Product Description

The AMM22 (S1–S4) is a high-density analog multiplexer module designed for integration within the CENTUM distributed control system platform by Yokogawa Electric Corporation. This module functions as a signal aggregation interface, consolidating multiple analog process variables into a single controller input, thereby reducing cabinet space requirements and field wiring complexity in large-scale industrial installations.

Engineered for precision measurement and thermal stability, the AMM22 processes low-level analog signals with high resolution and stable scan performance. It is commonly deployed in applications where numerous transmitters—such as pressure, flow, or level devices—must be monitored simultaneously without compromising signal accuracy. Its compact mechanical footprint and low power consumption make it well suited for high-density I/O configurations.

Technical Specifications

Application Scenarios

The AMM22 is widely used in oil & gas refineries, chemical processing plants, and power generation facilities. It is particularly suited for centralized monitoring of non-critical process variables, where high-density multiplexing provides a cost-effective alternative to individual analog input modules while maintaining reliable data acquisition performance.

Technical FAQ

Does the AMM22 support redundant configurations?
Yes. When installed in a compatible Yokogawa Nest or I/O rack, the module can be configured in a dual-redundant architecture to ensure continuous signal acquisition in the event of a single module failure.

What is the primary benefit of using a multiplexer instead of a standard analog input module?
The AMM22 increases the number of input channels per rack slot, reducing cost per I/O point and minimizing overall cabinet space requirements without significantly impacting measurement accuracy for non-critical loops.