Yokogawa AAB841: 8-Channel Analog I/O Module

Overview of the Yokogawa AAB841

The Yokogawa AAB841 is an advanced 8-channel analog input/output (I/O) module, specifically designed for the Yokogawa CENTUM VP DCS system. As a non-isolated module, the enables direct interaction between input and output channels, ensuring efficient data handling for industrial automation and control tasks.

Key Features of the Yokogawa AAB841

Hot-Swappable Design: The AAB841 is hot-swappable, allowing replacement without system shutdown, thus enhancing uptime in industrial environments.
Built-in Redundancy: This module features a redundancy mechanism. If one I/O module fails, the other modules continue to function, ensuring continuous operation of the system.
Comprehensive Safety Protections: The AAB841 includes safety features such as overvoltage, overcurrent, and short-circuit protection, ensuring reliable and safe operation in demanding environments.

Detailed Technical Specifications

Specification	Details
Part Number	AAB841
Input Range	1-5 V
Output Range	4-20 mA
Accuracy	±0.1% F.S
Resolution	12 bits
Sampling Rate	100 Hz
Operating Temperature Range	0°C to 55°C
Dimensions	170 x 120 x 50 mm
Weight	1 kg (2.2 lbs)
Protection Features	Overvoltage, Overcurrent, Short-circuit Protection

Applications of the Yokogawa AAB841

The Yokogawa excels in various applications within industrial automation and control systems:

Industrial Automation & Control: Used extensively in controlling and monitoring industrial processes within the Yokogawa CENTUM VP DCS.
Process Control: Ideal for precise control of continuous processes where accurate analog data input and output are required.
Laboratory Measurements: Suitable for applications requiring high-resolution measurements in laboratory environments.
Environmental Monitoring: The can monitor environmental factors like temperature, humidity, and pressure for industrial and research applications.

Conclusion

The Yokogawa is a robust, reliable analog I/O module designed for demanding automation environments. Its hot-swappable design, built-in redundancy, and comprehensive safety features make it an ideal choice for critical applications in industrial automation, process control, and environmental monitoring.