Yokogawa NFAI141-S00 Analog Input
The Yokogawa NFAI141-S00 , also cataloged as the NFAI141 Analog Input Module, operates as a dedicated hardware component for high-density current and voltage signal acquisition within Yokogawa STARDOM FCN and FCJ autonomous controller platforms.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | NFAI141-S00 |
| Brand | Yokogawa |
| Origin | Japan |
| Weight | 0.3 kg |
| Dimensions | 2.2 cm x 12.4 cm x 12.6 cm |
| Operating Temp | 0 deg C to 55 deg C |
| Power Consumption | Backplane bus powered |
| Input Channels | 16 channels (common minus, non-isolated between channels) |
| Input Signal Range (Current) | 4-20 mA DC |
| Input Signal Range (Voltage) | 1-5 V DC |
| Input Impedance | 250 ohm (current) / 1 Mohm (voltage) |
| Accuracy | +/-0.1% of full scale |
| Data Refresh Cycle | 10 ms |
| Maximum Allowable Input | +/-15 V DC or 30 mA DC |
| Isolation Resistance | >= 100 Mohm (at 500 V DC) |
| Withstanding Voltage | 500 V AC between input and system |
DCS Signal Conditioning & Channel-to-Channel Isolation
The NFAI141-S00 features analog front-end circuitry engineered to process 16 channels of 4-20 mA HART loop protocol signals or 1-5 V DC analog inputs with a high-speed data refresh cycle of 10 ms. Built with 500 V AC withstand isolation between field input terminals and internal system logic, the module protects controller backplane processing from field-side voltage surges. Onboard analog-to-digital conversion provides 0.1% full-scale accuracy across high-density field instrumentation loops, suppressing common-mode noise and ground potential variations in DCS environments.
Frequently Asked Questions
Q: Does the NFAI141-S00 module support hot-swapping during online controller operation?
A: Yes, within FCN and FCJ systems, the NFAI141-S00 can be replaced while the controller base is powered, provided online maintenance modes are enabled in system software.
Q: Are the 16 analog input channels on the NFAI141-S00 individually isolated from each other?
A: No, the 16 channels share a common minus return and are non-isolated from one another, though the entire channel group is isolated from system backplane logic at 500 V AC.
Q: Can 4-20 mA current inputs and 1-5 V DC voltage inputs be combined on the same NFAI141-S00 module?
A: Both signal types are supported, but individual channel wiring and STARDOM software parameter configurations must strictly match the selected signal type per channel.
Field Installation Guidelines
- Turn off external field loop power or enable system maintenance mode prior to inserting the module into the FCN/FCJ controller base slot.
- Ensure the module locking mechanism engages firmly with the base rack to maintain low-impedance system grounding and bus connectivity.
- Route signal cables separately from high-voltage AC power wiring and inductive relay lines to prevent electromagnetic coupling.
- Connect cable shield drain wires directly to the cabinet protective earth (PE) bus bar rather than the module terminal common.
Yokogawa NFAI141-S00 Analog Input
Yokogawa NFAI141-S00 Analog Input
The Yokogawa NFAI141-S00 , also cataloged as the NFAI141 Analog Input Module, operates as a dedicated hardware component for high-density current and voltage signal acquisition within Yokogawa STARDOM FCN and FCJ autonomous controller platforms.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | NFAI141-S00 |
| Brand | Yokogawa |
| Origin | Japan |
| Weight | 0.3 kg |
| Dimensions | 2.2 cm x 12.4 cm x 12.6 cm |
| Operating Temp | 0 deg C to 55 deg C |
| Power Consumption | Backplane bus powered |
| Input Channels | 16 channels (common minus, non-isolated between channels) |
| Input Signal Range (Current) | 4-20 mA DC |
| Input Signal Range (Voltage) | 1-5 V DC |
| Input Impedance | 250 ohm (current) / 1 Mohm (voltage) |
| Accuracy | +/-0.1% of full scale |
| Data Refresh Cycle | 10 ms |
| Maximum Allowable Input | +/-15 V DC or 30 mA DC |
| Isolation Resistance | >= 100 Mohm (at 500 V DC) |
| Withstanding Voltage | 500 V AC between input and system |
DCS Signal Conditioning & Channel-to-Channel Isolation
The NFAI141-S00 features analog front-end circuitry engineered to process 16 channels of 4-20 mA HART loop protocol signals or 1-5 V DC analog inputs with a high-speed data refresh cycle of 10 ms. Built with 500 V AC withstand isolation between field input terminals and internal system logic, the module protects controller backplane processing from field-side voltage surges. Onboard analog-to-digital conversion provides 0.1% full-scale accuracy across high-density field instrumentation loops, suppressing common-mode noise and ground potential variations in DCS environments.
Frequently Asked Questions
Q: Does the NFAI141-S00 module support hot-swapping during online controller operation?
A: Yes, within FCN and FCJ systems, the NFAI141-S00 can be replaced while the controller base is powered, provided online maintenance modes are enabled in system software.
Q: Are the 16 analog input channels on the NFAI141-S00 individually isolated from each other?
A: No, the 16 channels share a common minus return and are non-isolated from one another, though the entire channel group is isolated from system backplane logic at 500 V AC.
Q: Can 4-20 mA current inputs and 1-5 V DC voltage inputs be combined on the same NFAI141-S00 module?
A: Both signal types are supported, but individual channel wiring and STARDOM software parameter configurations must strictly match the selected signal type per channel.
Field Installation Guidelines
- Turn off external field loop power or enable system maintenance mode prior to inserting the module into the FCN/FCJ controller base slot.
- Ensure the module locking mechanism engages firmly with the base rack to maintain low-impedance system grounding and bus connectivity.
- Route signal cables separately from high-voltage AC power wiring and inductive relay lines to prevent electromagnetic coupling.
- Connect cable shield drain wires directly to the cabinet protective earth (PE) bus bar rather than the module terminal common.
