Yokogawa NFAI143-S50 S1 Analog Input Module

Overview

The Yokogawa NFAI143-S50 S1 is a high-performance analog input module. It works with CENTUM VP and ProSafe-RS systems. Engineers use it to acquire accurate 4–20 mA analog signals from field instruments. It handles sensors like transmitters, thermocouples, and pressure devices. Each of the 16 channels offers individual isolation, improving signal integrity and system reliability.

Technical Specifications

Module Type: Analog Input Module (Current)
Input Channels: 16 (individually isolated)
Input Signal: 4 to 20 mA DC
Allowable Input Current: Up to 24 mA
Resolution: 16 bits
Accuracy: ±0.1% of full scale
Temperature Drift: Max. ±0.01%/°C
Input Resistance:

• Power ON: 250 Ω

• Power OFF: 500 kΩ or more
  Step Response Time: 100 ms
  Data Refresh Cycle: 10 ms
  Transmitter Power Supply:

• Voltage: 24.0 to 25.5 V DC

• Output Current Limit: 25 mA
  2-wire/4-wire Setting: Configurable per channel via pin
  Overcurrent Protection: Built-in

Isolation:

• Between input and system: 1500 V AC for 1 minute

• Channel-to-channel isolation: Yes

Power Consumption:

• 5 V DC: Max. 230 mA

• 24 V DC: Max. 540 mA

Dimensions: 482 mm (W) × 210 mm (H) × 220 mm (D)
Weight: 0.3 kg
Mounting: Rack or panel mount
Operating Temperature: 0°C to 60°C (standard range)
Condition: New and original