Yokogawa NFAI143-H51 S1 Analog Input Module
Product Overview
The Yokogawa NFAI143-H51 S1 is a high-performance analog input module designed for industrial automation systems. It offers 16 isolated input channels capable of accepting 4 to 20 mA DC signals, making it ideal for applications requiring precise and reliable signal processing. This module is particularly suitable for integration into Yokogawa’s CENTUM and STARDOM systems, providing seamless connectivity and enhanced system performance.
Technical Specifications
| Feature | Specification |
|---|---|
| Model | NFAI143-H51 S1 |
| Input Channels | 16 isolated channels |
| Input Signal | 4 to 20 mA DC |
| Allowable Input Current | 24 mA |
| Input Impedance | 250 Ω (Power ON), ≥500 kΩ (Power OFF) |
| Withstanding Voltage | 1500 V AC for 1 minute between input and system |
| Accuracy | ±16 µA (for input range 1 to 23 mA) |
| Data Refresh Cycle | 10 ms |
| Transmitter Power Supply | 19.0 V to 25.5 V (output current limit: 25 mA) |
| Temperature Drift | Max. ±0.01%/°C |
| Dimensions (W x H x D) | 2.2 cm x 12.4 cm x 12.6 cm |
| Weight | 0.1 kg |
| Country of Origin | Japan |
Note: A Zener barrier is not allowed to be connected with this module. Use an isolation barrier when the module is used in intrinsically safe applications.
Installation and Maintenance
Installation Guidelines
- Mounting: Secure the module onto a standard DIN rail in a dry, well-ventilated enclosure.
- Wiring: Use appropriate gauge wires for 4 to 20 mA DC input connections. Ensure all connections are tight and secure to prevent signal loss.
- Communication: Connect the module to the system using the designated communication interface, ensuring proper polarity and secure connections.
- Power Supply: Verify that the power supply voltage is within the specified range (19.0 V to 25.5 V) before powering up the module.
Maintenance Tips
- Regular Inspections: Periodically check for loose connections, signs of wear, or corrosion on terminals.
- Firmware Updates: Ensure the module’s firmware is up to date to maintain compatibility and performance.
- Cleaning: Use a dry, soft brush to remove dust and debris from the module’s surface. Avoid using liquids or solvents.
- Troubleshooting: If the module fails to operate correctly, consult the user manual for diagnostic LEDs and error codes to identify potential issues.
Recommended Similar Products
For applications requiring different configurations or additional features, consider the following Yokogawa analog input modules:
| Model | Description | Link |
|---|---|---|
| NFAI143-H50 S1 | 16-channel isolated analog input module | View Product |
| NFAI143-S01 S1 | 16-channel isolated analog input module | View Product |
| NFAI143-S51 S1 | 16-channel isolated analog input module | View Product |
| AAI143-H50 S1 | 16-channel isolated analog input module | View Product |
| AAI143-S50 S1 | 16-channel isolated analog input module | View Product |
For more information on these products, please visit the official Johnson Controls product page.
