IMASI23

Overview

• Model Number: IMASI23
• Application: Analog Input Module for ABB Symphony

Power & Connectivity

• Operating Voltage: 5 VDC at 500 mA (typical), maximum 750 mA
• Overvoltage Category:
  • I for circuits above 150V
  • II for circuits below 150V

Input Channels

• Total Channels: 16 independently configured channels
• Types Supported: Thermocouples, 3-wire RTD, Millivolt, High level, and Current
• Input Ranges:
  • Thermocouples: Type B, E, J, K, L, N (14 AWG), N (28 AWG), R, S, T, U
  • RTD: 100 Ω platinum (US Lab Standard, US Industry Standard, European Standard)
  • Millivolt: -100 mV to +100 mV
  • Voltage: 1 to 5 VDC, 0 to 5 VDC, 0 to 10 VDC, -10 VDC to +10 VDC
  • Current: 4 to 20 mA

Performance

• Input Impedance:
  • Current: 10 MΩ minimum
  • Voltage: 100 kΩ minimum
• Resolution: 24 bits
• Conversion Speed: 180 msec for all 16 channels, each channel has a dedicated A/D converter

Accuracy & Calibration

• Accuracy (% of Full Scale Range):
  • Current: 0.02%
  • High-level Voltage: 0.04%
  • Low-level Voltage: 0.03%
  • Resistance: 0.05%
  • Temperature Effect: ± 0.003% of full scale range per degree C
• Lead Wire Resistance Effect:
  • Voltage (Uncompensated): 1 µV of error per Ω
  • Voltage (Compensated): 0.1 µV of error per Ω
  • Resistance (Uncompensated): 0.020 Ω of error per Ω
  • Resistance (Compensated): 0.008 Ω of error per Ω
• Input Setting Time: 1.5 seconds to within 1% after full-scale step change

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