The Yokogawa AAB841-S50 S2 Analog I/O Module is a high-performance module designed for precise analog signal handling within Yokogawa’s DCS (Distributed Control System) environment. It provides both analog input and output functionalities, enabling accurate monitoring and control of industrial processes.

This module supports multiple analog channels, offering high resolution and fast response times to ensure reliable and real-time process control. Its design incorporates robust channel-to-channel and backplane isolation to minimize electrical interference, making it suitable for demanding industrial conditions such as petrochemical plants, power generation, and manufacturing automation.

The AAB841-S50 S2 module allows seamless integration into standard Yokogawa control racks, and its modular architecture facilitates easy maintenance, upgrades, or replacement without disrupting system operations. LED indicators provide real-time feedback for module status, ensuring quick troubleshooting and operational awareness.

Product Specifications

Applications

• Process Control: Provides accurate real-time analog monitoring and control for complex industrial processes.

• Industrial Automation: Interfaces with sensors and actuators for fully automated operations.

• Data Acquisition: Collects high-speed analog data for analysis, predictive maintenance, and logging.

• Distributed Control Systems: Functions within Yokogawa DCS for integrated process control and monitoring.

• Signal Conversion: Converts field analog signals into digital signals for processing and converts processed data back into field signals.

• Redundant System Configurations: Supports redundant operation for fail-safe process control applications.

Advantages

• High Precision: 16-bit resolution ensures accurate analog measurements and control.

• Multi-Signal Compatibility: Supports a wide range of voltage and current input/output signals.

• Fast Response: Typical response time under 2 ms allows real-time monitoring and control.

• Robust Isolation: Electrical isolation reduces channel interference and enhances system reliability.

• Diagnostic Feedback: LED indicators provide clear module status and fault indications.

• Modular Architecture: Enables easy installation, replacement, and maintenance within standard Yokogawa racks.

• Industrial Reliability: Operates in wide temperature and humidity ranges suitable for harsh industrial environments.

FAQ

1. What types of analog signals does the AAB841-S50 S2 support?

   It supports 0–20 mA, 4–20 mA current signals, and 0–10 V, ±10 V voltage signals.

2. What is the resolution of A/D and D/A conversion?

   The module provides 16-bit resolution for both input and output channels.

3. How is channel-to-channel isolation achieved?

   Each input and output channel is galvanically isolated at 1500 Vrms from other channels and from the system backplane.

4. What is the typical response time of the module?

   Under normal operation, the response time is less than 2 milliseconds.

5. Can it handle single-ended and differential inputs?

   Yes, the module supports both single-ended and differential analog input configurations.

6. How does the module indicate faults or errors?

   LED indicators display module power status, operational health, and error conditions.

7. Is the module hot-swappable?

   No, it must be powered down before insertion or removal to prevent disturbances.

8. What are the maximum safe input voltages and currents?

   Maximum input is ±10 V for voltage and 0–20 mA for current signals.

9. Can the analog outputs interface with PLC systems?

   Yes, the module’s analog outputs can directly interface with PLCs and other control systems.

10. Does the module support high-speed real-time data acquisition?

    Yes, with 1 ms per channel conversion time, it is suitable for real-time process monitoring.