PW481-50 Yokogawa CENTUM VP Power Supply Module

PW481-50 Yokogawa CENTUM VP Power Supply Module

Model: PW481-50  

Brand: Yokogawa

Core Function:CENTUM VP Power Supply Module

Condition: New Original (New Surplus) / Factory Sealed

Origin: USA

Delivery time: 3 days

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Category: SKU: PW481-50 CENTUM

Description

PW481-50

Yokogawa CENTUM VP Power Supply Module

Product Summary

PW481-50 is a rack-mounted switching power supply unit tailor-made for Yokogawa CENTUM VP distributed control system. It is installed inside Field Control Unit (FCU) racks and FIO node units, converting AC mains into stabilized internal DC power to feed controllers, I/O boards and ESB bus communication hardware. Two PW481-50 modules can be deployed for dual redundant configuration. Load sharing and seamless automatic switchover guarantee uninterrupted power supply, avoiding system shutdown caused by single power module failure. Widely adopted for new DCS construction and spare part replacement of legacy CENTUM VP automation cabinets.

Standout Characteristics

• Supports simplex and dual redundant running modes; hot-swap maintenance without powering down the control rack

• Precision voltage regulation suppresses output fluctuation amid grid voltage surge and transient disturbance

• Built-in multi-tier protection: overvoltage, overcurrent, short-circuit lockout and thermal shutdown

• Fanless natural convection architecture removes vulnerable moving components, lowering long-term maintenance burden

• Front panel LED indicators clearly display power status and fault alarms for quick on-site troubleshooting

• PCB conformal coating improves resistance against humidity, dust and corrosive atmosphere inside industrial control rooms

• Specialized backplane connector design ensures stable power transmission under cabinet vibration

• Perfect compatibility with AFV30, AFV40, A2FV50, A2FV70 series FCU and ANB10/ANB11 FIO node units

PW481-50

Technical Specifications

Item Specification
Model PW481-50
Manufacturer Yokogawa Electric
Product Type DCS Rack Power Supply Module
Input 100–120 V AC, 50/60 Hz
Rated Power Consumption 200 VA
Applicable Rack CENTUM VP FCU, FIO Node Unit, Optical ESB Repeater
Redundancy Support Dual redundant load sharing
Cooling Mode Natural convection, fanless
Operating Temperature -20 ℃ ~ +70 ℃
Storage Temperature -40 ℃ ~ +85 ℃
Relative Humidity 5% – 95% RH, non-condensing
Mounting Plug-in slot installation inside control rack
Weight Approx. 1.0 kg

Installation & Commissioning Guidelines

Cut off all rack power before installing or replacing the module. Wear anti-static wrist strap to prevent electrostatic damage to internal circuits. Insert PW481-50 into the dedicated power slot and lock firmly to maintain reliable backplane contact.
For redundant configuration, install two identical modules and connect independent AC input power sources to eliminate single-point risk on the upstream power side. Separate power cables and communication wiring to reduce electromagnetic interference. Complete protective grounding following official wiring standards.
After wiring inspection, power on step by step. Verify indicator status and confirm stable power delivery to all rack modules. Simulate single power module failure to test automatic switchover performance of redundant system.
After commissioning acceptance, add periodic inspection items. Regularly check module operating temperature, connector tightness and remove accumulated dust to sustain long-term stable power output.

Main Application Scenarios

Petrochemical & Refining Plants

Power supply for CENTUM VP control racks of reaction, distillation and separation process units.

Thermal & Combined Cycle Power Plants

Support boiler, turbine auxiliary control systems and flue gas treatment DCS hardware.

Oil & Gas Onshore Production Facilities

Distributed control system power for compressor stations and pipeline monitoring stations.

Pharmaceutical & Fine Chemical Manufacturing

Continuous and batch production automation control cabinet power infrastructure.

DCS System Upgrade & Spare Part Retrofit Projects

Direct replacement for aging power modules of existing CENTUM VP racks.

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