Product Description
🔹 General Information
|
Manufacturer |
Yokogawa |
|---|---|
|
Model/Part Number |
AAI143-S50/A4800 |
|
Description |
Analog Input Module (4 to 20 mA, 16-channel, Isolated) with Option A4800 |
🔹 Description
The AAI143-S50/A4800 is a 16-channel isolated analog input module designed to interface with 4 to 20 mA signals. It supports dual-redundant configurations, channel-wise 2-wire/4-wire selection, and high accuracy measurement. This specific configuration includes the A4800 option, although this option code is not listed in the typical suffix and option definitions—it may refer to a custom terminal assembly, wiring adapter, or factory-specific feature.
🔹 Technical Specifications
|
Item |
Specification |
|---|---|
|
Model |
AAI143 |
|
Input Channels |
16, isolated |
|
Input Signal |
4 to 20 mA |
|
Allowable Input Current |
24 mA |
|
Withstanding Voltage |
1500 V AC for 1 minute (between input and system) |
|
Input Resistance (Power ON) |
270 Ω (at 20 mA) to 350 Ω (at 4 mA) |
|
Input Resistance (Power OFF) |
≥500 kΩ |
|
Accuracy |
±16 µA |
|
Data Update Period |
10 ms |
|
Transmitter Power Supply |
19.0 V or higher @ 20 mA, 25.5 V max @ 0 mA (25 mA current limit) |
|
2-wire/4-wire Selection |
By channel setting pin |
|
Temp Drift |
±16 µA per 10 °C |
|
Current Consumption |
230 mA @ 5 V DC, 540 mA @ 24 V DC |
|
Weight |
Approx. 0.3 kg |
|
External Communication |
Pressure clamp terminal, MIL connector, KS1 dedicated cable |
|
HART Communication |
Available (not enabled in standard -S version) |
🔹 Model Configuration
|
Model Code |
Details |
|---|---|
|
AAI143-S50 |
Standard analog input module (no explosion protection, basic type) |
|
/A4800 |
Custom or special option (not part of standard documented options) |
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