Product Overview

The Yokogawa NFDV161-P01 S2 is an ultra-high-density digital input module designed for the CENTUM VP Distributed Control System (DCS). Operating as part of the FIO (Field network I/O) architecture, this module provides 64 discrete input channels, allowing for the centralized monitoring of a vast array of field status signals from a single I/O slot. It is specifically engineered to detect 24V DC ON/OFF states from field devices such as valve limit switches, pushbuttons, and protective relay contacts. By translating these binary signals into the system bus logic, the NFDV161-P01 S2 enables the Field Control Station (FCS) to maintain real-time awareness of plant equipment status with deterministic precision.

Technical Characteristics

The NFDV161-P01 S2 is characterized by its high channel capacity, electrical robustness, and seamless system integration:

Ultra-High Density Architecture Featuring 64 isolated channels, this module significantly optimizes cabinet space by reducing the number of I/O units required for large-scale discrete monitoring. This density is critical for complex automation tasks where physical rack space is at a premium.

Precision Signal Detection The module is optimized for 24V DC logic levels, ensuring accurate detection of field signals even in electrically noisy environments. Its advanced internal filtering prevents "chatter" or false triggering caused by mechanical contact bounce or electromagnetic interference (EMI), ensuring high-fidelity data acquisition for safety interlocks.

Rugged Industrial Design Designed for continuous 24/7 operation in demanding sectors, the NFDV161-P01 S2 is built with high-quality components to withstand the vibrations and thermal variations typical of industrial control rooms. The module supports hot-swapping in redundant configurations, ensuring that maintenance can be performed without process interruption.

Versatile System Integration The NFDV161-P01 S2 integrates natively with Yokogawa’s FIO system. It is recognized by the CENTUM VP software suite, allowing for easy configuration of input tags and diagnostic monitoring. The module's design facilitates straightforward wiring to high-density terminal blocks via multi-core cables.

Technical Specifications

• Brand: Yokogawa

• Model Number: NFDV161-P01 S2

• Product Type: Digital Input (DI) Module

• Number of Channels: 64 (Isolated)

• Rated Input Voltage: 24 V DC

• System Interface: CENTUM VP / CS 3000 (FIO System)

• Input Logic: ON/OFF Binary Signals

• Weight: 0.24 kg

• Dimensions: 3.2 x 10.6 x 13.0 cm

• Origin: Japan

Application Areas

The Yokogawa NFDV161-P01 S2 is a primary choice for high-density status monitoring in various industries:

• Oil & Gas: Consolidating valve position feedback from extensive manifold systems.

• Chemical Manufacturing: Tracking sequence-of-events and interlock statuses across batch reactors.

• Power Generation: Monitoring auxiliary contacts from breakers and large motor starters.

• Pharmaceutical Production: Managing discrete feedback from sterile environment sensors and airlocks.