Yokogawa AAI143-S50/A4S00 Isolated Analog Input Module

Overview

The Yokogawa AAI143-S50/A4S00 is a 16-channel isolated analog input module. It supports 4–20 mA and 1–5 V DC signals. The module features excellent noise immunity with channel-to-channel and system isolation. It supports HART communication for remote diagnostics and configuration. The device allows dual-redundant configurations, ensuring high system reliability. It fits into DIN rail or panel mounts for flexible installation.

Technical Specifications

• Model: AAI143-S50/A4S00

• Input Type: Analog (4–20 mA or 1–5 V DC)

• Number of Channels: 16, individually isolated

• Signal Isolation: Channel-to-channel and channel-to-system

• HART Support: Yes

• Redundancy: Supports dual-redundant configurations

• Accuracy: ±0.1% of full scale (±16 µA)

• Allowable Input Current: Up to 24 mA

• Withstanding Voltage: 1500 V AC for 1 minute between input and system

• Input Resistance:

• Power ON: 270 Ω (20 mA) to 350 Ω (4 mA)

• Power OFF: ≥ 500 kΩ

• Data Update Period: 10 ms

• Transmitter Power Supply:

• 19.0 V or higher at 20 mA

• 25.5 V or less at 0 mA, output current limit 25 mA

• Transmitter Setting: Configurable 2-wire or 4-wire per channel

• Drift with Ambient Temperature: ±16 µA/10 °C

• Power Consumption:

• 230 mA at 5 V DC

• 540 mA at 24 V DC

• Operating Temperature: –20°C to +60°C

• Dimensions: 50 mm × 25 mm × 120 mm

• Weight: 0.3 kg

• Mounting: DIN rail or panel mount