The Yokogawa AAI543-H50/A4D00 is a high-performance 16-channel isolated current output module designed for use with Yokogawa’s FIO system. It supports 4–20 mA signal output with integrated HART communication, enabling both precise analog control and digital device diagnostics. With robust isolation, dual-redundant capability, and fast or standard switch-over options, it is ideal for critical industrial automation applications.

Technical Specifications

Applications

• Industrial process control systems

• Distributed control system (DCS) output interface

• Integration with smart HART field devices

• Redundant control architectures for high-reliability operations

• Control of actuators, valves, and analog-driven devices in oil & gas, power generation, and chemical plants

Advantages

• High Reliability – Dual-redundant support ensures continuous operation.

• Signal Isolation – Protects control system from field-side noise and interference.

• HART Integration – Enables remote device monitoring and diagnostics.

• Fast Response Option – Minimizes downtime in critical control applications.

• Compact Design – Space-efficient for control cabinets.

• Wide Compatibility – Works with multiple Yokogawa FCS models.

FAQ

Q1: What is the output range of the AAI543-H50/A4D00?

A1: It provides a 4–20 mA current output.

Q2: How many channels does it support?

A2: It has 16 isolated output channels.

Q3: Does it support HART communication?

A3: Yes, it supports HART protocol for enhanced device communication.

Q4: What is the maximum load resistance allowed?

A4: 0–750 Ω.

Q5: Can it be used in a redundant configuration?

A5: Yes, it supports dual-redundant operation with standard or fast switch-over.

Q6: What is the switch-over time in redundant mode?

A6: Standard type: 100 ms; Fast type: 2 ms.

Q7: What industries commonly use this module?

A7: Oil & gas, petrochemical, power generation, water treatment, and manufacturing.

Q8: What is the accuracy of the module?

A8: ±48 µA.

Q9: What isolation level does it provide?

A9: 1500 V AC between output and system.

Q10: What are its physical dimensions and weight?

A10: 107.5 × 32.8 × 130 mm, 0.4 kg.