Product Description

The NFPW444-11 is a high-reliability DC-to-DC power regulation module designed for the Yokogawa STARDOM FCN and FCN-RTU autonomous controller series. It converts a 24 V DC supply into a stable 5.1 V DC logic power output for the system backplane and connected I/O modules. As an updated revision of the NFPW444 family, the “-11” version typically incorporates enhanced component durability and protective measures for operation in harsh or corrosive industrial environments.

Technical Specifications

Key Features

• Duplex Redundancy Management
  Two NFPW444-11 modules operate in load-sharing mode, with instantaneous takeover upon failure of one unit.

• Hot-Swap Capability
  Supports live removal and replacement without interrupting control logic or field communications.

• RAS Integration
  Built-in Reliability, Availability, and Serviceability functions provide continuous health monitoring and diagnostic feedback to the CPU.

• Corrosion-Resistant Design
  The “-11” revision typically complies with ISA G3 environmental requirements, making it suitable for installations exposed to corrosive gases.

Technical FAQ

Q: What is the difference between NFPW444-10 and NFPW444-11?
A: The NFPW444-11 is a later hardware revision of the NFPW444-10. While functionally interchangeable in most systems, the -11 version generally features updated components and enhanced environmental or EMC compliance, such as ISA G3 coating.

Q: Can the NFPW444-11 be used in solar-powered RTU installations?
A: Yes. Its native 24 V DC input and high efficiency make it well suited for FCN-RTU sites powered by batteries and solar arrays, commonly used in remote monitoring applications.