The Yokogawa AAI143-S50/ATA4S-00 is a high-performance 16-channel isolated analog input module designed for critical process automation. It supports 4–20 mA current inputs and ensures electrical isolation between the field side and system, enhancing safety and reducing interference. It includes a pressure clamp terminal block (ATA4S-00) for efficient wiring.

Technical Specifications

Applications

• Process control in refineries and petrochemical plants

• Analog current signal acquisition in power stations

• Field input monitoring in DCS and FCS systems

• SCADA system integration

• Measurement in utility automation

Product Advantages

• 16-channel high-density analog input

• Galvanic isolation enhances reliability and safety

• Fast 10 ms data update suitable for real-time control

• HART support enables smart device communication

• Dedicated power supply for 2-wire transmitters

• Easy field wiring using pressure clamp terminals

Frequently Asked Questions

Q1: What type of input signals does the AAI143 accept?

A1: It accepts 4–20 mA DC current input signals.

Q2: Is channel isolation provided?

A2: Yes, each of the 16 channels is electrically isolated from the system.

Q3: Does the AAI143 support HART communication?

A3: Yes, HART communication is available with compatible FCS systems.

Q4: What is the power supply range for 2-wire transmitters?

A4: 19.0 V or higher at 20 mA, with a maximum of 25.5 V at 0 mA.

Q5: How accurate is the input measurement?

A5: The module has an accuracy of ±16 µA.

Q6: Can it be used in redundant systems?

A6: Yes, it supports dual-redundant configuration for high availability.

Q7: What is the isolation rating?

A7: 1500 V AC for 1 minute between the input and system.

Q8: How often is data updated?

A8: Every 10 milliseconds.

Q9: What are the external connection options?

A9: Pressure clamp terminal block, MIL connector, and KS1 cable are supported.

Q10: What are its physical dimensions and weight?

A10: 107.5 × 32.8 × 130 mm; weight is 0.3 kg.