





Introduction — Smart HART Input Designed for Modern Industrial Demands
The Yokogawa AAI143-H53/K4A00 Analog Input Module is a high-integrity, HART-enabled 16-channel input solution built for Yokogawa’s CENTUM and ProSafe-RS control systems. The K4A00 variant features a KS-cable interface, offering fast installation, clean wiring, and improved maintenance efficiency.
This module delivers stable and accurate 4–20 mA measurement, supports 2-wire transmitter power, and enables remote HART diagnostics—making it a preferred choice for facilities aiming to modernize operations, enhance asset health, and reduce maintenance workloads.
Technical Specifications — Electrical Performance & Physical Data
| Specification | Description |
|---|---|
| Module Type | 16-channel Isolated Analog Input Module (HART, K4A00 KS-Cable Interface) |
| Input Signal Type | 4–20 mA DC |
| Channels | 16 independent, galvanically isolated |
| Input Impedance | 270–350 Ω (varies with input current) |
| Accuracy | ±16 µA |
| HART Support | Yes — bi-directional digital communication |
| Transmitter Power Supply | 19–25.5 V DC, max 25 mA/channel |
| Update Period | Approx. 10 ms per channel |
| Isolation Voltage | 1500 V AC (field–system) |
| Power Consumption | 5 V DC @ 230 mA; 24 V DC @ 540 mA |
| Operating Temperature | –20°C to +60°C |
| Dimensions | 130 mm × 25 mm × 180 mm |
| Weight | ~0.29 kg |
| Wiring Interface | K4A00 — KS-cable termination for simplified wiring |
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