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Product Introduction
The Yokogawa NFAI143-S50 Analog Input Module is a high-performance input module engineered for use in the Yokogawa CENTUM VP and ProSafe-RS control systems. It is designed to handle analog signals with precision and reliability, offering 16 analog input channels for integration into safety instrumented systems (SIS) and process automation environments.
With its enhanced signal conditioning, noise immunity, and diagnostic capabilities, the NFAI143-S50 is an ideal choice for industries requiring high accuracy, safety compliance, and robust performance in demanding conditions. The module is compliant with international safety standards such as SIL3 (IEC61508), making it suitable for critical applications.
This module supports both voltage and current inputs and features built-in HART communication support, allowing two-way digital communication over standard 4–20 mA analog signals. Its compact design and compatibility with Yokogawa’s FIO (Field Control I/O) systems make it both versatile and scalable.
Product Specifications
| Parameter | Description |
|---|---|
| Model Number | NFAI143-S50 |
| Manufacturer | Yokogawa Electric Corporation |
| Type | Analog Input Module (16 channels) |
| Input Signal Types | 4–20 mA, 1–5 V, 0–10 V |
| Number of Channels | 16 independent analog input channels |
| HART Support | Yes (HART 5 and HART 7 compliant) |
| Resolution | 16-bit A/D converter |
| Input Impedance | >10 MΩ (voltage), 250 Ω (current) |
| Scan Rate | Programmable, typically 100 ms |
| Isolation | Channel-to-channel and channel-to-ground isolated |
| Operating Voltage | Supplied through baseplate – typically 24 V DC |
| Power Consumption | Approx. 3.5 W |
| Operating Temperature | -20°C to +70°C |
| Storage Temperature | -40°C to +85°C |
| Humidity | 5% to 95% RH, non-condensing |
| Compliance | SIL3 (IEC61508), CE, CSA, ATEX, FM, RoHS |
| Mounting | DIN rail or panel-mounted in baseplate system |
| Dimensions (W×H×D) | 130 x 107.5 x 32.8 mm |
| Weight | 0.3 kg |
Applications
The Yokogawa NFAI143-S50 module is widely used across various industries that demand high-precision analog input and safety integrity. Key application areas include:
-
Oil & Gas (Onshore/Offshore Platforms)
Accurate monitoring of pressure, temperature, and flow sensors in critical operations with SIL-certified systems. -
Petrochemical & Refining
Integration with complex process control loops requiring stable and noise-free analog input for fine control. -
Power Generation
Used in turbine control systems and auxiliary unit monitoring, where reliability and safety are crucial. -
Pharmaceutical Manufacturing
Ensures GMP-compliant data acquisition and precise monitoring of environmental and process variables. -
Water Treatment Facilities
Interfaces with sensors monitoring pH, turbidity, and flow rate in clean and wastewater management systems. -
Chemical Processing Plants
Enables input of key analog parameters for batch, continuous, and hybrid chemical production processes.
Product Advantages
-
High Accuracy and Resolution
16-bit A/D conversion ensures precise data acquisition even in dynamic industrial environments. -
Built-In HART Communication
Supports advanced diagnostics and device configuration without interrupting analog signal operation. -
Channel Isolation
Each input channel is electrically isolated to prevent signal interference and maintain system stability. -
Safety Integrity (SIL3 Certified)
Meets the highest safety requirements for integration into Emergency Shutdown Systems (ESD) and SIS. -
Wide Environmental Operating Range
Functions reliably under extreme temperatures and humidity, ideal for field installations. -
Compact and Scalable Design
Saves cabinet space and allows easy expansion in modular automation systems. -
Fast Scan Time and Diagnostics
Offers configurable scan rates with real-time diagnostic features for proactive system maintenance. -
Global Compliance
Certified under CE, CSA, FM, ATEX, and RoHS, making it suitable for worldwide deployment.
Frequently Asked Questions (FAQ)
-
What is the main function of the NFAI143-S50 module?
It collects and converts analog sensor signals into digital data for processing within control and safety systems. -
How many analog inputs does the module support?
It supports 16 independent analog input channels. -
Can this module support HART devices?
Yes, it supports HART 5 and 7 protocols, allowing simultaneous analog and digital communication. -
Is the NFAI143-S50 module SIL3 certified?
Yes, it complies with SIL3 standards according to IEC61508 for use in safety-critical applications. -
What types of analog signals are supported?
It supports 4–20 mA, 1–5 V, and 0–10 V input signal types. -
Does each channel have isolation?
Yes, channels are fully isolated from each other and from ground. -
What control systems is this module compatible with?
It is compatible with Yokogawa’s CENTUM VP and ProSafe-RS systems. -
Can it be mounted on a DIN rail?
Yes, it supports DIN rail as well as panel mounting via baseplates. -
What is the input impedance for current and voltage inputs?
It is >10 MΩ for voltage input and 250 Ω for current input. -
What is the typical scan rate of the module?
The scan rate is programmable, with a default value of approximately 100 ms.
Recommended Related Models (Same Series or Type)
| Model | Description |
|---|---|
| NFAR141-S50 | Analog input module with 8 channels and enhanced diagnostics. |
| NFAI841-S50 | High-speed analog input module with 16 isolated channels. |
| NFAI143-H50 | Analog input module with enhanced HART communication capabilities. |
| NFAI545-S50 | Compact analog input module for smaller FIO systems. |
| NFAI135-S00 | Legacy model with standard analog input support (non-HART). |
| NFAI143-S00 | Base version of NFAI143 without advanced safety certifications. |
Popular Yokogawa Models (Same Brand)
| Model | Description |
|---|---|
| CENTUM VP | Yokogawa’s flagship DCS platform for large-scale integrated control. |
| ProSafe-RS | Safety instrumented system certified for SIL3 applications. |
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| YS1700 | Programmable single-loop controller for field equipment control. |
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