AAI543-H50/A4S00 | Yokogawa | Analog Output Module

The Yokogawa AAI543-H50/A4S00 is a 16-channel isolated analog output module that generates 4-20 mA signals for control of external field devices. It supports HART digital communication and standard switch-over response in redundant configurations without explosion protection. The specified configuration includes a pressure clamp terminal block, model ATA4S-00, for field wiring.

Technical Specifications

Output Signal and HART Communication

The AAI543-H50/A4S00 provides 4-20 mA analog output signals through 16 isolated channels. The controller uses these outputs to send analog commands to field devices. The 0-750 ohm allowable load resistance defines the supported load range for the output circuit.

The HART configuration adds digital communication to the analog output channels. This allows supported HART-enabled field devices to exchange digital information over the current loop, subject to the requirements of the connected equipment and system configuration.

Redundant Configuration and Response

The suffix .5 identifies the standard switch-over response configuration without explosion protection. In a redundant arrangement, the switch-over response determines how the system handles the transition between redundant paths. The actual behavior depends on the system configuration and associated equipment.

The module's specified data update period is 10 ms. This parameter describes the update interval for module data and should not be interpreted as the complete end-to-end response time of the control loop.

Terminal Block and Connection Options

The /A4S00 option specifies a pressure clamp terminal block, model ATA4S-00. The provided connection information also identifies MIL connector cables and a dedicated KS1 cable as external communication connection options.

When checking a replacement or spare module, verify the complete model number and terminal block arrangement. Similar AAI543 suffixes can indicate different communication, switch-over, environmental or connection configurations.

Model and Suffix Identification

Other documented configuration codes include:

These codes describe available configurations and do not mean that every option can be combined with the AAI543-H50/A4S00. Confirm the applicable ordering rules before selecting a different suffix.

Frequently Asked Questions

Q: How many analog output channels does the AAI543-H50/A4S00 provide?

A: It provides 16 isolated analog output channels, each specified for a 4-20 mA signal.

Q: Does the AAI543-H50/A4S00 support HART communication?

A: Yes. The H suffix identifies the HART digital communication configuration. Confirm that the connected field devices and control system support the required HART functions.

Q: Which terminal block is specified for this model?

A: The /A4S00 option identifies the pressure clamp terminal block ATA4S-00. Check this terminal block model when verifying wiring arrangements or sourcing a replacement.