The AAI841-H00 S2 is an analog input/output (I/O) module designed for industrial process automation and integration with

Yokogawa’s CENTUM VP DCS. It plays a key role in converting analog field signals into data

 the control system can process and vice versa.

Frequently Asked Questions

1. What does “S2” in the model number mean?

Answer:
“S2” is a hardware revision or style code used by Yokogawa to identify updated internal components or manufacturing standards, while preserving

compatibility with previous generations and system interfaces.

2. How many analog channels does this module support?

Answer:
The standard configuration provides 8 analog input and 8 analog output channels. There are variants or configurations

 where more input channels are supported based on system architecture.

3. What types of signals are supported?

Answer:
It primarily supports 4–20 mA DC current loop signals — the standard

 for industrial analog sensors and actuators.