NFAI141-S01 Yokogawa Analog Input Module

Yokogawa NFAI141-S01 STARDOM FCN FCJ Analog Input Module

Yokogawa NFAI141-S01 STARDOM FCN FCJ Analog Input Module

Availability: 20 left in stock

Yokogawa NFAI141-S01 Analog Input Module Configured for high-density 4-20 mA signal acquisition in STARDOM FCN/FCJ autonomous controllers, the Yokogawa NFAI141-S01...

SKU: NFAI141-S01

Manufacturer: Yokogawa
Product No.: NFAI141-S01
Product Type: Analog Input Modules
Product Origin: JAPAN
Payment:T/T, Western Union
Weight: 200g
Shipping port: Xiamen
Warranty: 12 months

Description Reviews

Yokogawa NFAI141-S01 Analog Input Module

Configured for high-density 4-20 mA signal acquisition in STARDOM FCN/FCJ autonomous controllers, the Yokogawa NFAI141-S01 (NFAI141 Analog Input Module) provides direct physical/electrical execution across process monitoring networks.

Hardware Specifications

Parameter	Specification
Model	NFAI141-S01
Brand	Yokogawa
Origin	Japan
Weight	0.20 kg (0.44 lbs)
Dimensions	25 x 127 x 127 mm
Operating Temp	-20 to +70 deg C
Power Consumption	1.2 W (22.8 to 26.4 VDC supply voltage)
Input Channels	16 non-isolated channels
Signal Types Supported	4-20 mA DC or 1-5 V DC
Input Resistance	250 ohm (typical)
Allowable Input Current	27 mA max
Accuracy	+/- 0.1% of full scale
Data Refresh Cycle	10 ms
Input Step Response Time	100 ms
Temperature Drift	Max +/- 0.01% / deg C
Connection Type	Pressure clamp terminal block

DCS Process Control and HART Communication Features

The Yokogawa NFAI141-S01 module supports up to 16 non-isolated analog input channels, acquiring 4-20 mA current loop and 1-5 VDC signals directly from field transmitters. Integrated HART protocol pass-through capability allows digital configuration data and secondary process variables to transfer across analog loops to the STARDOM controller backplane.

To preserve measurement integrity, the module maintains a 10 ms data refresh cycle and a high accuracy rating of +/- 0.1% of full scale. Channel-to-channel non-isolated architecture minimizes module width and backplane current draw, while selectable 2-wire or 4-wire transmitter power loops provide 22.8 to 26.4 VDC with integrated overcurrent protection capped at 27 mA.

Frequently Asked Questions

Q: Can Zener barriers connect directly to the NFAI141-S01 for intrinsically safe field loops?

A: No. Because the NFAI141-S01 is a non-isolated module, intrinsically safe applications require galvanic isolation barriers rather than Zener barriers to prevent ground fault currents.

Q: How does the module handle 2-wire vs 4-wire transmitter supply configurations?

A: Engineers configure each channel individually between 2-wire and 4-wire mode using internal setting pins on the module hardware prior to installation.

Q: What happens if an overcurrent condition occurs on a transmitter loop?

A: Internal overcurrent protection limits the field loop current to a maximum of 27 mA, protecting internal sensing resistors from overvoltage damage.

Field Installation Guidelines

Pressure Clamp Terminal Wiring: Technicians must strip signal leads to 6 mm and secure them into the pressure clamp terminal block using a calibrated screwdriver, ensuring proper wire retention without shearing copper strands.
Shield Grounding Protocols: Installers must terminate overall cable shields to the functional earth (FE) bus bar at the control cabinet entry point to prevent high-frequency electromagnetic noise from degrading non-isolated analog signals.
Cabinet Ventilation Space: Maintain a minimum clearance of 50 mm above and below the module rack assembly to support natural convective airflow inside the panel enclosure.
Module Seating and Retaining Screws: Before powering up the STARDOM base unit, field engineers must verify that the module is fully seated into the backplane connector and tighten the top and bottom retaining screws.

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