Product Introduction
The Yokogawa PW302 Power Supply Module is a robust industrial power unit widely used in Yokogawa CENTUM Distributed Control Systems (DCS). It is designed to deliver stable and regulated DC power to controllers, I/O modules, and communication components, ensuring continuous and reliable operation in critical automation environments.
Known for its long service life and system compatibility, the PW302 is commonly deployed in oil & gas, petrochemical, and power generation facilities where uninterrupted control system performance is essential.
Technical Specifications
| Parameter | Specification |
|---|
| Model | PW302 |
| Module Type | Power Supply Module |
| Input Voltage | 100–120 V AC / 220–240 V AC (variant dependent) |
| Input Frequency | 50/60 Hz |
| Input Current | ~1.25–2.6 A (depending on voltage) |
| Output Voltage | +5.1 V DC / +12 V DC (system dependent) |
| Output Current | Up to 20 A (5.1 V rail), ~3 A (12 V rail) |
| Output Power | ~200–230 VA |
| Efficiency | Up to ~86% |
| Protection Features | Overvoltage, overcurrent, short-circuit protection |
| Redundancy Support | Yes (dual power configuration capable) |
| Operating Temperature | 0°C to +50°C |
| Storage Temperature | -20°C to +70°C |
| Dimensions (H×W×D) | 102 × 279 × 254 mm |
| Weight | ~3.3–3.6 kg |
| Mounting Type | Rack-mounted DCS module |
Industrial Applications
The PW302 is widely used in industrial automation systems requiring stable and redundant power distribution:
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Oil & gas production and refining systems
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Petrochemical processing plants
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Power generation and utility control systems
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Large-scale manufacturing automation
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CENTUM CS / CENTUM VP DCS installations
It is especially valuable in legacy systems where long-term stability and compatibility are critical.
Technical FAQs
1. What is the main function of the PW302?
It supplies regulated DC power to Yokogawa DCS control and I/O modules.
2. Is it still used in modern systems?
It is mainly used in existing CENTUM installations and maintenance environments.
3. What output voltages does it provide?
Typically +5.1 V DC and +12 V DC depending on system configuration.
4. What is its maximum output current?
Up to ~20 A on the main 5.1 V rail.
5. Does it support redundancy?
Yes, it can be configured in redundant power setups.
6. What is the input voltage range?
100–120 V AC or 220–240 V AC depending on model variant.
7. What is its typical weight?
Around 3.3–3.6 kg depending on configuration.
8. What industries commonly use it?
Oil & gas, petrochemical, power generation, and large-scale manufacturing.
9. Is it suitable for harsh environments?
Yes, it is designed for industrial temperature and electrical noise conditions.
10. Why is it still widely supported?
Because many long-life Yokogawa DCS installations continue to rely on PW302-based architectures.
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