Yokogawa AAI143-S50/K4S00 Isolated Analog Input Module

Overview

The Yokogawa AAI143-S50/K4S00 is a 16-channel isolated analog input module. Engineers use it with CENTUM VP and CS 3000 distributed control systems. It supports 4–20 mA current signals and ensures high signal integrity. Each channel offers isolation from others and from the system, improving accuracy and reducing electrical noise.

Technical Specifications

• Model: AAI143-S50/K4S00

• Input Type: Analog current input (4–20 mA)

• Number of Channels: 16 (individually isolated)

• Input Resistance (Power ON): 270–350 Ω

• Input Resistance (Power OFF): ≥500 kΩ

• Allowable Input Current: Up to 24 mA

• Accuracy: ±16 µA

• Data Update Period: 10 ms

• Temperature Drift: ±16 µA per 10°C

• Transmitter Power Supply:

• 19.0 V or more at 20 mA

• 25.5 V or less at 0 mA

• Output current limit: 25 mA

• Transmitter Wiring: 2-wire or 4-wire (settable per channel)

• Withstand Voltage (Input–System): 1500 V AC for 1 minute

• Power Consumption:

• 5 V DC: Max 230 mA

• 24 V DC: Max 540 mA

• External Connections: KS cable interface adapter and pressure clamp terminal block

• Mounting Method: DIN rail or panel mount

• Weight: 0.3 kg

• Operating Temperature Range: –20°C to +70°C

• HART Communication: Not supported