Yokogawa AAI141-H00 S2 Analog Input Module

Configured for analog signal processing in CENTUM CS and CENTUM VP distributed control systems, the Yokogawa AAI141-H00 S2 (AAI141-H00 S2 Analog Input Module) provides direct physical/electrical execution.

Suffix Breakdown & Model Matrix

• AAI141-H00 S2: Base part identifier designating the 16-channel analog input module variant with HART protocol support.

Hardware Specifications

4-20 mA HART Loop Protocol and Channel Isolation

The AAI141-H00 S2 processes 16 channels of 4 to 20 mA DC analog signals originating from field transmitters such as pressure, temperature, flow, and level devices. The 4-20 mA HART loop protocol compatibility allows simultaneous transmission of primary analog process variables and advanced digital diagnostic data without signal attenuation. Channel isolation parameters and internal filtering protect the 16-bit conversion circuitry from common-mode electrical variations. Cold junction compensation (CJC) and internal thermal regulation ensure a measurement accuracy of +/-0.1% of full scale across the operating thermal range.

Frequently Asked Questions

Q: How many input channels are supported on this module?

A: The module features 16 independent input channels dedicated to 4 to 20 mA DC current signals.

Q: Does this analog input module support digital communication with field devices?

A: Yes, it incorporates built-in HART protocol support to enable digital communication and advanced device diagnostics.

Q: Can this hardware module be inserted or extracted while the rack backplane is powered?

A: System power and field loop supplies must be isolated prior to physical installation or extraction to prevent electrical arcing and backplane pin damage.

Field Installation Guidelines

• Ensure that the control cabinet mounting base or I/O nest is securely installed and properly grounded before mounting the module.
• Verify that the 24 V DC input power supply and field loop voltages are de-energized prior to connecting terminal blocks.
• Route analog input wiring away from high-voltage power lines and heavy inductive loads to prevent electromagnetic interference (EMI).
• Maintain adequate ventilation clearance around the 100 mm x 130 mm x 30 mm housing dimensions to support proper convective thermal dissipation.