Yokogawa AAI141-H00 Analog Input Module

Product Description

Configured for 4-20 mA process signal acquisition in a Yokogawa CENTUM control system, the Yokogawa AAI141-H00 (AAI141 analog input module) provides 16 non-isolated analog input channels. Yokogawa documentation identifies the AAI141 as a 16-channel, 4-20 mA DC analog input module. (yokogawa.com)

Hardware Specifications

The AAI141 accepts standardized 4-20 mA DC signals from 2-wire or 4-wire transmitters. Yokogawa specifies 16 non-isolated input channels, a 10 ms data update period, and a 100 ms step response time. (yokogawa.com)

4-20 mA Input and Channel Architecture

The AAI141 converts 4-20 mA DC process signals into digital data for the control system. Each module provides 16 input channels, while the input circuits remain non-isolated. Yokogawa also specifies support for 2-wire and 4-wire transmitter configurations through channel settings. (yokogawa.com)

The documented input resistance varies with loop current. Yokogawa specifies 400 ohm at 20 mA and 1000 ohm at 4 mA with power ON. The allowable input current is 27 mA. (yokogawa.com)

HART and DCS Signal Interface

The supplied model designation should be checked against the installed system documentation before replacement. Yokogawa separately identifies AAI141-H as a 16-channel, 4-20 mA non-isolated analog input module with HART protocol. Therefore, the H00 suffix should not be assumed to indicate HART functionality without the applicable Yokogawa ordering documentation. (yokogawa.com)

Frequently Asked Questions

Q: Is the AAI141-H00 a 16-channel isolated analog input module?
A: No. Yokogawa identifies the AAI141 as a 16-channel, 4-20 mA analog input module with non-isolated inputs. (yokogawa.com)

Q: What process signal does the AAI141 accept?
A: The documented input signal is 4-20 mA DC. The module can interface with 2-wire or 4-wire transmitters according to the specified channel configuration. (yokogawa.com)

Q: What are the documented update and response times?
A: Yokogawa specifies a 10 ms data update period and a 100 ms step response time. (yokogawa.com)

Field Installation Guidelines

Install the module only in the Yokogawa system and I/O configuration specified for the AAI141 family. Verify the module identity and terminal arrangement before wiring.

Use the specified 4-20 mA signal wiring for each channel. Keep analog signal cables separated from high-voltage and high-current conductors to reduce electrical interference.

Because the AAI141 input channels are non-isolated, confirm the transmitter grounding and loop arrangement before energizing the circuit. Do not assume channel-to-channel galvanic isolation.

Verify the transmitter type and 2-wire or 4-wire configuration against the Yokogawa system documentation. Check polarity, loop continuity, terminal assignment, and shield termination before applying power.

For replacement work, compare the installed module designation, system revision, terminal connection method, and applicable Yokogawa hardware documentation before commissioning.

Other Attributes

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

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