Redundant 5.1V DC Supply for CENTUM VP and CS3000 DCS Racks
The PW402 S2 serves as a dedicated power module within Yokogawa’s CENTUM distributed control platforms. Engineers deploy this Style S2 unit to energize CPU cards, communication buses, and I/O modules across process control racks. Consequently, the module delivers stable DC voltage for continuous plant operation in petrochemical and power facilities.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | PW402 S2 |
| Manufacturer | Yokogawa Electric |
| Product Type | Power Supply Module (Style S2) |
| 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% of Full Scale |
| Power Factor | ≥0.95 with Active PFC |
| Cooling Method | Forced Air, Fan-Cooled |
| Operating Temperature | 0°C to +50°C |
| Storage Temperature | -20°C to +70°C |
| Protection Class | IP20 |
| Weight | 2.0 kg |
| Dimensions (H×W×D) | 5.1 × 22.9 × 20.3 cm |
Power Conversion and Output
The PW402 S2 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 cards. Therefore, engineers can distribute clean power across multiple modules without external boosters.
Redundancy and Reliability
Dual-redundant configurations allow this module to operate alongside a second unit for fault tolerance. If one supply fails, the backup 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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