Product Description
Product Overview
The Yokogawa NFAI143-S50 is an Analog Input Module designed to process 16 isolated channels of 4 to 20 mA current signals. It features robust isolation and supports both 2-wire and 4-wire transmitter configurations, making it a reliable choice for industrial applications requiring precise current input measurement.
Technical Specifications
The NFAI143-S50 Analog Input Module has the following specifications:
| Item | Specification |
|---|---|
| Model | NFAI143 (*1) (*4) |
| Number of Input Channels | 16-channel input, isolated |
| Input Signal | 4 to 20 mA |
| Allowable Input Current | 24 mA |
| Withstanding Voltage | Between input and system: 1500 V AC for 1 minute (*3) |
| Overcurrent Protection | Provided |
| Input Resistance | Power ON: 250 Ω Power OFF: 500 kΩ or more |
| Accuracy | ±0.1% of full scale |
| Data Refresh Cycle | 10 ms |
| Input Step Response Time | 100 ms |
| Transmitter Power Supply | 24.0 to 25.5 V (output current limit: 25 mA) |
| Setting of 2-wire or 4-wire Transmitter | For each channel by setting pin |
| Temperature Drift | Max. ±0.01%/°C |
| Maximum Current Consumption | 230 mA (5 V DC) 540 mA (24 V DC) |
| Weight | 0.3 kg |
| External Connection | Pressure clamp terminal, MIL connector cable (*3) |
| HART Communication (*2) | Available |
Model and Suffix/Option Codes
The NFAI143-S50 includes the following configuration details:
| Category | Details |
|---|---|
| Model | NFAI143 Analog Input Module (4 to 20 mA, 16-channel, Isolated) |
| Suffix Codes |
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