Product Overview
The Yokogawa NFAI143-S01 analog input module delivers high accuracy for industrial data acquisition. It supports 16 isolated channels, each designed for 4–20 mA input signals. Engineers trust this module for stable performance in demanding environments. Moreover, it integrates smoothly with Yokogawa’s distributed control systems.
Key Features
- High Channel Density: The NFAI143-S01 provides 16 isolated current input channels, which simplifies system expansion.
- Robust Electrical Isolation: It withstands 1500 V AC for one minute, protecting both field devices and control systems.
- Superior Accuracy: The module achieves ±0.1% full-scale accuracy while minimizing temperature drift.
- Flexible Configuration: Users can set up 2-wire or 4-wire transmitters per channel using dedicated pins.
- Optional HART Support: Engineers gain advanced diagnostics and communication with the HART-enabled version.
Technical Specifications
| Parameter | Value |
|---|---|
| Manufacturer | Yokogawa Electric Corporation |
| Model | NFAI143-S01 |
| Input Channels | 16 isolated channels |
| Signal Range | 4–20 mA |
| Maximum Current | 24 mA |
| Withstand Voltage | 1500 V AC for 1 minute |
| Overcurrent Protection | Integrated |
| Input Resistance (ON) | 250 Ω |
| Input Resistance (OFF) | ≥500 kΩ |
| Accuracy | ±0.1% of full scale |
| Data Refresh Cycle | 10 ms |
| Step Response Time | 100 ms |
| Transmitter Power Supply | 24.0–25.5 V DC, max 25 mA |
| Current Consumption (5 V DC) | 230 mA |
| Current Consumption (24 V DC) | 540 mA |
| Temperature Drift | Max ±0.01% per °C |
| External Connections | Pressure clamp terminal, MIL connector cable |
| Weight | 0.3 kg |
| Communication Option | HART (optional) |
Applications
The NFAI143-S01 works effectively in a wide range of process industries. Engineers use it in distributed control systems to handle precise analog signals. In addition, the module supports industrial automation systems that rely on isolated current inputs. As a result, it performs well in oil and gas, chemical, and power generation sectors.
Operational Notes
- Supply 24 V DC to the analog field power input for correct operation.
- For intrinsically safe environments, engineers should install an isolation barrier instead of a Zener barrier.
- This module integrates seamlessly with Yokogawa’s control platforms, ensuring consistent performance.
Models and Options
- NFAI143-S01: Standard model with 16 isolated input channels.
- NFAI143-S00: Basic version without environmental durability features.
- NFAI143-S01 (G3): Enhanced version with ISA Standard G3 compliance for harsh environments.
Details
| Weight | 0.3 kg |
|---|
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