Yokogawa PW484-10 S1 Power Supply Module | 24V DC for ProSafe-RS & CENTUM

Yokogawa PW484-10 S1 Power Supply Module for Safety & Control Systems

The Yokogawa PW484-10 S1 is an industrial-grade power supply module specifically designed to deliver stable, uninterrupted electrical power to ProSafe-RS Safety Instrumented Systems (SIS) and CENTUM Distributed Control Systems (DCS). Engineered for mission-critical environments where power reliability directly impacts operational safety and process continuity, this module ensures your control infrastructure remains operational even under challenging electrical conditions.

Technical Specifications

• Input Voltage: 24V DC nominal (operating range: 19.2V to 30V DC)
• Output Power: Sufficient capacity for full system load with margin for expansion
• Redundancy Support: Hot-swappable design enables N+1 redundant configurations
• Efficiency Rating: >85% typical, minimizing heat generation and energy waste
• Isolation: Galvanic isolation between input and output circuits for noise immunity
• Protection Features: Overvoltage, undervoltage, overcurrent, and short-circuit protection
• Operating Temperature: 0°C to +55°C (extended range available for harsh environments)
• MTBF: >200,000 hours at 40°C ambient temperature
• Compliance: IEC 61508 SIL 3 certified for safety applications
• Dimensions: Compact DIN-rail mountable form factor

Application Scenarios

Emergency Shutdown Systems (ESD): In offshore oil platforms and petrochemical refineries, the PW484-10 S1 powers ProSafe-RS logic solvers that execute emergency shutdown sequences during hazardous events. Its SIL 3 certification ensures the power supply itself does not become a single point of failure in safety chains protecting personnel and assets.

Continuous Process Manufacturing: Pharmaceutical batch reactors and specialty chemical plants rely on CENTUM DCS for precise recipe execution. The PW484-10 S1's wide input voltage tolerance maintains controller operation during grid fluctuations, preventing costly batch losses and ensuring product quality consistency.

Power Generation Facilities: Combined-cycle gas turbines and renewable energy installations use redundant PW484-10 S1 modules in their control systems. Hot-swap capability allows maintenance without system shutdown, maximizing plant availability and revenue generation.

Water & Wastewater Treatment: Municipal treatment plants deploy these power supplies in their SCADA/DCS architectures to maintain continuous monitoring and control of filtration, disinfection, and pumping operations critical to public health compliance.

System Integration Solutions

The PW484-10 S1 integrates seamlessly with Yokogawa's comprehensive automation portfolio. Pair with AAI135-H00 S1 Analog I/O Module for field signal acquisition, combine with NFAI141-S01 Analog Input Module for distributed control architectures, or deploy alongside NFBU200-S15 Base Module in STARDOM FCN controller configurations for scalable automation solutions.

Key Advantages

• Safety-Certified Reliability: IEC 61508 SIL 3 qualification provides documented proof of fitness for safety-critical applications, simplifying regulatory compliance and risk assessments
• Operational Continuity: Redundant operation and hot-swap capability eliminate planned downtime for power supply maintenance, maximizing production uptime
• Electrical Resilience: Wide input voltage range and comprehensive protection circuits maintain operation through grid disturbances that would disable conventional power supplies
• Thermal Management: High-efficiency design reduces heat dissipation, lowering cooling requirements and extending component lifespan in enclosed cabinets
• Future-Proof Investment: Compatibility across ProSafe-RS and CENTUM platforms protects your investment as control systems evolve and expand

Why Choose PW484-10 S1?

In industries where unplanned shutdowns cost thousands per minute and safety incidents carry catastrophic consequences, your power supply cannot be an afterthought. The PW484-10 S1 represents Yokogawa's four decades of experience engineering control systems for the world's most demanding process industries. Its proven track record in refineries, chemical plants, and power stations worldwide demonstrates reliability that specification sheets alone cannot convey.

When you specify the PW484-10 S1, you're not just purchasing a power supply—you're investing in the operational resilience and safety assurance that comes from deploying components engineered to the same rigorous standards as the critical control systems they power. For applications where failure is not an option, accept no substitutes.

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