AI895 | 3BSC690086R1 | ABB AC 800M Analog Input Module

Product Description

High-Precision Analog Signal Acquisition

The AI895 (Part Number: 3BSC690086R1) is a high-density analog input module engineered for the ABB S800 I/O system. Operating within the System 800xA and AC 800M controller architecture, the AI895 (Model: AI895) provides eight independent channels for interfacing with standard 4-20 mA field transmitters. This module is essential for converting process variables—such as pressure, temperature, and flow—into high-resolution digital data. Its robust galvanic isolation and 12-bit resolution ensure that signal integrity is maintained even in environments with high electromagnetic interference, providing the deterministic data needed for closed-loop control strategies.

Detailed Technical Specifications

The AI895 (3BSC690086R1) is optimized for performance-critical measurement in industrial DCS clusters.

• Manufacturer: ABB

• Model Number: AI895

• Order Number: 3BSC690086R1

• System Compatibility: S800 I/O, AC 800M, System 800xA

• Number of Channels: 8 isolated channels

• Input Signal Range: 4–20 mA (Current Input)

• Resolution: 12 Bits

• Accuracy: ±0.1% of Full Scale (at 25°C)

• Input Impedance: Typically 250 ohms

• Isolation: Channel-to-channel and channel-to-system galvanic isolation

• HART Communication: Not supported on AI895 (standard analog only)

• Update Rate: Typical 10 ms cycle for all 8 channels

• Power Requirements: 24 V DC (Supplied via S800 station backplane)

• Operating Temperature: 0 °C to +55 °C (32 °F to 131 °F)

• Storage Temperature: -40 °C to +70 °C (-40 °F to 158 °F)

• Protection Rating: IP20

• Mounting Type: DIN rail via compatible Module Termination Unit (MTU)

• Dimensions: 127 mm x 102 mm x 35 mm

• Net Weight: 0.3 kg (0.66 lbs)