Technical Specifications
| Parameter Name | Parameter Value |
|---|---|
| Product Model | 3BSE008544R1 (AI820) |
| Manufacturer | ABB |
| Product Type | Analog Input Module |
| Series | S800 I/O System / AC 800M |
| Number of Channels | 4 (individually isolated) |
| Current Input Signals | ±20mA, 0(4)…20mA |
| Voltage Input Signals | ±10V, ±5V, 0(1)…5V |
| Resolution | 14-bit + sign (high precision) |
| Input Impedance (Current) | 250 Ω |
| Common Mode Voltage (CMV) | 50V (max) |
| Power Supply | 24V DC (from S800 bus) |
| Power Consumption | Approx. 2W |
| Operating Temperature | -20°C to +60°C |
| Dimensions (HxWxD) | 119mm x 45mm x 102mm |
| Weight | 0.2 – 0.3 kg |
Main Features and Advantages
Superior signal fidelity and flexibility: The ABB 3BSE008544R1 offers remarkable versatility in signal handling. Through software configuration in the AC 800M controller, each of its four channels can be independently set for current or voltage inputs, eliminating the need for hardware jumpers or configuration switches. The 14-bit plus sign resolution ensures high measurement accuracy, critical for applications where precise sensor data drives control decisions.
Individual galvanic channel isolation: A standout feature of the ABB AI820 is the individual galvanic isolation provided for each input channel. This design offers up to 50V of common-mode voltage capability, protecting the control system from ground potential differences and electrical interference commonly found in industrial environments. This isolation also prevents a single faulty sensor from affecting adjacent channels or the entire module, maintaining system integrity and simplifying troubleshooting.
Seamless S800 system integration: The 3BSE008544R1 is designed for plug-and-play integration with the S800 I/O system. It connects to the system via standard Module Termination Units (MTUs) like the TU810, TU812, TU814, and TU830, which provide the physical connection points for field wiring. The module’s support for hot-swapping enables replacement without system downtime, a critical advantage for continuous processes where maintenance windows are limited.
Robust industrial-grade construction: Built for reliability, the ABB 3BSE008544R1 operates across a wide temperature range (-20°C to +60°C) and is designed to withstand vibration and shock commonly encountered in heavy industry. Its high accuracy, with low temperature drift, ensures consistent performance over extended periods, making it a dependable workhorse in critical control loops.
Application Field
The ABB 3BSE008544R1 is deployed across a broad spectrum of industries where precise process measurement is fundamental to control. In the oil and gas and petrochemical sectors, the AI820 is routinely used to acquire signals from pressure transmitters on pipelines, temperature sensors on reactors, and flow meters in custody transfer applications, feeding critical data to the AC 800M controller for safety and production optimization.
In power generation, the ABB 3BSE008544R1 monitors boiler drum levels, steam pressures, and feedwater temperatures, contributing to safe and efficient plant operation. The module’s ability to reject electrical noise makes it particularly suited for the high-EMI environment of power plants. Similarly, in the metals and mining industry, the 3BSE008544R1 is used to monitor crusher loads, conveyor belt speeds, and slurry densities in processing plants.
Other key application areas include the pulp and paper industry, where the module acquires signals from consistency and temperature sensors, and water and wastewater treatment facilities, where it monitors pH, flow, and turbidity. For system integrators and end-users, the ABB 3BSE008544R1 is a common and trusted component for both new S800 installations and system expansions or upgrades in legacy ABB DCS environments.
