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SKU:AI820
ABB AI820 High Precision Analog Module 14-Bit Resolution
Manufacturer: ABB
Product No.: AI820
Product Type: Analog Input Module
Product Origin: SE
Payment:T/T, Western Union
Weight: 250g
Shipping port: Xiamen
Warranty: 12 months
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Tavsif
ABB AI820 Analog Input Module (3BSE008544R1)
High-precision 4-channel differential input module for S800 systems, supporting bipolar voltage and current signals. Features 14-bit resolution with sign for accurate measurement of positive and negative values in industrial applications.
Core Features & Benefits
- Bipolar Differential Inputs: Supports -20...+20 mA, -10...+10 V ranges for bidirectional signal measurement
- High Resolution: 14-bit plus sign for precise analog-to-digital conversion
- Built-in Transmitter Supply: Distributes power to external 2-wire transmitters
- Robust Protection: Withstands 30V DC accidental connections with high-power current sense resistors
Technical Specifications
- Article Number: 3BSE008544R1 AI820
- Channels: 4 differential bipolar inputs
- Resolution: 14-bit plus sign
- Accuracy: Max. 0.1% error
- Input Impedance: 200 kΩ (voltage mode, common), 800 kΩ (voltage mode, normal)
- Power Consumption: 1.7W (80mA +5V, 70mA +24V external)
- Operating Temperature: 0 to +55°C (40°C for vertical mounting)
- Isolation: Group isolated from ground (50V RIV)
Compatible Hardware
Designed for use with MTU units: TU810, TU812, TU814, TU830, TU833
Typical Applications
- Bidirectional process measurement (flow, position)
- High-precision analog signal acquisition
- Differential signal measurement in noisy environments
- Industrial control systems requiring bipolar ranges
Frequently Asked Questions
What is the advantage of bipolar inputs?
Bipolar inputs can measure both positive and negative signals, essential for applications like motor position, bidirectional flow, or differential pressure measurements.
How does the transmitter supply work?
The module distributes external transmitter power to each channel, simplifying connection for 2-wire transmitters without additional wiring.
What protection is provided for accidental high voltage?
5W current sense resistors provide temporary protection against accidental 24V connections, safeguarding one channel at a time during wiring errors.
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