Yokogawa AAI143-S53 Analog Input Module (Current Input)

The analog I/O modules (with HART communication function) communicate with field devices and store analog data and HART variables in the Input/Output image area in the communication module.

An FCS refers to and sets the Input/Output image by accessing the analog I/O modules (with HART communication function).

The FCS utilizes the field device data via I/O terminals of the function block in the same way as other analog/digital I/O signals.

Technical Specifications for Honeywell AAI143 Module:

• Model: AAI143
• Number of Input Channels: 16, isolated
• Input Signal: 4 to 20 mA
• Allowable Input Current: 24 mA
• Withstanding Voltage (Between Input and System): 1500 V AC, for 1 minute
• Input Resistance (Power ON):
  • At 20 mA: 270 Ω
  • At 4 mA: 350 Ω
• Input Resistance (Power OFF): 500 kΩ or larger
• Accuracy: ±16 µA
• Data Update Period: 10 ms
• Transmitter Power Supply:
  • Minimum: 19.0 V (at 20 mA)
  • Maximum: 25.5 V (at 0 mA, output current limit: 25 mA)
• Setting of 2-wire or 4-wire Transmitter: For each channel by setting pin
• Drift due to Ambient Temperature Change: ±16 µA/10˚C
• Maximum Current Consumption:
  • 230 mA (5 V DC)
  • 540 mA (24 V DC)
• Weight: 0.3 kg
• External Communication: Pressure clamp terminal, MIL connector cable, dedicated cable (KS1)
• HART Communication: Available