Yokogawa SPW481-13-S1 Power Supply Module 100-120V AC

Yokogawa SPW481-13-S1 Power Supply Module - Reliable AC Power for Safety-Critical Systems

The Yokogawa SPW481-13-S1 is a high-performance power supply module engineered to deliver stable 100-120V AC power for ProSafe-RS safety instrumented systems and CENTUM VP distributed control platforms. Designed for mission-critical industrial environments, this module ensures uninterrupted operation in oil & gas, chemical processing, power generation, and pharmaceutical manufacturing facilities.

Technical Specifications

• Model: SPW481-13-S1
• Input Voltage: 100-120V AC, 50/60 Hz
• Output Power: Regulated DC output for system modules
• Compatibility: ProSafe-RS SIS, CENTUM VP/CS 3000 DCS
• Redundancy: Supports dual power supply configurations
• Operating Temperature: 0°C to +55°C (32°F to 131°F)
• Mounting: DIN rail or rack-mount installation
• Certifications: IEC 61508 SIL 3, FM, CSA, ATEX compliant

Application Scenarios

This power module is essential for safety-critical applications requiring continuous, fault-tolerant power delivery. In emergency shutdown (ESD) systems, the SPW481-13-S1 maintains power integrity during process upsets, ensuring safety logic solvers remain operational. For distributed control architectures, it provides clean, regulated power to I/O modules, communication interfaces, and controller units across multiple control cabinets.

Refineries deploy this module in redundant pairs to eliminate single points of failure in safety loops. Chemical plants utilize it for burner management systems where power loss could trigger hazardous conditions. Pharmaceutical facilities rely on its stable output for batch control systems that demand precise environmental monitoring and control.

Engineering Solutions

The SPW481-13-S1 integrates seamlessly into existing Yokogawa control infrastructure through standardized backplane connections. Its hot-swappable design enables maintenance without system shutdown, reducing planned downtime. Built-in diagnostics provide real-time status monitoring via LED indicators and system alarms, allowing predictive maintenance strategies.

For brownfield upgrades, this module offers backward compatibility with legacy CENTUM systems while supporting migration paths to modern ProSafe-RS architectures. Its wide input voltage tolerance accommodates power quality variations common in industrial facilities, while surge protection circuitry guards against electrical transients.

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