Product Description

The AAI841-S00 S2 is a high-density hybrid analog module for the Yokogawa CENTUM VP distributed control system. This versatile unit provides 8 channels of 4–20 mA input and 8 channels of 4–20 mA output, managing up to 8 complete control loops in a single slot.

As a non-isolated "Standard Type" module, it offers compact, cost-effective performance for applications where field devices share a common ground. The S2 revision ensures modern hardware compatibility and long-term reliability in existing DCS installations.

Key Features

• Dual-Function Capacity: 8 inputs + 8 outputs in one slot, optimizing cabinet space

• Redundancy Ready: Supports dual-redundant configurations with 100 ms switch-over time

• Integrated Transmitter Power: Powers 2-wire transmitters directly (14.8 V min at 20 mA)

• Fast Response: 10 ms data update period; 40 ms output response for high-speed loops

• Safety Diagnostics: Open-circuit detection (<0.65 mA) provides real-time alerts

Technical Specifications

Industrial Applications

The AAI841-S00 S2 is commonly used in general process manufacturing, factory automation, and utility monitoring. It is ideal for:

• Localized control skids

• HVAC automation

• Water treatment systems

It is perfect for applications where 4–20 mA signaling is standard and full galvanic isolation is not required.

Technical FAQ

Q: Can the AAI841-S00 S2 support HART communication?
A: No. The standard S-series (AAI841-S00) does not support HART. For smart transmitters requiring digital diagnostics, the AAI841-Hxx variant should be used.

Q: What is the benefit of the non-isolated design?
A: Non-isolated architecture allows a compact, cost-effective module. Ideal for systems where all field instruments share the same power source or where ground potential differences are negligible.