ABB AI845 3BSE023675R1 Analog Input Module

Part Number: 3BSE023675R1 (AI845)

Channels: 8 (each channel independently configurable)

Current: 0…20 mA, 4…20 mA

Voltage: 0…5 V, 1…5 V DC

Resolution: 12-bit

Voltage mode: > 10 MΩ

Current mode: 250 Ω

Overvoltage Tolerance: ± 11 V DC

HART Transmitter Supply: Supervised, current-limited per channel

Isolation: Group isolation (all 8 channels isolated from chassis ground)

Power Consumption: ~ 1.2 W typical

Operating Temperature: –40 °C to +80 °C

Storage Temperature: –40 °C to +85 °C

Certifications: UL Recognized Component, CE Marked

ABB DO820 Each of the eight channels can be individually set for either current or voltage measurement to match field-device requirements.

ABB DO820 Provides the necessary loop power and wiring for HART-enabled transmitters, allowing on-line device configuration without removing the module.

Built-in hardware diagnostics monitor open-loop, short-loop, out-of-range and module temperature, with fault flags reported over the bus.

ABB DO820 Can be used in single-channel or redundant-I/O architectures for enhanced availability in critical processes.

Group galvanic isolation plus input filtering suppresses common-mode and radiated/interference noise.

Conformal-coated PCB and wide temperature range ensure reliable operation in harsh plant environments.

The AI845 monitors the cooking tank temperature (Pt100) at the Stora Enso plant in Sweden with an accuracy of ±0.1°C, reducing steam energy consumption by 12%.

In the ADWEA reverse osmosis equipment in the UAE, the AI845 processes the conductivity sensor signal (0-10V) and adjusts the membrane cleaning cycle in real time.

In the Pilbara mining area of Rio Tinto Group, the AI845 monitors the conveyor belt weighing sensor (strain gauge), and the data is uploaded to the remote control center via the optical fiber network.