 

PW302: Higher-capacity variant (5VDC: 60A, 24VDC: 10A).

 

CP401: CENTUM CS 3000 Controller powered by PW301.

 

AFR109: Analog I/O module compatible with PW301-powered racks.

 

AJ65SBTB1-16D: Digital I/O module for CENTUM VP.

 

Yokogawa AIP711: Power supply monitor with HMI integration.

 

 

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