A DCS Q Co., Ltd. - PLC and DCS Industrial Control Equipment Wholesale
Introduction — High‑Density, Reliable Analog Input for Modern DCS
The Yokogawa AAI143‑S50 Analog Input Module is engineered to provide stable, accurate signal acquisition for process control and automation systems. With up to 16 isolated input channels supporting standard 4–20 mA (and optionally 1–5 V) signals, it is ideal for installations demanding high channel density, robust electrical isolation, and dependable performance. Built for industrial environments and designed to integrate into DCS frameworks, this module helps you streamline instrumentation, reduce wiring complexity, and maintain signal integrity across multiple sensors.
Technical Specifications — Detailed Performance & Physical Attributes
| Specification | Description |
|---|---|
| Module Type | 16‑channel Isolated Analog Input Module |
| Input Signal | 4–20 mA DC (also compatible with 1–5 V DC in some variants) PLC Masters Ltd.+1 |
| Number of Channels | 16 isolated inputs Ubest Automation Limited+1 |
| Allowable Input Current | Up to 24 mA per channel Ubest Automation Limited+1 |
| Input Resistance (Power ON) | ~ 270 Ω (at 20 mA) to ~ 350 Ω (at 4 mA) Ubest Automation Limited+1 |
| Input Resistance (Power OFF) | ≥ 500 kΩ Ubest Automation Limited+1 |
| Accuracy (Current Input) | ±16 µA Ubest Automation Limited+1 |
| Data Update Period | 10 ms per channel Ubest Automation Limited+1 |
| Transmitter Power Supply (for 2‑wire transmitters) | 19.0 V DC (min at 20 mA) — up to 25.5 V DC (at 0 mA), output current limited to 25 mA Ubest Automation Limited+1 |
| Isolation / Withstand Voltage | 1500 V AC (input to system) for 1 minute instrumentsindustry.com+1 |
| Power Supply | 24 V DC nominal Ubest Automation Limited+1 |
| Mounting / Connection Options | Compatible with pressure‑clamp terminals, MIL connector cable, or dedicated cable (e.g. KS‑cable interface adapter) Ubest Automation Limited+1 |
| Weight | ~ 0.3 kg |
