Overview
The Yokogawa AAI143-S50 is a 16-channel analog input module designed for use in industrial automation systems. It receives 4–20 mA or 1–5 V signals from field transmitters, offering high accuracy and stability for process control.
General Information
Part Number: AAI143-S50
Manufacturer: Yokogawa
Brand / Country of Origin: Yokogawa / Japan
Series: AAI143
Type: Analog Input Module
Mounting: Rack-mounted within Yokogawa DCS systems
Channels: 16 isolated analog inputs
Power Specifications
Supply Voltage: +5 V DC and +24 V DC from the backplane
Power Consumption: Approx. 230 mA at +5 V DC, 540 mA at +24 V DC
Transmitter Supply: 19.0 V min at 20 mA; 25.5 V max at 0 mA
Isolation: 1500 V AC between input and system (1 minute)
Communication & Interface
Input Signal: 4–20 mA DC or 1–5 V DC
Input Resistance: 270 Ω at 20 mA to 350 Ω at 4 mA
Accuracy: ±16 µA typical
Update Period: 10 ms
Channel Configuration: Supports both 2-wire and 4-wire transmitters
Environmental
Operating Temperature: –20 °C to +60 °C
Storage Temperature: –40 °C to +85 °C
Humidity: Up to 95% RH, non-condensing
Protection Rating: IP20 (for control cabinet installation)
Dimensions & Weight
Dimensions (L × W × H): 107.5 × 32.8 × 130 mm
Weight: 0.3 kg
