Product Overview
The ABB AI820 (3BSE008544R1) is a high-precision analog input module belonging to ABB’s S800 I/O system, a cornerstone of the System 800xA and AC 800M control platforms. The ABB AI820 (3BSE008544R1) is engineered to acquire and condition analog signals from field transmitters and sensors, converting them into digital data for the controller. This module provides four differential bipolar input channels, each configurable for either current or voltage signals, offering exceptional flexibility in process control applications.
Designed for demanding industrial environments, the ABB AI820 (3BSE008544R1) features a 14-bit resolution plus sign, ensuring accurate measurement of critical process variables such as pressure, temperature, flow, and level. The module’s input circuitry includes a robust 250Ω current detection resistor rated at approximately 5 watts, providing protection against accidental connection to 24 V supplies. All four channels are isolated from the ModuleBus as a group, and the module supports HART communication, enabling seamless integration with smart field instruments.
The ABB AI820 (3BSE008544R1) is part of the extensive S800 I/O portfolio, which is known for its modularity and ease of integration with ABB’s control systems. With its compact dimensions and DIN-rail mounting capability, the ABB AI820 (3BSE008544R1) facilitates efficient cabinet space utilization while delivering reliable analog signal acquisition for continuous process monitoring and control applications.
Technical Specifications
| Parameter Name | Parameter Value |
|---|---|
| Product Model | 3BSE008544R1 |
| Type Designation | AI820 |
| Manufacturer | ABB |
| Product Type | Analog Input Module |
| Number of Channels | 4 differential bipolar inputs |
| Input Signal Types | -20 to +20 mA, 0 to 20 mA, -10 to +10 V, 0 to 10 V, 2 to 10 V, -5 to +5 V, 0 to 5 V, 1 to 5 V DC |
| Resolution | 14 bits + sign |
| Channel Isolation | Group isolation from ModuleBus |
| Input Protection | 250Ω current resistor rated approx. 5 W, protects to 30 V DC |
| HART Communication | Supported |
| Power Supply | From ModuleBus (24 V) |
| Dimensions (W × H × D) | 45 mm × 119 mm × 102 mm (1.77″ × 4.7″ × 4.01″) |
| Weight | 0.2 kg (0.44 lbs.) |
| Mounting | S800 I/O rack, DIN rail compatible |
Main Features and Advantages
High-Precision Signal Acquisition: The ABB AI820 (3BSE008544R1) delivers accurate analog measurement with its 14-bit plus sign resolution and differential bipolar input architecture. This enables reliable data acquisition for critical control loops where measurement precision directly affects process quality and efficiency.
Flexible Input Configuration: Each of the four channels on the ABB AI820 (3BSE008544R1) can be individually configured for either voltage or current input, accommodating a wide range of field transmitter signal standards without external signal conditioning. This flexibility simplifies system design and reduces hardware inventory requirements.
Robust Input Protection: The ABB AI820 (3BSE008544R1) incorporates a 250Ω current detection resistor rated at approximately 5 watts, providing temporary protection for one channel at a time against accidental connection to 24 V supplies. The input can withstand unexpected maximum normal mode voltages up to 30 V DC, enhancing field reliability.
Transmitter Power Distribution: The ABB AI820 (3BSE008544R1) allocates external transmitter power to each channel through an extended Module Termination Unit (MTU), enabling simple connection of 2-wire transmitters without additional power distribution hardware. This integrated capability streamlines field wiring and reduces installation complexity.
HART Communication Support: The input channels of the ABB AI820 (3BSE008544R1) accept HART communication, allowing simultaneous digital communication with smart transmitters alongside analog signal acquisition. This supports advanced diagnostics and configuration capabilities for modern field instruments.
