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NFAI143-H50-S1 Analog Input Module Yokogawa

NFAI143-H50-S1 Analog Input Module Yokogawa

Configured for high-density analog signal acquisition within industrial automation platforms, the Yokogawa NFAI143-H50-S1 (NFAI143-H50-S1 Analog Input Module) provides direct physical/electrical execution.

Suffix Breakdown & Model Matrix

  • NFAI143: Base...
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Availability: Low stock: 50 left

SKU: NFAI143-H50-S1
Vendor: Yokogawa
Category: Analog Input Module
Related Series:

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Configured for high-density analog signal acquisition within industrial automation platforms, the Yokogawa NFAI143-H50-S1 (NFAI143-H50-S1 Analog Input Module) provides direct physical/electrical execution.

Suffix Breakdown & Model Matrix

  • NFAI143: Base model designation for the 16-channel analog input hardware module.
  • -H50: Configuration suffix indicating support for HART communication protocols and standard signal filtering.
  • -S1: Hardware build revision suffix specifying standard industrial environmental grading and mounting compatibility.

Hardware Specifications

Parameter Specification
Model NFAI143-H50-S1
Brand Yokogawa
Origin Japan
Weight 0.3 kg
Dimensions Standard Yokogawa I/O module form factor
Operating Temp 0 to 60 deg C
Power Consumption 230 mA at 5 V DC; 540 mA at 24 V DC
Input Channels 16 isolated input channels
Input Signal 4 to 20 mA DC current signals (max input current 24 mA)
Input Resistance Approx. 250 ohm (Power ON); 500 kohm or more (Power OFF)
Accuracy & Timing Accuracy plus-minus 0.1% of full scale; data update cycle 10 ms; step response time 100 ms

4-20 mA HART Loop Protocol

The module executes precise analog-to-digital conversion across sixteen independent channels, supporting standard 4-20 mA HART loop protocol communications with transmitters. Electrical isolation between input channels and the system bus withstands 1500 V AC for 1 minute, preventing ground loop interference and voltage transients. Integrated transmitter power supply filtering, overcurrent protection, and configurable 2-wire or 4-wire jumper settings maintain signal stability under fluctuating field conditions.

Frequently Asked Questions

Q: Does the NFAI143-H50-S1 module support online hot-swapping during active controller operation?

A: Yes, when installed within a baseplate architecture and node configuration supporting online maintenance, the module can be replaced without a system power shutdown.

Q: How is transmitter loop power supplied across the 16 input channels?

A: The module provides an internal transmitter power supply of 24.0 to 25.5 V DC with a 25 mA current limit per channel, configurable for 2-wire or 4-wire operation via setting pins.

Field Installation Guidelines

  • Insert the module securely into the designated baseplate slot, ensuring proper backplane pin engagement before securing the front mounting screws.
  • Terminate field signal wiring onto the corresponding terminal blocks, maintaining twisted-pair shielding grounded at a single reference point to suppress electromagnetic interference.
  • Verify that ambient panel temperatures remain within the 0 to 60 deg C operating range with adequate vertical airflow for thermal management.