ABB AI895 3BSC690089R1｜Analog Input Module｜

ABB AI895 3BSC690089R1 Analog Input Module

Product Overview

The ABB AI895 is a high-performance 8-channel analog input module in the ABB S800 I/O series, designed for reliable current signal acquisition in industrial automation systems. It supports intrinsic safety and HART communication, making it ideal for hazardous areas and applications requiring precise process measurement.

Product Information

• Manufacturer: ABB

• Model: AI895 3BSC690089R1

• Number of channels: 8

• Signal type: 4–20 mA, single-ended non-polar input

• Intrinsic safety: Yes

  • ATEX/IECEx Zone 2 → Zone 0

  • CFMus C1, Div 2/Zone 2 → C1, C2, C3 Div 1/Zone 0

• HART communication: Supported

Technical Specifications

• Resolution: 12 bits

• Input voltage drop: Typical 3 V (including PTC)

• Isolation: Group isolation to ground (1 group with 8 channels)

• Transmitter power supply: ≥15 V, 20 mA per channel for 2-wire intrinsically safe transmitters

• Overload limit: 23 mA

• Accuracy: Typical 0.05%, maximum 0.1%

• Temperature drift: Typical 100 ppm/°C

• Input filtering (0–90% rise time): 20 ms

• Power consumption: 4.75 W

• Current consumption:

  • +5V module bus: Typical 130 mA

  • +24V external: Typical 270 mA, maximum <370 mA

Features

• Intrinsic safety protection: Directly connects to intrinsically safe field instruments without external barriers, simplifying system design and maintenance.

• HART communication: Allows digital data transfer over analog 4–20 mA signals for remote diagnostics, configuration, and calibration.

• High precision acquisition: 12-bit resolution ensures accurate measurement of process variables; channel-to-ground isolation improves signal integrity.

• Flexible power supply: Provides power for two-wire intrinsically safe transmitters with built-in current limiting.

Working Conditions

• Operating temperature: 0 °C to +55 °C (up to 40 °C for vertical installation in Compact MTU)

• Storage temperature: –40 °C to +70 °C

• Relative humidity: 5–95%, non-condensing

• Protection level: IP20 (IEC 60529)

Application Fields

• Power generation

• Oil and gas

• Chemical industry

• Pharmaceutical industry

• Any application requiring intrinsic safety and high-precision analog signal acquisition