Overview
The Yokogawa AAI143-S00 is a 16-channel isolated analog input module designed for distributed control systems. It supports both 2-wire and 4-wire transmitters and provides high accuracy, stable signal conversion, and electrical isolation to ensure reliable process measurement.
General Information
Part Number: AAI143-S00
Manufacturer: Yokogawa
Brand / Country of Origin: Yokogawa / Japan
Series: AAI (Analog Input) Series
Type: Analog Input Module
Mounting: Rack-mounted within Yokogawa DCS or FCS system
Technology: 16 isolated analog input channels, 4–20 mA signal, redundancy support
Power Specifications
Supply Voltage: +5 V DC and +24 V DC (from backplane)
Power Consumption: Approx. 230 mA at 5 V, 540 mA at 24 V
Transmitter Power: 19.0 V to 25.5 V (depending on load current)
Protection: 1500 V AC isolation between input and system (1 minute)
Communication & Interface
Input Signal: 4–20 mA
Input Resistance: 270 Ω at 20 mA, 350 Ω at 4 mA (Power ON)
Allowable Input Current: Up to 24 mA
Accuracy: ±16 µA
Data Update Period: 10 ms
Configuration: Selectable 2-wire or 4-wire transmitter per channel
Function: Converts analog current signals to digital data for system control
Environmental
Operating Temperature: 0 °C to +60 °C
Humidity: Up to 95% RH, non-condensing
Protection Rating: IP20 (for cabinet installation)
Temperature Drift: ±16 µA per 10 °C change
Dimensions & Weight
Dimensions (L × W × H): 107.5 × 32.8 × 130 mm
Weight: 0.3 kg
