NFAI135-S00 CENTUM VP Analog Input Module | Yokogawa

Product Overview

The Yokogawa NFAI135-S00 functions as a high-density analog input interface for the CENTUM VP Distributed Control System (DCS). This module captures 16 channels of field data from various transmitters, converting environmental variables into precise digital values for control computation. We supply this module as 100% Brand New and Original, ensuring seamless integration into your current control station architecture while maintaining the highest levels of data accuracy.

Part Number Breakdown

The NFAI135 series utilizes specific suffix codes to define the hardware configuration and application scope:

• NFAI135: Analog Input Module (4 to 20 mA, 16-Channel).

• -S: Standard type for general industrial use.

• 0: Always 0 (Basic specification).

• 0: Basic type without specialized options.

Technical Specifications

The NFAI135-S00 utilizes a non-isolated architecture to provide high-speed signal sampling across multiple channels.

Engineering Advantages

• High-Density Signal Processing: The 16-channel design maximizes cabinet space efficiency. By consolidating more inputs into a single module slot, this unit reduces the total hardware footprint and lowers the overall cost per point in large-scale plant deployments.

• Dual-Redundant Stability: This module natively supports dual-redundant layouts. When paired with a second NFAI135-S00, the system ensures continuous process monitoring. If one module encounters a fault, the backup unit assumes control immediately without interrupting the process loop.

• Flexible Transmitter Interfacing: The circuitry accommodates both 2-wire and 4-wire transmitters. This flexibility allows engineers to standardize on a single module type regardless of the field instrument power configuration, simplifying spare parts inventory and wiring schematics.

• Optimized Data Refresh Rate: The module updates process data every 10 ms. This rapid refresh rate enables the DCS to execute high-speed control logic, which is essential for maintaining stability in fast-reacting process loops such as pressure or flow control.

FAQs

Can the NFAI135-S00 supply power to field transmitters?

Yes. For 2-wire transmitters, the module provides the necessary loop power. For 4-wire transmitters, the module acts as a passive receiver of the 4-20 mA or 1-5 V DC signal.

What is the benefit of the non-isolated architecture?

Non-isolated modules typically offer higher density and faster response times at a lower cost per channel. They excel in environments where the field signals share a common ground or where external isolation barriers already exist in the signal path.

How do I confirm the module is 100% Brand New?

We ship every NFAI135-S00 in its original Yokogawa factory-sealed anti-static packaging. Each unit features a verifiable serial number and manufacturer's label, guaranteeing it has never been used in field service or refurbished.

Does this module support hot-swapping?

When used in a dual-redundant configuration within a CENTUM VP station, you can replace a faulty module without shutting down the system. However, always follow the specific safety procedures outlined in the Yokogawa Hardware Instruction Manual to prevent accidental system trips.