AI893 3BSC690141R1 Overview

The ABB Analog Input Module AI893 3BSC690141R1 is an 8-channel S800 analog input module with intrinsic safety certification for direct connection to RTD or thermocouple sensors in hazardous areas.

Features and benefits

Integrated Safety: 8 channels with built-in intrinsic safety (Ex) protection, eliminating need for external barriers.

Sensor Flexibility: Configurable for 2/3-wire RTD or thermocouple (TC) sensors.

High Resolution: Provides 15-bit plus sign measurement resolution for accuracy.

Cold Junction Compensation: Dedicated channel (Ch.8) for accurate TC measurements with a Pt100 sensor.

Simplified Wiring: Compatible with TU890/TU891 MTUs for direct 3-wire connections without extra terminals.

High Accuracy: Features low error and temperature drift for reliable data.

FAQ

Q1: What types of sensors is the AI893 module compatible with?

A1: It is configurable for both 2/3-wire RTD sensors and Thermocouple sensors.

Q2: How many input channels does the AI893 have, and what is their safety feature?

A2: It has 8 differential input channels, each featuring built-in Intrinsic Safety protection for hazardous areas.

Q3: What is the measurement resolution of this module?

A3: It provides a high-resolution 15-bit plus sign measurement.

Q4: How does the module handle cold junction compensation for thermocouples?

A4: Channel 8 can be configured as a dedicated CJ channel, measured by a 3-wire Pt100 sensor.

Q5: What is a key accessory that simplifies wiring with this module?

A5: The TU890 (Ex) or TU891 (non-Ex) Compact MTU enables direct 3-wire connections without extra terminals.