AAI841-S00 S2 Yokogawa Analog I/O Module

Overview

Configured for analog signal acquisition and output processing in Yokogawa CENTUM VP and CENTUM CS 3000 DCS platforms, the Yokogawa AAI841-S00 S2 (AAI841 Analog I/O Module) provides direct electrical execution for 8 input channels and 8 output channels. The module processes configured 4-20 mA signals and supports specified voltage input configurations, while HART communication support enables digital communication with compatible field instruments.

Suffix Breakdown & Model Matrix

Hardware Specifications

4-20 mA HART Loop Protocol

The AAI841-S00 S2 processes analog process signals through its 8 input and 8 output channels. Input channels accept 4-20 mA DC signals or configured 1-5 V signals, while output channels provide 4-20 mA DC signals.

In addition, HART communication support allows compatible field instruments to exchange digital device information over supported analog process loops. Because the module uses a non-isolated channel configuration with a common ground reference, field wiring and grounding arrangements must prevent unwanted ground potential differences.

Frequently Asked Questions

Q: Does the Yokogawa AAI841-S00 S2 provide isolated channels?
A: No. The provided specification identifies the module as non-isolated, with channels sharing a common ground reference.

Q: What analog signals does the AAI841-S00 S2 support?
A: The input supports 4-20 mA DC or 1-5 V depending on configuration. The output provides 4-20 mA DC signals.

Q: What power supply loading should be considered during installation?
A: The module has a maximum current consumption of 310 mA at 5 VDC and 500 mA at 24 VDC. The associated system power capacity should accommodate these specified loads.

Field Installation Guidelines

Install the AAI841-S00 S2 according to the applicable Yokogawa system hardware arrangement and approved module mounting procedure.

• Verify the model and suffix code before installation.
• Isolate system power before inserting or removing the module unless the applicable Yokogawa hardware documentation explicitly permits energized replacement.
• Confirm the configured input and output signal types before connecting field wiring.
• Maintain separation between analog signal wiring and high-voltage or high-current power wiring.
• Apply shield grounding according to the system grounding design and field cable specification.
• Check common ground connections because the module channels are specified as non-isolated.
• Use the specified pressure clamp terminal, KS cable, or MIL connector cable arrangement.
• Verify HART wiring compatibility when connecting HART-enabled field instruments.
• Confirm supply capacity against the specified 5 VDC and 24 VDC module current requirements.

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