YOKOGAWA NFPW442-10

Description

1. Product Overview

2. Product Parameters

2.1 Core Power Specifications

• Input Voltage: 100-240V AC (50/60Hz), wide-range universal input
• Output Voltage: 24V DC (adjustable ±1%), dual redundant output channels
• Output Current: 10A per channel (20A total for redundant configuration)
• Efficiency: ≥92% (at full load), reducing energy consumption and heat generation
• Ripple & Noise: ≤50mV p-p (24V output), ensuring clean power for sensitive electronics

2.2 Electrical & Protection Features

• Redundancy: 1+1 hot standby configuration (automatic switchover <5ms)
• Protection Mechanisms: Overvoltage protection (OVP), overcurrent protection (OCP), overheating protection, short-circuit protection
• Isolation Rating: 3000V AC input-to-output, 1500V AC output-to-output
• Power Factor Correction (PFC): Active PFC (≥0.95 at full load), compliant with EN61000-3-2 standards

2.3 Environmental & Mechanical Parameters

• Operating Temperature: -10°C to +60°C (industrial-grade range), derating above 50°C
• Storage Temperature: -25°C to +70°C
• Relative Humidity: 5% to 95% (non-condensing), IP20 protection
• Vibration Resistance: 5-2000Hz, 2g (IEC 60068-2-6, X/Y/Z axes)
• Shock Resistance: 15g (11ms half-sine wave, IEC 60068-2-27)
• Mounting: YOKOGAWA CENTUM VP/ProSafe-RS rack-mounted, hot-swappable (plug-in module)
• Dimensions: 48.3mm (W) × 265mm (H) × 200mm (D), standard 19-inch rack compatibility

2.4 Certifications & Compatibility

• Safety Certifications: SIL 2 (IEC 61508), TÜV Rheinland, ATEX Zone 2 (Ex nA IIC T4)
• Industry Certifications: CE, UL/cUL Class 1 Div 2, FCC Class A, RoHS
• Compatibility: YOKOGAWA CENTUM VP controllers (CP401/CP402), ProSafe-RS SIS modules, YOKOGAWA I/O racks (AAI141, ADV141)
• MTBF: ≥500,000 hours (per Telcordia SR-332 standards)

3. Advantages & Features

1. Redundant Fault Tolerance: YOKOGAWA NFPW442-10 supports 1+1 hot standby configuration with <5ms automatic switchover, ensuring uninterrupted power supply even if one channel fails—critical for safety-critical systems like ProSafe-RS ESD modules.
2. High Efficiency & Low Heat: With ≥92% efficiency at full load, YOKOGAWA NFPW442-10 reduces energy costs and heat dissipation, eliminating the need for additional cooling in control cabinets and extending the lifespan of adjacent components.
3. Comprehensive Protection: OVP, OCP, overheating, and short-circuit protection features safeguard connected DCS/SIS components from power anomalies, preventing damage and ensuring system integrity.
4. Hot-Swappable Design: YOKOGAWA NFPW442-10 is hot-swappable in CENTUM VP/ProSafe-RS racks, allowing module replacement without shutting down the control system—essential for minimizing downtime in continuous production environments.
5. Universal Input & Compliance: The 100-240V AC wide-range input makes YOKOGAWA NFPW442-10 compatible with global power grids, while compliance with SIL 2 and ATEX standards ensures suitability for hazardous and safety-critical applications.

4. Application Fields & Cases

4.1 Application Fields

• Oil & Gas: LNG plant ProSafe-RS safety system power, offshore platform DCS control cabinets, pipeline monitoring system power
• Petrochemical: Refinery CENTUM VP process control power, chemical reactor SIS power, storage tank level monitoring system power
• Power Generation: Thermal power plant boiler control system power, nuclear auxiliary system DCS power, wind farm SCADA system power
• Water & Wastewater: Treatment plant control system power, pump station SIS power, water quality monitoring equipment power

4.2 Typical Cases

1. LNG Plant ProSafe-RS Power Supply: A major Qatari LNG plant deployed YOKOGAWA NFPW442-10 modules in 1+1 redundant configuration to power ProSafe-RS ESD systems across 8 process trains. During a sudden input voltage spike, the module’s OVP protection activated, and the standby channel seamlessly took over, preventing a system shutdown and ensuring continuous emergency shutdown capability.
2. Thermal Power Plant DCS Power: A Chinese thermal power plant integrated YOKOGAWA NFPW442-10 into its CENTUM VP control system to power boiler and turbine controllers. The module’s high efficiency (92%) reduced annual energy consumption by 15% compared to legacy power supplies, while hot-swappable design enabled maintenance during peak load periods without disrupting power generation.
3. Refinery Hydrocracking Unit Power: A U.S. Gulf Coast refinery used YOKOGAWA NFPW442-10 to supply redundant power to I/O modules in a hydrocracking unit. The module’s overheating protection prevented a potential fire hazard during a control cabinet cooling fan failure, and diagnostic alerts allowed maintenance crews to address the issue before it impacted operations.

5. Competitive Comparison

6. Selection Suggestions & Precautions

6.1 Selection Suggestions

1. System Compatibility: Choose YOKOGAWA NFPW442-10 for YOKOGAWA CENTUM VP/ProSafe-RS systems to ensure seamless integration and redundant power support; select competitor modules only if compatibility with non-YOKOGAWA systems is required.
2. Redundancy Needs: Opt for YOKOGAWA NFPW442-10 for safety-critical applications (e.g., ESD, SIS) requiring 1+1 hot standby; non-redundant supplies may be suitable for non-critical process monitoring.
3. Efficiency & Environment: Select YOKOGAWA NFPW442-10 for high-temperature environments or energy-efficient operations; legacy modules may be used for controlled indoor settings with low power demands.

6.2 Precautions

1. Installation Guidelines:
   • Install YOKOGAWA NFPW442-10 in YOKOGAWA CENTUM VP/ProSafe-RS racks only; ensure proper ventilation (minimum 10cm clearance) to prevent overheating.
   • Wire input power to comply with local electrical codes (e.g., NEC Class 1 Div 2 for hazardous areas) and use shielded cables for output connections to reduce noise.
2. Configuration Notes:
   • Configure redundant mode via DCS engineering software (CENTUM VP Engineer Station) to enable automatic switchover and diagnostic monitoring.
   • Set overvoltage/overcurrent protection thresholds to match connected load requirements (e.g., 26V DC OVP for 24V I/O modules).
3. Troubleshooting:
   • For output voltage fluctuations: Check input power stability, verify redundant channel synchronization, and inspect output wiring for loose connections.
   • For fault alarms: Use DCS diagnostic tools to identify the fault type (OVP/OCP/overheating) and replace the faulty channel if necessary.
   • Hot-swapping: Follow YOKOGAWA procedures (deactivate the channel via software) to avoid power glitches during module replacement.
4. Maintenance:
   • Inspect input/output terminals for corrosion annually and clean with approved contact cleaner if needed.
   • Test redundant switchover functionality every 6 months to ensure <5ms transition time.
   • Stock spare YOKOGAWA NFPW442-10 modules for critical applications to minimize downtime in case of failure.

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