




Introduction — High-Reliability Analog Input for Industrial Automation
The Yokogawa AAI143-S50/ATA4S-00 Analog Input Module is engineered to provide precise, high-density analog signal acquisition for distributed control systems (DCS). With 16 isolated input channels and the robust ATA4S-00 interface, it ensures reliable 4–20 mA measurement even in challenging industrial environments. This module combines fast response, high accuracy, and simplified wiring, making it ideal for critical process control applications requiring consistent and uninterrupted operation.
Technical Specifications — Dimensions & Performance
| Specification | Description |
|---|---|
| Module Type | Analog Input Module |
| Number of Channels | 16 isolated channels |
| Input Signal | 4–20 mA DC; 1–5 V DC compatible |
| Input Resistance | ~270 Ω at 20 mA, 350 Ω at 4 mA |
| Accuracy | ±16 µA typical |
| Update Rate | 10 ms per channel |
| Transmitter Power Supply | 19–25.5 V DC, up to 25 mA per channel |
| Isolation Voltage | 1500 V AC (input-to-system) |
| Power Supply | 24 V DC nominal |
| Operating Temperature | –25°C to +70°C |
| Dimensions | 130 mm × 42 mm × 180 mm |
| Weight | ~0.34 kg |
| Terminal Interface | ATA4S-00 pressure-clamp terminals for reliable and secure connections |
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