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YOKOGAWA STARDOM / FCN
NFAI141-S50
16-Channel Analog Input Module
NFAI141 is a non-isolated analog input module for 4 to 20 mA DC signals. It provides sixteen input channels for process transmitters and is designed for installation in Yokogawa FCN autonomous controller architectures.
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FIELD TRANSMITTERS
2-Wire / 4-Wire
Compatible process transmitters provide normalized 4 to 20 mA DC signals to the analog input channels.
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16 INPUTS
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NFAI141-S50
Analog Acquisition
Sixteen non-isolated 4 to 20 mA input channels receive process measurement signals for the FCN control architecture.
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FCN BUS
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CONTROL SYSTEM
FCN
The acquired values can be used by the controller for process monitoring, calculation and control functions.
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Technical Characteristics
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| Module type | Analog input module |
| Input channels | 16 channels, non-isolated |
| Input signal | 4 to 20 mA DC |
| Allowable input current | 27 mA |
| Overcurrent protection | Provided |
| Input resistance, power ON | 250 Ω |
| Input resistance, 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 | 22.8 to 26.4 V DC |
| Transmitter supply current limit | 27 mA |
| Transmitter configuration | 2-wire or 4-wire, selectable for each channel by setting pin |
| Temperature drift | Maximum ±0.01%/°C |
| Maximum current consumption | 310 mA at 5 V DC; 450 mA at 24 V DC |
| Weight | Approximately 0.2 kg |
| External connection | Pressure clamp terminal or MIL connector cable |
| MIL connection | 40-pin MIL connection |
| Compatible terminal block | NFTA4S |
| HART communication | Available |
| Operating temperature | −20 to +70 °C |
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DESIGN LOGIC
Sixteen Channels.
One FCN Module. The 16-channel arrangement is intended for applications where multiple 4 to 20 mA process measurements must be collected within an FCN-based automation system while keeping the input circuits non-isolated.
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NFA ANALOG INPUT FAMILY
Choose by Signal
and Isolation |
For replacement work, the signal type, channel count, isolation requirement, terminal arrangement and controller architecture should all match the installed configuration before selecting a related NFA module.
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DELIVERY
3–5 Days
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WARRANTY
12 Months
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PACKAGING
Brand New
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PAYMENT
T/T
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Can NFAI141-S50 replace an NFAI143 when the existing system requires isolated inputs?
No. NFAI141 is specified as a 16-channel non-isolated 4 to 20 mA input module, while NFAI143 is the corresponding 16-channel isolated 4 to 20 mA input type. If channel isolation is part of the installed design, the module type must be matched accordingly.
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What should be checked before ordering NFAI141-S50 for an existing FCN installation?
Confirm that the application uses 4 to 20 mA signals, requires sixteen non-isolated channels, and matches the intended FCN architecture. The terminal arrangement should also be checked, including the NFTA4S option or 40-pin MIL connection.
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Does NFAI141-S50 support both 2-wire and 4-wire transmitters?
The NFAI141 specification provides selection of 2-wire or 4-wire transmitter configuration for each channel by a setting pin. This makes the channel configuration an important point to verify when replacing an existing module.
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Why does NFAI141-S50 have a 27 mA transmitter supply limit?
The module provides a transmitter supply of 22.8 to 26.4 V DC with an output current limit of 27 mA. This value should be considered when confirming the power requirement of a connected transmitter and when evaluating a replacement for an installed module.
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Is NFAI141-S50 suitable when HART communication is required on a 4 to 20 mA loop?
HART communication is available with the NFAI141 family specification. For a replacement project, the complete transmitter loop arrangement and system configuration should still be checked rather than relying only on the presence of the HART function.
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R/R
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Return / Replacement Policy
Please contact us within 7 days if you have any question after you receiving the items.
The returned items has to be in its original condition, specific reason for the return, we will issue a return or replacement for your order after we received the returns.
The buyer is responsible for all the shipping cost incurred.
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