Product Introduction

The Yokogawa AAI835-S00 is a high-performance analog input module designed for the CENTUM VP and CS 3000 integrated production control systems. This module plays a critical role in process automation by receiving multiple analog signals and converting them into digital data for processing within the Distributed Control System (DCS). Featuring 16 input channels, the AAI835-S00 supports differential inputs and is capable of handling a variety of analog signals including 4-20mA, 1-5V, and thermocouple signals with exceptional accuracy and stability.

Yokogawa has engineered the AAI835-S00 to meet the highest industrial standards, ensuring long-term operational reliability in complex and harsh industrial environments. This module is especially suitable for applications requiring scalable, safe, and flexible control systems.

Product Advantages

• High Input Channel Density: Supports 16 differential analog input channels in a compact module, reducing panel space and installation effort.

• Flexible Signal Compatibility: Accepts a broad range of input signals such as 4–20 mA, 1–5 V, and other analog signal formats used in industrial process control.

• Advanced Noise Filtering: Built-in high-performance noise suppression for increased measurement accuracy in noisy environments.

• Redundancy Support: Designed to operate within redundant system configurations for enhanced system availability and fault tolerance.

• Hot Swap Capability: Enables module replacement without shutting down the system, thereby ensuring minimal process interruption.

• Diagnostic Functionality: Supports self-diagnosis and input circuit monitoring for quick identification of faults or abnormalities.

• Long-Term Stability: Delivers stable performance over extended operational periods, making it ideal for critical process industries.

Technical Specifications

Applications

The Yokogawa AAI835-S00 analog input module is widely used in the following industries and applications:

• Oil and Gas: Monitoring and control of process variables such as temperature, pressure, and flow in upstream, midstream, and downstream operations.

• Power Generation: Real-time signal acquisition from sensors in boilers, turbines, and auxiliary systems.

• Chemical Processing: Measurement and regulation of critical process variables in batch and continuous processes.

• Water and Wastewater Treatment: Accurate monitoring of environmental variables such as pH, turbidity, and dissolved oxygen.

• Pharmaceutical Industry: Ensures compliance with strict quality control standards through precise signal acquisition.

• Food and Beverage: Monitoring temperatures, flow rates, and pressure in automated production lines.

Compatible Models

The AAI835-S00 is designed to operate within the CENTUM VP and CS 3000 DCS platforms and is compatible with the following Yokogawa modules:

• AAI141-S00 (Analog Input Module)

• AAI143-S00 (Analog Input with HART)

• AAI841-S00 (Remote I/O Analog Input)

• AAI835-H00 (Analog Input with HART Support)

• ADV151-P00 (Digital Input Module)

• ADV551-P00 (Digital Output Module)

Installation Instructions

1. Unpack and Inspect: Carefully remove the AAI835-S00 module from its packaging. Check for physical damage or missing components.

2. Mounting: Install the module into the appropriate base unit (e.g., NFPW331 or equivalent). It supports both DIN rail and panel mounting through the system’s mounting base.

3. Wiring: Connect field wiring to the terminal block. Ensure each analog signal is wired to its corresponding differential input terminal, following the wiring diagram in the user manual.

4. Check Signal Polarity: For current and voltage signals, confirm polarity to prevent signal error or damage.

5. Power Supply: The module receives power from the main system backplane. No additional power connection is needed.

6. System Configuration: Configure the input channel types and ranges using Yokogawa’s engineering tool (e.g., CENTUM VP’s engineering workstation).

7. Module Testing: Perform module diagnostics via the system software to confirm successful installation.

8. Commissioning: Once configuration and testing are complete, validate live data acquisition from field instruments.

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Frequently Asked Questions (FAQ)

Q1: What type of signals can the AAI835-S00 handle?
A1: The AAI835-S00 supports a variety of analog input signals, including 4–20 mA, 1–5 V, and other standard analog process signals used in industrial automation.

Q2: Can the AAI835-S00 be hot-swapped without shutting down the system?
A2: Yes, the module is designed with hot-swap capability, allowing you to replace it without interrupting the running system.

Q3: Is the AAI835-S00 compatible with HART communication?
A3: The AAI835-S00 does not support HART directly. For HART functionality, use the AAI835-H00 or AAI143-S00 models.

Q4: What is the main difference between AAI835-S00 and AAI141-S00?
A4: The AAI835-S00 supports 16 differential input channels and multiple signal types, while the AAI141-S00 supports 8 voltage input channels without HART.

Q5: What systems is the AAI835-S00 compatible with?
A5: It is fully compatible with Yokogawa’s CENTUM VP and CS 3000 systems.

Q6: What certifications does the AAI835-S00 carry for industrial use?
A6: The module is CE, CSA, and ATEX certified, ensuring safe use in various industrial environments.