Description
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YOKOGAWA PW441-10
YOKOGAWA PW441-10
Key Technical Specifications
- Part Number: PW441-10
- Rated AC Input: 100–120 VAC, 50/60Hz
- Operating Input Range: 80–132 VAC
- Output Rails: +5.1V DC for logic, +24V DC for internal I/O, additional ±15V auxiliary outputs
- Protection: Overvoltage (OVP), Overcurrent (OCP), Overtemperature (OTP), short-circuit protection (SCP)
- Redundancy: Supports 1+1 redundant pairing; instant load transfer without system reset
- Cooling: Natural convection (no fan)
- Operating Temperature: 0°C ~ +55°C
- Relative Humidity: 5%–95% non-condensing
- Mounting: Dedicated power slot in AFV30 / AFV40 FCS rack
- Weight: Approx. 1.0 kg
- Compatibility: Yokogawa CENTUM CS3000 and CENTUM VP Field Control Stations
YOKOGAWA PW441-10
YOKOGAWA PW441-10
Product Introduction
The YOKOGAWA PW441-10 is a purpose-built power supply module for the AFV30 and AFV40 field control stations within the CENTUM DCS platform, widely deployed in petrochemical, power, refining and water treatment plants.
The “-10” suffix defines the 100–120V AC input variant. Two PW441-10 units are commonly installed in the same FCS rack for redundant power architecture. If one supply loses input power or suffers internal failure, the healthy unit takes the full load seamlessly, avoiding controller trip and process shutdown. This module uses passive natural cooling, eliminating fan wear and reducing long-term maintenance needs.
This is legacy DCS hardware; original new OEM production has ended. For cross-border shipment, prepare datasheets and bench test certificates for global procurement portals and customs databases to reduce inspection delays.
YOKOGAWA PW441-10
QC, Procurement & Logistics SOP
- Inbound Verification: Inspect front panel labeling, connector terminals and PCB for burn marks or capacitor swelling. Confirm part suffix PW441-10 (100-120V AC version, not higher voltage variant).
- Live Rig Testing: Install in AFV30/AFV40 rack; apply rated AC input, verify all DC output voltages are within tolerance. Test redundant failover by cutting AC to one module, confirm bumpless transfer and alarm indication.
- QA & Anti-Static Packaging: Secure power module in rigid foam, seal inside ESD shielding bag to protect internal power semiconductors during transit.
- Global Logistics & Export Compliance: Use correct HS code for industrial control power supplies. Reinforced carton packaging for air or sea freight; include test report and datasheet for customs review.
YOKOGAWA PW441-10
Technical Pitfalls & Integration Warnings
- Model Suffix Mix-Up. PW441-10 is 100–120V AC input. Other PW441 variants accept 200–240V AC. Installing wrong input variant will cause immediate module failure.
- Redundancy Configuration Rules. Redundant operation requires two identical -10 modules and proper rack wiring. Mismatched power supply revisions may break failover functionality.
- Capacitor Aging Risk. Electrolytic capacitors degrade over years of service. A unit may pass static voltage testing but fail under full thermal load after warm-up. Refurbished units should have capacitor health validated.
- Ambient Temperature Limits. Max operating temperature +55°C. Poor cabinet ventilation causes over-temperature shutdown and premature hardware aging.
- ESD and Surge Risks. Input surge from unstable mains can damage the front-end rectifier circuit. External surge protection is recommended at the rack AC feed.
Frequently Asked Questions (FAQ)
What global lead times apply for YOKO? Stock-on-hand units can ship in 1–3 business days. Final delivery lead time depends on destination; remote industrial regions can extend full transit to 14–22 calendar days.
Can I hot- while the FCS rack remains powered? Hot replacement is allowed in redundant 1+1 configuration. Confirm the second power module is healthy before removal; never remove the only active power supply while the DCS controller is running.
What DCS racks work ? It is designed exclusively for Yokogawa AFV30 and AFV40 Field Control Stations for CENTUM CS3000 and CENTUM VP. It will not fit other Yokogawa FCS models.
Is backward compatibility guaranteed? Physically fits AFV30/AFV40 slots. Verify hardware revision before drop-in replacement and perform bench redundancy testing before live process commissioning.
What protection features are built ? Overvoltage, overcurrent, overtemperature and short-circuit protection. Fault status is indicated via front panel LED alarm.
Is field repair available? OEM component sourcing for aged power modules is limited. Direct module replacement is the recommended low-risk option for critical process control racks.
What pre-installation checks should be completed?
- Confirm su for correct AC input rating
- Inspect PCB for swollen/leaking capacitors or burn traces
- Verify DC output voltages under full load
- Validate redundant failover function in rack test setup
- Check cabinet ventilation to stay below 55°C ambient
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