
Introduction — Advanced Analog Input for Industrial Control Systems
The Yokogawa AAI143-S50 S1 Analog Input Module is engineered for high-performance data acquisition in distributed control systems (DCS). With 16 isolated input channels and high-precision measurement, this module ensures accurate process monitoring across diverse industrial environments. The S1 variant offers enhanced diagnostics and reliability, making it an ideal choice for critical process applications requiring robust, long-term performance.
Technical Specifications — Performance & Dimensions
| Specification | Description |
|---|---|
| Module Type | Analog Input Module |
| Number of Channels | 16 isolated input channels |
| Input Signal | 4–20 mA DC (standard), 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 × 40 mm × 180 mm |
| Weight | ~0.32 kg |
| Connection | Pressure-clamp terminals, optional KS-cable interface |
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