Yokogawa NFPW444

Product Name: 24 V DC Input Power Supply Module for CENTUM VP I/O Rack

Product Introduction:

A rack power module converting 24 V DC site supply into regulated 5.1 V system logic power and pass-through 24 V analog field power for 2-wire transmitters.

Category: Yokogawa

Description

Technical Specifications:

Input: 21.6–31.2 V DC, max 3.3 A, reverse-polarity protected
5.1 V output: 0–7.8 A (11.8 A peak), 40 W (60 W peak)
Startup: ≤ 100 ms after recovery from ≤ 200 ms outage
Overvoltage protect: ≤ 7 V on 5.1 V rail
Overcurrent: shutdown 4–14 s at > 105 %
Field power: 24 V DC in/out, 4 A max, diode-OR for redundant config on NFBU200
Check terminals: +5 V-CHK, +24 V-CHK, GND
LEDs: SYS-POWER, FLD-POWER (green)
Dimensions: 49.7 × 130 × 146.5 mm, 0.6 kg
Withstand: 3000 V AC (input/output), 500 V AC (field/system)

Features: Duplex (1:1 redundant) capable, integrated field-power distribution, front LED health.

Applications: Powers NFAI/NFDI/NFDO I/O families in CENTUM VP FCS racks.

Installation Notes: Install in left-side power slot of NFBU200/NFBS100 base; do not mix AC-input NFPW441/442 with DC-input NFPW444 on same duplex pair.

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