Technical Overview
The Yokogawa PW401 serves as a high-capacity power supply module for the CENTUM VP and ProSafe-RS control systems. This module converts 100–240 VAC input into multiple regulated DC outputs, supporting power-hungry backplane configurations. Its fanless design reduces noise and enhances long-term reliability in demanding industrial environments. The PW401 integrates comprehensive protection features, including overvoltage, overcurrent, and overtemperature safeguards.
Key Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Yokogawa Electric Corporation |
| Product Type | Power Supply Module |
| System Compatibility | CENTUM VP, ProSafe-RS |
| Input Voltage | 100–240 VAC |
| Input Frequency | 50/60 Hz |
| Output Voltage | 5 VDC / 24 VDC / 48 VDC |
| Output Current | 20 A (5 V) / 5 A (24 V) / 2 A (48 V) |
| Efficiency | ≥ 88% |
| Power Dissipation | 55 W (typical) |
| Inrush Current | ≤ 25 A (at 240 VAC) |
| Hold-up Time | 20 ms |
| Protection Features | Overvoltage, overcurrent, overtemperature, short-circuit |
| Dimensions (H x W x D) | 150 x 60 x 140 mm |
| Weight | 1.2 kg |
| Operating Temperature | -10°C to +60°C |
| Storage Temperature | -25°C to +75°C |
| Protection Class | IP20 |
| Certifications | CE, CSA, UL, TÜV |
High-Capacity Power Delivery
The Yokogawa PW401 delivers substantial current across three output rails, supporting complex systems with multiple cards. Its 20 A capacity at 5 V accommodates dense I/O configurations, while the 24 V and 48 V rails handle field devices. Furthermore, the 20 ms hold-up time ensures stable operation during brief supply interruptions.
Protection and Thermal Management
This module combines overvoltage, overcurrent, overtemperature, and short-circuit protection for comprehensive fault coverage. The PW401 automatically limits output or shuts down under fault conditions, preventing damage to connected equipment. Its fanless, convection-cooled design eliminates mechanical wear, extending the power supply’s service life in harsh conditions.
Integration and Reliability
The PW401 mounts directly into CENTUM VP and ProSafe-RS chassis, simplifying installation and system expansion. Its high efficiency reduces heat generation, lowering cabinet cooling requirements and operational costs. With its robust construction and wide temperature range, the PW401 ensures reliable performance in critical process industries.
Details
| Weight | 1.2 kg |
|---|---|
| Dimensions | 150 × 60 × 140 mm |
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