AAI143-H53/K4A00 Yokogawa 16-Channel HART Analog Input Module

The Yokogawa AAI143-H53/K4A00 is a 16-channel isolated analog input module designed to acquire 4-20 mA signals from field transmitters. It supports HART digital communication, allowing the module to handle analog process signals alongside digital communication with compatible field instruments. Furthermore, this configuration includes ISA Standard G3 and extended temperature options, together with an ATK4A-00 KS Cable Interface Adapter.

Input Signal and HART Communication

The AAI143-H53/K4A00 accepts 4-20 mA DC signals through 16 electrically isolated input channels. Each channel can be configured for either a 2-wire or 4-wire transmitter using its setting pin.

In addition, the HART option supports digital communication with compatible field instruments. This allows the analog input function and HART communication to operate through the same field signal wiring.

Isolation and Signal Accuracy

The module provides 1500 V AC withstand voltage between the input channels and the system for one minute. This isolation helps separate field-side signal circuits from the system side.

Meanwhile, the 10 ms data update period supports regular acquisition of changing process signals. The specified input accuracy is +/-16 uA, and the input resistance varies according to the module's power state.

Model Configuration

The ordering code identifies the communication, environmental and connection options:

• AAI143: 16-channel isolated analog input module for 4-20 mA signals.
• H: Supports HART digital communication.
• 5: Standard type without explosion protection.
• 3: Includes ISA Standard G3 and extended temperature options (-20 to 70 deg C).
• /K4A00: Includes the ATK4A-00 KS Cable Interface Adapter for connection to an AEA4D Terminal Board.

Therefore, this version combines HART communication, the G3 environmental option and a KS cable interface configuration. The suffix code 5 identifies a non-explosion-protected configuration.

Technical Specifications

Ordering Code Details

Transmitter Connection and Power Supply

The module supports both 2-wire and 4-wire transmitters. Users can select the transmitter configuration independently for each channel through the setting pins.

For 2-wire transmitters, the module supplies the required loop power. The specified supply voltage is at least 19.0 V at 20 mA, with a maximum of 25.5 V at 0 mA. Furthermore, external wiring voltage drops should be considered when checking the minimum operating voltage of connected transmitters.

Frequently Asked Questions

Q: Does the AAI143-H53/K4A00 support HART communication?

A: Yes. The H suffix identifies the HART communication option. The module supports digital communication with compatible HART field instruments over its 4-20 mA input channels.

Q: What is the function of the /K4A00 option?

A: The /K4A00 option provides an ATK4A-00 KS Cable Interface Adapter for connecting the module to an AEA4D Terminal Board.

Q: Is the AAI143-H53/K4A00 suitable for elevated-temperature environments?

A: Yes. The suffix 3 specifies the ISA Standard G3 option and an extended operating temperature range of -20 to 70 deg C. However, this model does not include explosion protection.