Yokogawa AAI143-S50 Module | Isolated Analog Input

Yokogawa AAI143-S50 Analog Input Module

The Yokogawa AAI143-S50 accepts sixteen isolated 4-20mA signals with 10-millisecond update speed for real-time process monitoring.

Signal Processing Core

• Input Channels: 16 fully isolated channels prevent signal interference
• Signal Range: Standard industrial 4 to 20 mA current loop input
• Update Speed: Fast 10 ms data refresh for responsive control
• Overload Tolerance: Permits input currents up to 24 mA without damage
• Measurement Accuracy: High precision within ±16 µA across the operating range

Electrical & Safety Specifications

• Isolation Voltage: Withstands 1500 V AC between input and system for 1 minute
• Input Resistance: 270-350 Ω (ON) / 500 kΩ min (OFF)
• Transmitter Power: Supplies 19.0-25.5 V DC with a 25 mA current limit
• System Power: Consumes 230 mA @ 5V DC and 540 mA @ 24V DC
• Temperature Stability: Low drift of ±16 µA per 10°C change

Product Model & Configuration

• Full Model: Yokogawa AAI143-S50 Analog Input Module
• Module Family: Part of the AAI143 series for 4-20mA analog input
• Type Codes: S (Standard), 5 (No explosion protection), 0 (Basic type)
• Wiring Flexibility: Configure each channel for 2-wire or 4-wire transmitters via setting pins

Installation & Connectivity

• Mount the module securely in your system's designated slot or rack
• Select transmitter wiring (2-wire/4-wire) per channel using the setting pins
• Utilize pressure clamp terminals, MIL connector cables, or dedicated KS1 cables
• Ensure ambient temperature changes are within the specified drift parameters
• This is a standard type module not rated for hazardous locations

Frequently Asked Questions

• How fast does it read signals? The AAI143-S50 updates all 16 channels every 10 milliseconds.
• What power does it give to transmitters? It supplies 19.0-25.5V DC, limited to 25 mA per channel.
• Is there electrical isolation? Yes, it provides 1500V AC isolation between field inputs and the system.