Description
Overview of ABB AI820 Analog Input Module (3BSE008544R1)
The ABB AI820 is a high-performance differential analog input module designed for precision measurement applications. This module is suitable for use in automation systems and offers a wide range of input options, including current and voltage inputs with exceptional accuracy and high resolution. With 4 isolated channels and a 14-bit resolution, the AI820 ensures reliable data acquisition from sensors or other field devices.
Technical Specifications
- Brand: ABB
- Model: AI820
- Number of Channels: 4 isolated channels
- Type of Input: Bipolar differential input
- Measurement Ranges:
- Current: -20…+20 mA, 0…20 mA, 4…20 mA, 0…20 mA
- Voltage: -10…+10 V, 0…10 V, 2…10 V, -5…+5 V, 0…5 V, 1…5 V (DC)
- Input Impedance (Voltage):
- Common mode: 800 kΩ ± 25%
- Normal mode: 200 kΩ ± 25%
- Input Impedance (Current): 250 Ω
- Maximum Field Cable Length: 600 meters (656 yd.)
- Maximum Differential DC Input (Fault): 30 V
- Common Mode Voltage: 50 V DC
- Common-Mode Rejection Ratio (CMRR): 80 dB at 50 Hz, 60 Hz (>60 dB DC)
- Noise Mode Rejection Ratio (NMRR): 33 dB
- Maximum Error: ± 0.1%
- Resolution: 14-bit plus sign
- Temperature Drift:
- Current: Max. 50 ppm/°C
- Voltage: Max. 70 ppm/°C
- Update Cycle Time: < 26 ms for all four channels
- Current Consumption:
- 24 V (Modulebus): 70 mA
- 5 V (Modulebus): 80 mA
- Power Dissipation: 1.7 W
- Voltage Supervision: Internal process supply
- Input Filter Rise Time: 40 ms
- Isolation: Groupwise isolated from ground
- Rated Insulation Voltage: 50 V
- Dielectric Test Voltage: 500 V AC
- Module Termination Units (MTUs): TU810, TU812, TU814, TU830
- MTU Keying Code: BB
