YOKOGAWA – PW481-50 Power Supply Module, STYLE 2 2015.04 – P/N: PW481-50 S2

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The PW481-50-S2 is a high-efficiency power supply module designed for Yokogawa’s CENTUM VP and ProSafe-RS control systems. It provides 24V DC power to Field Control Stations (FCS), I/O modules, and communication units, ensuring stable operation in industrial environments.

SKU: YOKO-PW48150S2

Price:

Key Features

Power Specifications

Input Voltage: 100–240V AC (50/60 Hz) or 125V DC (optional)
Output Voltage: 24V DC (±1% regulation)
Output Current: 10A (continuous, 50°C derating)
Efficiency: >85% (typical)
Redundancy: Supports parallel operation with another PW481 for N+1 backup

Protection & Diagnostics

Overload Protection: Auto-reset after fault clearance
Overvoltage/Undervoltage Shutdown: Safeguards connected equipment
LED Indicators: Power status (AC/DC input, output, fault)
Hot-Swappable: Replace without system shutdown (in redundant setups)

Compatibility

Systems: CENTUM VP, ProSafe-RS, and FIO (Field I/O) units
Enclosures: Fits standard Yokogawa racks (e.g., ARR11x series)

Environmental

Operating Temperature: -20°C to +70°C
Certifications: CE, UL, and IEC 61010-1 compliant

Suffix Code Breakdown (PW481-50-S2)

Suffix	Description
-50	Standard AC/DC input range
-S2	Style 2 (2015 hardware revision)
-E	Explosion-proof variant (e.g., PW481-50-E)

Note:

Style 2 (S2): Includes improved thermal management vs. older revisions.
For DC-only input, check model PW481-51.

Typical Applications

DCS Power Backup: Redundant power for Field Control Stations (FCS)
I/O Module Power: Supplies AAI141, AAR145, and other FIO modules
Safety Systems: ProSafe-RS power redundancy

Installation & Wiring

Mounting: Install in designated power supply slots of Yokogawa racks.
Wiring:
- AC Input: Use shielded cables for noise immunity.
- DC Output: Connect to power distribution terminals.
Redundancy:
- Parallel with a second PW481 using load-sharing cables.