Brand New Yokogawa NFPW444-10 STARDOM Style S2 Unit

Product Overview

The Yokogawa NFPW444-10 serves as the primary DC-to-DC power conversion unit for Yokogawa’s autonomous and distributed control platforms, including STARDOM FCN/FCJ and CENTUM VP. It accepts a wide 24V DC input range and delivers high-precision regulated power to critical system components like CPUs and I/O modules. We supply this module as 100% Brand New and Original, ensuring your industrial automation architecture benefits from the enhanced Reliability, Availability, and Serviceability (RAS) features inherent in the Style S2 design.

Part Number Breakdown: NFPW444-XY

Technical Specifications

The NFPW444-10 utilizes high-efficiency switching technology to maintain stable system rails under varying load conditions:

• Rated Input Voltage: 24 V DC (±10%)

• Input Voltage Range: 21.6 to 31.2 V DC

• Rated Output Voltage: +5.1 V DC (Logic Side) / +12 V DC (System Dependent)

• Rated Output Current: 0 to 7.8 A (for 5.1V rail)

• Total Power Output: ~60 W (Sufficient for a fully populated NFBU rack)

• Cooling Method: Passive natural convection

• Hot-Swappable: Fully supported in redundant configurations

• Dimensions: 49.7 × 130 × 146.5 mm

• Weight: 0.6 kg (1.3 lbs)

• Certifications: CE, UL, CSA, ATEX

Engineering Advantages

The NFPW444-10 resolves common power-related vulnerabilities in industrial automation:

• Uninterrupted Maintenance: The hot-swappable design allows you to replace a faulty power module while the system remains live. In redundant dual-power setups, the secondary module takes the full load instantly, preventing process interruptions and costly downtime.

• Aggressive EMI Rejection: Engineered for the "dirty" power environments of oil and gas and petrochemical plants, this module filters input transients and electrical noise. It provides a "clean" 5.1V DC logic rail, preventing bit errors in the CPU and ensuring high-integrity signal processing for safety instrumented systems (SIS).

• High-Density Power Delivery: Despite its compact 49.7mm width, the NFPW444-10 delivers nearly 8 Amps of current. This high power density supports a complete rack of high-draw analog I/O and communication modules without requiring auxiliary cooling fans, which are often a point of failure.

• Onboard Health Diagnostics: Integrated status LEDs and power health monitoring circuits detect internal faults or input voltage drops. The module reports these anomalies to the system management layer, allowing for predictive maintenance before a complete power failure occurs.

FAQs

Q: Can I mix an NFPW444-10 (24V DC) with an NFPW442-10 (AC) in the same rack for redundancy?

A: No. Redundant power configurations require identical input types to ensure balanced load sharing and consistent diagnostic reporting. Both slots in an NFBU rack must contain modules with the same voltage ratings.

Q: Does the NFPW444-10 support 12V DC systems?

A: Yes. While its primary output is a high-current 5.1V DC for logic, it also provides the regulated 12V DC required by specific system communication interfaces, depending on the backplane configuration of the Yokogawa rack.

Q: What is the primary difference between the NFPW444-10 and the NFPW444-50?

A: The NFPW444-10 is the standard type, whereas the -50 variant typically includes specific explosion protection or environmental coatings. For standard industrial cabinets, the -10 provides the exact same regulated power performance and footprint.

Q: How do I confirm the module is seated correctly during a hot-swap?

A: Observe the front-panel "READY" LED. Once you slide the module into the NFBU rack slot and lock it, the LED will illuminate green, indicating the internal self-diagnostics have passed and the module is actively contributing to the rack power load.