Product Description

The AAV142-S50 is a high-density isolated analog input module engineered for the Yokogawa Electric Corporation CENTUM VP distributed control system (DCS). It is specifically designed to interface with standard 4–20 mA DC current signals, delivering stable and accurate data acquisition for process instrumentation.

This module provides 16 isolated input channels, enabling a compact I/O footprint while maintaining excellent channel-to-channel and system isolation. It ensures high signal integrity and noise immunity in demanding industrial environments.

Typical field devices include:

• Pressure transmitters

• Flow meters

• Temperature transmitters

• Other 4–20 mA analog instruments

Technical Specifications

Application Context

In heavy industries such as petrochemical refining and power generation, the AAV142-S50 serves as the primary interface between field instrumentation and control logic.

Its 10 ms refresh rate supports:

• Precise PID control

• Real-time analog monitoring

• Safety interlock systems

• Stable operation in electrically noisy environments

Robust isolation design enhances system reliability and prevents cross-channel interference.

Frequently Asked Questions

Does this module support HART communication?
No. The AAV142-S50 is a standard analog input module. For HART capability, the AAI143 model is typically required.

What is the difference between the S50 and S53 suffix?
The S50 suffix denotes standard environmental specifications, while higher suffixes (such as S53) may indicate enhanced protection like G3 conformal coating for corrosive environments.