Description
1. Unboxing & Physical Snapshot
- Model & Brand: Yokogawa — PW484-50 (CENTUM VP / FIO 24 VDC Power Supply Module)
- Physical Dimensions: Approximately 199.5 mm x 49.7 mm x 146.5 mm (standard modular plug-in card-cage layout format).
- Estimated Shipping Weight: 1.0 kg (2.2 lbs) packed with heavy structural industrial foam inserts.
- What’s in the Box: PW484-50 power supply module unit, factory inspection sign-off tag, terminal safety cover, and compliance insert (note: node backplanes and external DC distribution cabling are ordered separately).
2. Product Introduction
Uninterrupted power distribution across distributed control node architectures requires robust conversion layers designed to handle unstable plant direct-current buses. Operating as a dedicated power source within Yokogawa CENTUM VP and CS 3000 systems, this module accepts raw 24 VDC plant power and converts it into tightly regulated internal rails for downstream processor and I/O cards (—which prevents logic brownouts during primary battery-backup transitions).
Engineered with specialized internal overcurrent protection circuits and rugged thermal management fins, the unit maintains steady power output under continuous high-load operations. Plant instrumentation engineers rely on this exact hardware model to preserve absolute system availability across continuous processing facilities and remote terminal shelters.
3. Core Technical Specifications
| Parameter | Value |
| Module Type | 24 VDC Input Power Supply Module (CENTUM VP / FIO) |
| Input Power Voltage | 24 VDC (\pm10\%) nominal input |
| Maximum Power Consumption | 5.5 A operational draw |
| Compatible Units | Field Control Units (FCU), FIO Node Units, Optical ESB Bus Repeaters |
| Slot Assignment | Dedicated P1 or P2 power supply bays |
| Operating Temperature | 0^\circC to +50^\circC (Standard configuration) |
| Storage Temperature | -40^\circC to +85^\circC |
| Country of Origin | Japan |
4. Global Compliance & Industry Certifications
Compliance audits stall immediately when power distribution hardware lacks verifiable regional safety documentation.
- Certifications: CE Mark, cULus Listed industrial control equipment, and RoHS environmental directives.
- Safety Relevance: The UL industrial control standards ensure that primary circuit failures cannot trigger internal electrical fires or propagate dangerous voltage spikes to low-voltage internal logic buses.
- Audit Note: Verify specific serial lot certificates against local statutory electrical codes prior to final authority having jurisdiction (AHJ) plant power-up.
5. Long-Term Storage & Asset Preservation Guide
Spare power supply units housed in warehouse stockrooms face capacitor aging and terminal oxidation over extended durations (—requiring careful environmental management to protect capital inventory). Preserve your investment by following these maintenance procedures:
- Maintain warehouse climate control where ambient storage temperatures stay between -20^\circC and +55^\circC while keeping relative humidity strictly below 60% to prevent internal moisture accumulation.
- Keep the module sealed inside its original factory anti-static barrier bag with active desiccant pouches until the exact panel integration window.
- Inspect the heavy-duty input terminal screw blocks and internal cooling vents annually for dust accumulation, brushing surfaces gently with clean, dry compressed air if necessary.
6. Physical Installation Prerequisites
Proper mechanical and thermal layout inside the control cabinet prevents localized heat trapping and input terminal degradation.
- Clearance Space: Leave at least 100 mm of unobstructed vertical space above and below the node chassis to allow proper convective airflow across the module cooling fins.
- Redundancy Configuration: For dual-redundant power setups, install two identical PW484-50 modules into both the P1 and P2 slots simultaneously.
- Torque Specifications: Tighten power wiring terminal screws strictly to manufacturer guidelines (typically 1.2 to 1.5 Nm) to prevent loose connections under high vibration.
7. Buyer’s FAQ (Logistics & Compliance Focus)
Q: What is the correct Harmonized System (HS) Tariff Code for international customs clearance?
A: Industrial control power supply units and static converters typically classify under HS code 8504.40.9580 (Static converters: Other). Always verify final codes with your customs broker.
Q: Does this power module require factory firmware programming prior to field insertion?
A: No. As a hardware power conversion unit, it operates autonomously based on hardwired input voltages without software logic storage.
Q: What are the trade compliance implications of the Country of Origin (COO)?
A: This hardware is manufactured in Japan, requiring precise country declarations on commercial export and import invoices to satisfy regional trade regulations.
Q: Is specialized shock-resistant transit insurance required for international shipping?
A: Yes, because internal heavy transformers and electrolytic capacitors are vulnerable to drop impacts, full-value freight insurance is strongly recommended.
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