YNT512D-V12/KT Yokogawa V Net Datasheet & Technical Manual

16-Channel FIO Analog Input Card Yokogawa NFAI141-S00 NFAI141

16-Channel FIO Analog Input Card Yokogawa NFAI141-S00 NFAI141

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Yokogawa NFAI141-S00 FIO Analog Input Module The Yokogawa NFAI141-S00, also cataloged as the NFAI141 Analog Input Module, operates as a...

رمز المنتج: NFAI141-S00

Manufacturer: Yokogawa
Product No.: NFAI141-S00
Product Type: Analog Input Modules
Product Origin: JAPAN
Payment:T/T, Western Union
Weight: 240g
Shipping port: Xiamen
Warranty: 12 months

وصف التقييمات

Yokogawa NFAI141-S00 FIO Analog Input Module

The Yokogawa NFAI141-S00, also cataloged as the NFAI141 Analog Input Module, operates as a dedicated hardware component for multi-channel analog signal acquisition within CENTUM VP / CS 3000 FIO systems.

Suffix Breakdown & Model Matrix

The NFAI141 series uses standardized suffix configurations to define specific electrical interface and protection attributes:

Base Model (NFAI141): Designates a 16-channel, isolated 4-20 mA current/voltage input module interface.
Type Suffix (-S): Specifies the standard type module configuration.
Protection Suffix (0): Indicates a design built without intrinsic safety explosion protection.
Option Suffix (0): Identifies the default standard physical termination and housing option without specialized adapters.

Hardware Specifications

Parameter	Specification
Model	NFAI141-S00
Brand	Yokogawa
Origin	Japan
Weight	0.24 kg
Dimensions	2.2 cm x 12.4 cm x 12.6 cm
Operating Temp	-20 to 70 deg C
Power Consumption	230 mA (at 5 V DC), 540 mA (at 24 V DC)
Number of Channels	16 isolated channels
Input Signal Type	4-20 mA DC
Accuracy	Plus or minus 16 uA
Isolation	1500 VAC between input and system for 1 minute
Update Period	10 ms

Channel-to-Channel Isolation and Diagnostics

The module features a robust signal interface incorporating channel-to-system galvanic isolation rated to withstand 1500 VAC. The input circuitry utilizes 250 to 350 Ohm resistance parameters during active power-on cycles to convert incoming 4-20 mA current loops into internal system logic voltages. A diagnostic engine continuously registers live values, detecting out-of-range sensor currents up to 24 mA and triggering alerts for system loop faults. Integrated transmitter supply outputs provide a steady 19.0 to 25.5 VDC loop power, limited to 25 mA per channel, which isolates field-side ground loops and prevents single-point field faults from disrupting the wider FIO backplane.

Frequently Asked Questions

Q: How does the input resistance change when the module loses backplane power?

A: When the module is powered on, the input resistance registers between 250 and 350 Ohm. If the system loses power (Power OFF), the resistance jumps to greater than or equal to 500 kOhm to prevent current flow from back-feeding into the system.

Q: Can this module operate in dual-redundant configurations, and how is line termination managed?

A: Yes, dual-redundant configuration is fully supported using two adjacent slots on the FIO node. You must connect them using a compatible dual-redundant terminal block or a specialized KS1 cable interface to split the field signals.

Q: How does ambient temperature affect the measurement accuracy?

A: The baseline accuracy of the module is plus or minus 16 uA. For every 10 deg C shift in ambient operating temperature, an additional drift of plus or minus 16 uA must be accounted for in the engineering calibration limits.

Field Installation Guidelines

Shield Grounding: Connect all external analog signal cable shields to the dedicated cabinet instrument ground bar, ensuring only a single-ended ground point exists to eliminate ground loop current errors.
Corrosive Protection: For installations in chemical process facilities, ensure the cabinet enclosure remains sealed to maintain the ISA G3 conformal coating protection barrier against corrosive atmospheres.
Cable Separation: Keep the low-voltage KS1 signal cables physically separated from any high-voltage motor control power lines by at least 15 cm to minimize electromagnetic interference (EMI) coupling.
Field Connection Stability: Secure all wiring connections to the pressure clamp terminal block using a torque-calibrated screwdriver to prevent intermittent circuit resistance shifts on the 16 analog loops.

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