Stabilized 5.1V DC Power Source for CENTUM VP and CS3000 DCS Systems
The PW402 serves as a dedicated system power supply within Yokogawa’s CENTUM distributed control platforms. Engineers deploy this module to energize CPU cards, communication buses, and I/O modules across process control racks. Consequently, the unit delivers stable DC voltage for continuous, uninterrupted plant operation.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | PW402 (Style S2) |
| Manufacturer | Yokogawa Electric |
| Product Type | System Power Supply Module |
| Compatible Systems | CENTUM VP, CENTUM CS3000, μXL |
| Input Voltage | 100–240V AC, 50/60 Hz |
| Output Voltage | +5.1V DC (fixed) |
| Maximum Output Current | 20 A |
| Rated Output Power | 102 W |
| Voltage Regulation | ±0.5% full scale |
| Power Factor | ≥0.95 (Active PFC) |
| Cooling Method | Fan-cooled |
| Operating Temperature | 0°C to +50°C |
| Protection Class | IP20 |
| Weight | 2.0 kg |
| Dimensions (H×W×D) | 5.1 × 22.9 × 20.3 cm |
| Origin | Japan / Singapore |
Power Conversion and Output
The PW402 converts wide-range AC input into a regulated +5.1V DC rail for the DCS backplane. Its 20-amp output capacity supports fully populated racks with CPU, communication, and I/O modules. Therefore, engineers can distribute clean power across multiple cards without external boosters.
Redundancy and Reliability
Dual-redundant configurations allow the PW402 to operate alongside a second module for fault tolerance. If one unit fails, the backup seamlessly assumes the full load without process interruption. This design suits critical applications in petrochemical, power generation, and pharmaceutical plants.
Protection and Diagnostics
Onboard circuits guard against overvoltage, undervoltage, overcurrent, and short-circuit events. Front-panel LED indicators display output rail health and internal regulation status. Additionally, active power factor correction maintains efficiency above 95% under normal operating conditions.
Details
| Weight | 0.35 kg |
|---|---|
| Dimensions | 120 × 52 × 125 mm |
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