YOKOGAWA NFAI143-H50 16-Channel HART Analog Input Module for CENTUM VP DCS

Product Description

The NFAI143-H50 is a high-density analog input module of Yokogawa NF series, matching CENTUM VP and STARDOM FCN controllers. It collects 4–20mA signals from process transmitters and supports HART communication to read device diagnostic data.

Suffix H50 means 24V transmitter power supply and full channel isolation. Its 16 galvanically isolated channels eliminate ground loop interference, with independent 24VDC loop power for two-wire transmitters. Equipped with signal filtering and circuit fault detection, this single-slot hot-swappable module serves as maintenance spare for petrochemical and power DCS cabinets.

Technical Specifications

PN: NFAI143-H50, Manufacturer: Yokogawa Electric, Japan

Channels: 16 isolated analog input channels

Signal: 4–20mA DC, HART compatible

Transmitter power: 24VDC per channel, max 25mA

Isolation: 1500V AC channel-to-backplane isolation

Accuracy: ±0.04% FS @25℃

Refresh cycle: 10ms

Backplane power: 300mA @5VDC, 400mA @24VDC

Mount: Single slot NF rack, hot-swappable

Operating Temp: 0℃ ~ +60℃; Storage: -40℃ ~ +85℃

Humidity: 5%–95% non-condensing, conformal coated PCB

Software: CENTUM VP Engineering, STARDOM Logic Designer

Key Features

16 high-density channels to save rack installation space.

Native HART function for remote transmitter diagnosis without handheld communicators.

1500V isolation to block surge, ground loop and industrial EMI interference.

Automatic open/short circuit detection for quick field fault locating.

Standard 24V loop power supply compatible with mainstream process transmitters.

10ms fast sampling cycle for rapid flow and pressure loop control.

Hot-swap support for online replacement without DCS shutdown.

Full compatibility with all NF series CPU and I/O modules.