Yokogawa AAI835 4-Channel Analog I/O Module

The Yokogawa AAI835 is an advanced, high-performance analog I/O module tailored for industrial automation applications. It offers isolated channels to improve reliability and minimize interference, making it ideal for control systems that require precise and stable analog signal processing.

Key Specifications

The AAI835 module is designed to handle both input and output signals with high accuracy and reliability. Below are the detailed technical specifications:

Parameter	Specification
Manufacturer	Yokogawa
Model	AAI835
Module Type	4-Channel Analog I/O Module
Number of Channels	4 Channels Input and 4 Channels Output
Input Signal Range	4 to 20 mA
Output Signal Range	4 to 22 mA
Allowable Input Current	25 mA
Maximum Current Consumption	300 mA (5VDC), 452 mA (24VDC)
Data Update Period	10 ms
Isolation	Isolated Channels
Digital Communication Support	Available (Optional with HART Protocol)
Explosion Protection	Optional (Explosion-Protected Model)
Temperature Range	-20°C to 70°C (with ISa standard GS option)
Input/Output Type	Standard, with HART, or with Explosion Protection
Mounting Type	Standard Mounting
Power Supply	24V DC

Features & Benefits

Isolated Channels: The AAI835 features isolated analog input and output channels, which helps prevent signal interference and enhances the overall system reliability.
Wide Signal Range: It supports a wide range of input and output signals (4-20 mA for input and 4-22 mA for output), offering compatibility with many industrial systems.
Flexible Power Options: This module operates on 5VDC or 24VDC power, providing flexibility in various system designs.
HART Protocol Support: With the optional HART protocol, the AAI835 can integrate digital communication for improved diagnostics and configuration, enhancing system efficiency.
Explosion-Proof Design: The AAI835 module is available with explosion protection, making it suitable for hazardous environments.
Fast Data Updates: The module’s data update period is just 10 ms, ensuring quick and efficient signal processing for real-time control applications.

Applications

The Yokogawa AAI835 is ideal for industrial applications that require precise and reliable analog signal processing. Key industries and applications include:

Process Control Systems: Use the module for continuous monitoring and control of industrial processes in sectors such as oil & gas, chemical manufacturing, and power generation.
Automation Systems: In automation systems, this module helps ensure accurate data acquisition and control of process parameters.
Remote Monitoring: With its flexible input/output capabilities and optional HART communication, the AAI835 enables remote monitoring and diagnostics in complex industrial setups.