Description
Product Description
Overview
The AAI143-S50/A4S10 by Yokogawa is a 16-channel analog input module designed for precise current signal acquisition in distributed control systems (DCS). Each channel is fully isolated, allowing robust dual-redundant configurations and reliable HART communication with transmitters and valve positioners. The module enables simultaneous analog 4-20 mA signal exchange and digital HART variable communication with field control stations (FCS). This module is part of a series of eight HART-capable analog I/O modules, offering flexibility for various process control applications.
Technical Specifications
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Model / Part Number: AAI143-S50/A4S10
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Type: Analog Input Module (Current Input)
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Number of Channels: 16 isolated input channels
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Input Signal Range: 4 to 20 mA
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Dual-Redundant Support: Yes
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Digital Communication Protocol: HART
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Input Resistance: 250 ohms typical at 20 mA
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Accuracy: ±20 microamps
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Withstanding Voltage: 500 V AC between input and system for 1 minute
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Explosion Protection: Standard, non-explosion-proof type
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Weight: 0.5 kg
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Compatibility: Field transmitters, valve positioners, and FCS
Applications
The AAI143-S50/A4S10 is optimized for continuous process monitoring in chemical plants, power generation facilities, water treatment systems, and other industrial environments requiring precise current measurement. Its dual-redundant capability ensures operational reliability in critical systems.
FAQ
Q: Can this module operate in hazardous areas?
A: No, the standard AAI143-S50/A4S10 does not include explosion-proof certification.
Q: How many channels can a single module support?
A: This module provides 16 isolated channels. For higher channel counts, multiple modules can be integrated.
Q: Is HART communication supported?
A: Yes, the module exchanges analog 4-20 mA signals and supports HART variable communication simultaneously.
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