Description
Product Description
Overview
The Yokogawa AA1841-S50 is a high-performance analog I/O module designed for industrial control systems. It supports up to eight input and eight output channels, allowing precise current and voltage measurement and control. The module is non-isolated but can be deployed in dual redundant configurations for enhanced system reliability.
Key Features
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Eight input channels and eight output channels
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Supports 4 to 20 mA current input and output
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Non-isolated differential input for voltage and current signals
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Compatible with dual redundant configurations
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High-speed data update and fast response times
Technical Specifications
Input/Output Characteristics
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Input Channels: 8
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Output Channels: 8
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Input Signal: 4-20 mA or 1-5 VDC
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Output Signal: 4-20 mA
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Voltage Input Allowable Range: ±1 V or more common-mode voltage
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Input Resistance: 400 Ohm at 20 mA, 1 MOhm or more for voltage input
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Output Load Resistance: 0 to 750 Ohm
Accuracy and Performance
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Input Accuracy: ±16 μA for current, ±4 mV for voltage
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Output Accuracy: ±48 μA
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Circuit-Open Detection: Less than 0.65 mA
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Data Update Period: 10 ms
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Input Step Response Time: 100 ms
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Output Step Response Time: 40 ms
Power and Protection
Applications
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Industrial process monitoring and control
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Distributed control systems
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Redundant loop configurations for critical applications
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Signal conversion and I/O expansion in automation networks
FAQ
Q: Can this module be used in a redundant system?
A: Yes, the AA1841-S50 supports dual redundant configuration for increased reliability.
Q: What signal types are supported?
A: Both current (4-20 mA) and voltage (1-5 VDC) signals are supported.
Q: Is the module isolated?
A: No, the module is non-isolated, but differential input allows precise measurement.
Q: What is the update speed for input/output signals?
A: Input data updates every 10 ms, and output step response time is 40 ms.
