NFAI143-S01 | Yokogawa Analog Input Module

The Yokogawa NFAI143-S01 is an analog input module designed for applications that require isolated current input channels. This module supports 16 channels of 4-20 mA input signals and offers high accuracy and reliability, making it ideal for industrial environments.

Key Specifications

• Model: NFAI143
• Number of Input Channels: 16 isolated channels
• Input Signal: 4 to 20 mA
• Allowable Input Current: Up to 24 mA
• Withstanding Voltage: 1500 V AC for 1 minute between input and system (may vary with certain cable types)
• Overcurrent Protection: Included
• Input Resistance:
  • Power ON: 250 Ω
  • Power OFF: 500 kΩ or higher
• 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 (with output current limit of 25 mA)
• Configurable for 2-wire or 4-wire Transmitters: Configurable per channel using a setting pin
• Temperature Drift: Maximum ±0.01% per °C
• Maximum Current Consumption:
  • 230 mA at 5 V DC
  • 540 mA at 24 V DC
• Weight: 0.3 kg
• External Connection Options: Pressure clamp terminal, MIL connector cable
• HART Communication: Available (optional)

Note:

• 24 V DC must be supplied to the analog field power supply terminal of the power supply module for operation.
• For intrinsically safe applications, an isolation barrier should be used instead of a Zener barrier.

Models and Suffix Codes

• Model: NFAI143 (Analog Input Module for 4-20 mA, 16 channels, isolated)
• Suffix Codes:
  • -S: Standard Type
  • 0: Basic type
  • 1: Includes ISA Standard G3 option for environmental durability

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