Yokogawa AAI141-H50 S2 Analog Input Module

Product Description

Configured for 4-20 mA DC signal acquisition in Yokogawa CENTUM VP and CS 3000 DCS platforms, the Yokogawa AAI141-H50 S2 (AAI141 Analog Input Module) provides direct electrical conversion of field transmitter current signals into digital process data.

Suffix Breakdown & Model Matrix

Hardware Specifications

HART Loop Communication and DCS Signal Processing

The AAI141-H50 S2 module processes standard 4-20 mA transmitter signals while maintaining HART digital communication on the same current loop. Therefore, the CENTUM VP or CS 3000 system can access transmitter parameters, diagnostics, and configuration information without interrupting analog measurement transmission.

The module supports channel-level transmitter configuration for 2-wire and 4-wire devices. In addition, its non-isolated input structure uses a common ground arrangement, requiring correct field wiring separation and grounding practices during installation.

Frequently Asked Questions

Q: Does the AAI141-H50 S2 support HART communication without an additional communication module?
A: Yes. The module integrates HART protocol handling directly on the 4-20 mA input channels.

Q: Can the AAI141-H50 S2 receive signals from both 2-wire and 4-wire transmitters?
A: Yes. Each channel supports configurable connection methods for 2-wire and 4-wire transmitters.

Q: Is the input channel electrically isolated from other channels?
A: No. The module uses a non-isolated common ground input configuration. Field wiring must follow Yokogawa grounding and shielding requirements.

Field Installation Guidelines

• Install the module in the designated CENTUM VP or CS 3000 I/O node rack position according to the system hardware configuration.
• Verify that field transmitter wiring matches the selected 2-wire or 4-wire configuration before applying power.
• Separate analog signal cables from high-voltage power cables and switching circuits to reduce electrical interference.
• Connect cable shields according to the site grounding standard and avoid multiple grounding points that may create ground loops.
• Confirm transmitter loop polarity and current direction before commissioning.
• Check HART communication performance after wiring completion by verifying digital access to transmitter parameters.

Other Attributes

• Country of Origin: Japan/Singapore
• Lead Time: In Stock, 2 Working Days

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