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Yokogawa AAI143-S53/K4A00 Analog Input Module
Introduction — Reliable Analog Data Capture for Process Control
The Yokogawa AAI143-S53/K4A00 Analog Input Module is a high‑precision I/O module purpose‑built for industrial DCS environments, including the CENTUM series. It offers stable, isolated analog input capabilities and flexible transmitter support, delivering accurate, noise‑resistant signal acquisition for critical control loops. With 16 independent channels and broad input compatibility, it’s an excellent choice if you’re designing a robust, scalable automation architecture that demands both flexibility and long-term reliability.
Technical Specifications — Full Signal & Hardware Details
| Specification | Description |
|---|---|
| Module Type | 16‑channel Isolated Analog Input Module |
| Supported Input Signal Types | 4–20 mA DC; 1–5 V DC; –10 to +10 V DC PLC Masters Ltd.+1 |
| Input Channels | 16, each electrically isolated PLC Masters Ltd.+1 |
| Input Impedance | ~100 kΩ (voltage input) PLC Masters Ltd.+1 |
| Current‑loop Input Resistance | 270 Ω (at 20 mA) to 350 Ω (at 4 mA) when powered; ≥ 500 kΩ when unpowered AutoModuleXpert Ltd.+1 |
| Allowable Input Current | Up to 24 mA Amikon Limited+1 |
| Resolution | 16‑bit A/D conversion PLC Masters Ltd.+1 |
| Accuracy | ±16 µA (≈ ±0.1% of full scale) PLC Masters Ltd.+1 |
| Data Update Rate | Every 10 ms Amikon Limited+1 |
| Transmitter Power Supply (for 2‑wire transmitters) | 19.0–25.5 V DC (max 25 mA per channel) PLC Masters Ltd.+1 |
| Signal Isolation | Full channel-to-system isolation; withstands 1500 V AC (input to system) for 1 min PLC Masters Ltd.+1 |
| Transmitter Configuration | Per‑channel selectable for 2‑wire or 4‑wire transmitters via pin settings Amikon Limited+1 |
| Operating Temperature Range | –25 °C to +70 °C 6G Controls+1 |
| Maximum Power Consumption | 230 mA (5 V DC), 540 mA (24 V DC) PLC Masters Ltd.+1 |
| Weight | ~0.3 kg PLC Masters Ltd.+1 |
| Interface / Connection Options | Supports KS‑cable interface adapter (suffix /K4A00), enabling connection to external terminal blocks or cables (e.g. AEA4D terminal board) |
