The Yokogawa PW402-S2 power supply module is a highly reliable and efficient power conversion unit designed for Yokogawa’s CENTUM VP and other distributed control systems (DCS). It serves as a critical component that provides stable and continuous DC power required for various system modules such as CPUs, analog and digital I/O modules, and communication interfaces.

Engineered to deliver high performance under demanding industrial conditions, the PW402-S2 supports both high current capacity and robust protection features, ensuring operational continuity even in harsh environments. This power supply module supports redundant configurations, allowing seamless power failover to maintain uninterrupted system operation.

Its compact form factor and flexible installation options allow it to integrate smoothly into existing control cabinets while providing enhanced energy efficiency and reduced maintenance requirements. The module’s design adheres to stringent international standards, making it suitable for use in diverse industries including petrochemical, power generation, pharmaceuticals, and water treatment.

Technical Specifications

Applications

• Primary power source for Yokogawa CENTUM VP DCS components

• Powering control CPUs, I/O modules, and interface cards in industrial control systems

• Redundant power configurations in critical infrastructure and safety systems

• Power supply for process automation in chemical, petrochemical, and oil & gas plants

• Reliable DC power delivery in power generation and distribution control centers

• Continuous operation power source in water treatment and environmental control systems

• Use in pharmaceutical manufacturing process control for consistent system uptime

Advantages

• Dual Output Voltage: Provides both 5 VDC and 24 VDC outputs catering to a wide range of devices

• Redundancy Compatibility: Supports parallel connection for N+1 redundancy, enhancing system availability

• High Efficiency: Reduces power losses and heat generation, contributing to operational cost savings

• Robust Protection Features: Integrated protection against overload, short circuit, and overheating

• Hot-Swappable Design: Facilitates module replacement without shutting down the entire control system

• Global Power Compatibility: Operates across a wide AC input voltage range for worldwide deployment

• Compact and Modular: Designed to fit standard racks, optimizing cabinet space and simplifying maintenance

• Real-time Status Monitoring: LED indicators provide clear visual feedback on power and fault conditions

Frequently Asked Questions (FAQ)

Q1: What voltages does the PW402-S2 provide?

A1: The module outputs dual voltages: 5 VDC and 24 VDC, suitable for powering various system components.

Q2: Is the PW402-S2 compatible with redundant power configurations?

A2: Yes, it supports parallel operation for redundancy to ensure uninterrupted power supply.

Q3: Can the power supply module be replaced without shutting down the system?

A3: Yes, the module is designed to be hot-swappable.

Q4: What protections are built into the PW402-S2?

A4: It includes overload, short circuit, and thermal protection with automatic recovery.

Q5: What is the input voltage range supported by this module?

A5: It supports an auto-selectable input voltage range from 100–120 VAC or 220–240 VAC.

Q6: How efficient is the PW402-S2?

A6: It typically operates with greater than 85% efficiency.

Q7: What cooling mechanism does it use?

A7: The module uses natural convection combined with an internal fan.

Q8: What are the dimensions and weight of the PW402-S2?

A8: Dimensions are 280 x 100 x 280 mm, and it weighs 3.26 kg.

Q9: What indicators are available to monitor the power supply status?

A9: The module features LEDs indicating power status, faults, and redundancy status.

Q10: Which industries commonly use this power supply module?

A10: It is widely used in petrochemical, power generation, pharmaceutical, and water treatment industries.