Description

Product Overview

The Yokogawa PW301 S4 is a robust, industrial-grade power supply module engineered to provide stable and reliable DC voltage to Yokogawa distributed control systems (DCS). This module serves as the primary energy source for rack-mounted components, ensuring that critical process controllers and I/O modules remain powered during demanding industrial operations.

Reliable Energy Delivery and Protection

The PW301 S4 converts standard 100-120V AC utility power into high-integrity DC outputs required by sensitive automation hardware. While it supports a primary 5.1V DC output for internal logic, it also facilitates a 24V DC rated output to power peripheral field devices. To safeguard the broader automation ecosystem, Yokogawa integrated advanced overcurrent and overvoltage protection circuits into the S4 revision. These safety features prevent electrical faults from cascading through the system, thereby protecting expensive processor cards and communication interfaces from permanent damage.

Operational Resilience and Performance

This module excels in maintaining system uptime during minor power fluctuations. With a 20ms holdup time, the PW301 S4 allows the system to ride through brief voltage dips without triggering a controller reset or process trip. This resilience is vital in plants where even a momentary power loss can lead to hours of downtime. Furthermore, the unit operates efficiently within a wide temperature range of 0 to 60°C. Its substantial 2.05kg build acts as an effective heat sink, allowing for natural convection cooling and ensuring long-term component life in sealed industrial cabinets.

Versatile System Integration

As a core component of the Yokogawa power infrastructure, the PW301 S4 is designed for easy installation and maintenance. The module fits seamlessly into standardized power supply slots, making it an ideal choice for both new facility builds and the maintenance of legacy installations. Because this module supports a maximum power output of 142W when paired with an optional battery backup, it provides a scalable solution for varying rack loads. This flexibility, combined with its Japan-based precision manufacturing, makes the PW301 S4 a trusted standard in oil and gas, chemical, and power generation facilities worldwide.

Technical Characteristics