Yokogawa AAI135-S03/K4A00 Analog Input Module

Overview

The Yokogawa AAI135-S03/K4A00 is a high-precision analog input module for CENTUM VP and other Yokogawa DCS platforms. It acquires reliable 4–20 mA signals from transmitters, sensors, and flow meters. The module converts these signals into accurate digital data for process monitoring and control. Its robust design, isolation features, and redundancy support make it suitable for demanding industrial environments.

Technical Specifications

• Model: AAI135-S03/K4A00

• Type: Analog Input Module

• Input Signal: 4–20 mA DC

• Number of Channels: 8 isolated channels

• Allowable Input Current: Up to 25 mA

• Accuracy: ±16 μA

• Data Update Period: 10 ms

• Input Isolation: Isolated between channels and system

• Withstanding Voltage: 500 V AC for 1 minute (input to system and between channels)

• Transmitter Power Supply: 15.0 V or higher at 20 mA, 29.3 V or less at 0 mA

• Temperature Drift: ±16 μA per 10 °C

• Redundancy Support: Yes, dual-redundant capable

• Mounting: Rack-mounted with K4A00 terminal block

• External Connection: KS Cable Interface Adapter (ATK4A-00)

• Weight: 0.3 kg

• Operating Temperature: -20 °C to +70 °C

• Humidity Range: 5% to 95% RH, non-condensing

• Maximum Current Consumption: 360 mA (5 V DC), 450 mA (24 V DC)