Product Description
🔹 General Information
|
Manufacturer |
Yokogawa |
|---|---|
|
Model/Part Number |
NFAI841-S00/A4S00 |
|
Description |
Analog I/O Module, 8-channel input/output, non-isolated, 4–20 mA, standard type, with pressure clamp terminal block |
🔹 Product Overview
The Yokogawa NFAI841-S00/A4S00 is a non-isolated Analog I/O Module designed for integration in process control systems. It provides 8 current input and 8 current output channels, supporting loop-powered devices in industrial automation applications. This model includes pressure clamp terminal blocks for simplified field wiring and is ideal for applications where compact I/O with reliable analog performance is required.
🔹 Technical Specifications
|
Specification |
Details |
|---|---|
|
Model |
NFAI841-S00/A4S00 |
|
Type |
Current/Voltage I/O Module (Non-Isolated) |
|
Input Channels |
8 channels (4–20 mA) |
|
Output Channels |
8 channels (4–20 mA) |
|
Input Resistance (Power ON) |
250 Ω |
|
Input Resistance (Power OFF) |
≥500 kΩ |
|
Allowable Load Resistance |
0 to 750 Ω |
|
Accuracy |
±0.1% of full scale |
|
Data Refresh Cycle |
10 ms |
|
Input Step Response Time |
100 ms |
|
Output Step Response Time |
40 ms |
|
Transmitter Power Supply |
22.8 to 26.4 V DC (current limited to 27 mA) |
|
Output Fallback |
Configurable per channel |
|
Circuit-open Detection |
Input current ≤0.65 mA |
|
Temperature Drift |
Max. ±0.01% / °C |
|
Max Current Consumption |
310 mA @ 5 V DC, 500 mA @ 24 V DC |
|
External Connections |
Pressure clamp terminal block (Option: /A4S00) |
|
HART Communication |
Not available in this model (S00 = standard, no HART) |
|
Weight |
0.3 kg |
🔹 Model & Suffix Breakdown
|
Component |
Code |
Meaning |
|---|---|---|
|
Base Model |
NFAI841 |
Analog I/O, 8 input & 8 output, 4–20 mA |
|
Suffix -S00 |
-S |
Standard type |
|
0 |
Basic type (no special coating) |
|
|
0 |
No explosion protection |
|
|
Option Code |
/A4S00 |
Pressure Clamp Terminal Block [Model: NFTA4S-00] |