Description
Product Description
Overview
The Yokogawa AAl141-H50 is a high-performance analog input module designed for integration with the CENTUM VP distributed control system. This module reliably receives standardized current or voltage signals from 2-wire or 4-wire transmitters and supports dual-redundant configurations for critical process monitoring applications.
Key Features
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16-channel non-isolated analog input
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Supports 4-20mA DC input signals
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Compatible with 1-5V DC voltage signals
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Individual channel configuration for 2-wire or 4-wire transmitters
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Transmitter power supply with overcurrent protection
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Fast data update period and response time for real-time monitoring
Technical Specifications
| Parameter |
Specification |
| Number of input channels |
16 (non-isolated) |
| Input signal |
4-20mA DC or 1-5V DC |
| Maximum allowable input |
27mA |
| Input resistance |
400 ohms at 20mA; 1000 ohms (voltage input) |
| Power OFF resistance |
500k ohms or more |
| Accuracy |
±16 microampere |
| Data update period |
10 milliseconds |
| Step response time |
100 milliseconds |
| Transmitter power supply |
14.8V or higher at 20mA, 26.4V or less at 0mA (current limit: 27mA) |
| Drift due to ambient temperature |
16 microampere per 10 degree Celsius |
| Maximum current consumption |
310mA at 5VDC, 450mA at 24VDC |
| Weight |
0.2 kg |
Applications
Ideal for process monitoring in chemical, oil & gas, and manufacturing industries, where precise signal acquisition and dual-redundant configurations are required for reliable DCS integration.
FAQ
Q: Can this module be used with both 2-wire and 4-wire transmitters?
A: Yes, each channel can be individually configured for either 2-wire or 4-wire operation.
Q: What type of signals does the module support?
A: It supports 4-20mA current signals and 1-5V DC voltage signals.
Q: Is the module isolated?
A: The AAl141-H50 module is non-isolated.
Q: Can it be used in dual redundant setups?
A: Yes, it is compatible with dual redundant configurations for high-reliability applications.
