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Product Description
Overview
The Yokogawa AAI143-H00/A4S00 is a high-precision analog input module offering 16 isolated channels for 4-20 mA current signals. Designed for industrial control systems, it supports both basic and HART-enabled configurations, providing reliable data acquisition with minimal temperature drift. The module can accommodate dual-wire and four-wire transmitters and features flexible external communication options, including pressure clamp terminals and MIL connector cables.
Key Features
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16 fully isolated input channels
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Input current range: 4 to 20 mA
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High voltage isolation of 1500 V AC for 1 minute
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Configurable for 2-wire or 4-wire transmitters per channel
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Supports HART communication protocol (H type)
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Compatible with dedicated KS1 cables and pressure clamp terminals
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Low drift due to ambient temperature changes: ±16 µA/10°C
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Compact and lightweight: 0.3 kg
Technical Specifications
| Specification |
Details |
| Model |
AAI143-H00/A4S00 |
| Input Channels |
16 isolated channels |
| Input Signal |
4 to 20 mA |
| Maximum Input Current |
24 mA |
| Isolation Voltage |
1500 V AC between input and system for 1 minute |
| Input Resistance |
Power ON: 270 Ohm (20 mA) to 350 Ohm (4 mA); Power OFF: 500 kOhm minimum |
| Accuracy |
±16 µA |
| Data Update Rate |
10 ms |
| Transmitter Supply Voltage |
19.0 V minimum at 20 mA, 25.5 V maximum at 0 mA (current limit 25 mA) |
| Transmitter Configuration |
2-wire or 4-wire selectable per channel |
| Temperature Drift |
±16 µA per 10 °C |
| Maximum Current Consumption |
230 mA (5 V DC), 540 mA (24 V DC) |
| External Communication |
Pressure clamp terminal, MIL connector cable, dedicated KS1 cable |
| HART Support |
Yes (H type) |
| Weight |
0.3 kg |
Applications
Ideal for process control, industrial monitoring, and automation systems, the AAI143-H00/A4S00 ensures accurate current measurement in both standard and HART-enabled configurations. Its isolation and redundancy compatibility make it suitable for critical applications where signal integrity is essential.
FAQ
Q: Can this module support HART-enabled devices?
A: Yes, the H variant provides full HART protocol compatibility.
Q: What type of transmitters can it work with?
A: The module supports both 2-wire and 4-wire transmitters per channel.
Q: How is external communication handled?
A: Communication is possible through pressure clamp terminals, MIL connector cables, or dedicated KS1 cables.
Comparison with Similar Models
Compared to the AAI143-H00 basic type, the AAI143-H00/A4S00 adds pressure clamp terminal support and enhanced connectivity options, making it more versatile for industrial setups.
