ABB|AI895 3BSC6900B6R1|Analog Input Module

ABB AI895 Analog Input Module

The ABB AI895 (3BSC690086R1) is an 8-channel analog input module designed for intrinsically safe 4–20 mA current loop applications with integrated HART communication.

Description
This module provides intrinsic safety protection for hazardous areas, supports HART protocol, and powers Ex-certified two-wire transmitters directly without additional external components.

Features

• 8 channels for 4–20 mA unipolar inputs
• Built-in intrinsic safety protection
• HART communication capability
• Direct connection to Ex-certified transmitters
• Supports TU890 (Ex) and TU891 (non-Ex) MTUs

Technical Specifications

• Channels: 8 single-ended inputs
• Signal type: 4–20 mA current loop
• Resolution: 12 bits
• Input range: 1.5 to 22 mA
• Accuracy: Typ. 0.05%, max 0.1%
• Temperature drift: Typ. 100 ppm/°C
• Isolation: Groupwise isolated from ground
• CMRR: >80 dB at 50/60 Hz
• NMRR: >10 dB
• Input filter rise time: 20 ms
• Voltage drop: Typically 3 V per channel
• Transmitter supply: Min 15 V at 20 mA loop current
• Current limiting: Max 23 mA per channel
• Power dissipation: 4.75 W
• Current consumption:
  • +5 V Modulebus: Typ. 130 mA
  • +24 V external: Typ. 270 mA, max <370 mA
• Operating temperature: 0 to +55 °C
• Storage temperature: -40 to +70 °C
• Humidity: 5–95%, non-condensing
• Dimensions:
  • Width: 45 mm
  • Depth: 102 mm / 111 mm with connector
  • Height: 119 mm
• Weight: 0.2 kg