



Product Introduction
The Yokogawa PW301 Power Supply Module is a widely used industrial-grade power unit designed for Yokogawa CENTUM CS 3000 and CENTUM VP Distributed Control Systems (DCS). It provides stable, regulated DC power to critical system components such as I/O modules, controllers, and communication interfaces.
Engineered for continuous industrial operation, the PW301 is known for its reliability, redundancy compatibility, and robust performance in demanding process automation environments such as oil & gas, petrochemical, and power generation facilities.
It remains one of the most recognized legacy power modules in Yokogawa’s DCS ecosystem, especially in long-life installed systems.
Technical Specifications
| Parameter | Specification |
|---|
| Model | PW301 |
| Module Type | Power Supply Module |
| Input Voltage | 100–240 V AC (universal range) |
| Input Frequency | 50/60 Hz |
| Input Current | ~6 A |
| Output Voltage | 5.1 V DC / 24 V DC (system dependent) |
| Output Current | Up to 15 A |
| Output Power | ~150 W–230 W (variant dependent) |
| Efficiency | Industrial high-efficiency design |
| Protection Features | Overvoltage, overcurrent, short circuit protection |
| Isolation | Reinforced electrical isolation |
| Operating Temperature | 0°C to +55°C |
| Storage Temperature | -20°C to +70°C |
| Dimensions (H×W×D) | ~279 × 102 × 279 mm |
| Weight | Approx. 3.3 kg |
| Mounting Type | Rack-mounted DCS module |
Industrial Applications
The PW301 is widely deployed in industrial environments where continuous and stable power is essential for process control systems:
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Oil & gas refining and production facilities
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Petrochemical and chemical processing plants
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Power generation and utility control systems
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Water treatment and infrastructure automation
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CENTUM-based distributed control system cabinets
Its ability to support multiple I/O loads makes it a core power backbone in large-scale control architectures.
Technical FAQs
1. What is the main function of the PW301?
It provides regulated DC power to Yokogawa DCS control and I/O modules.
2. Is it still in active production?
No, it is considered a legacy module and is mainly used in existing systems.
3. What systems is it compatible with?
It is used in CENTUM CS 3000 and CENTUM VP systems.
4. What is the output voltage?
Typically 5.1 V DC and/or 24 V DC depending on system configuration.
5. What is its output capacity?
Up to approximately 150–230 W depending on variant.
6. Does it support redundancy?
Yes, it can be used in redundant power configurations.
7. What is the input voltage range?
100–240 V AC universal input.
8. What is its weight?
Around 3.3 kg depending on configuration.
9. Is it suitable for harsh environments?
Yes, it is designed for industrial temperature and electrical noise conditions.
10. Why is it still widely used today?
Because many industrial plants still operate long-life Yokogawa DCS systems requiring compatible spare modules.