ABB AI835A 3BSE051306R1 S800 I/O Thermocouple Input Module

Description

The ABB AI835A is a high-performance analog input unit designed for precise temperature acquisition within the S800 I/O system. This module provides 8 independent channels specifically calibrated for thermocouple and low-voltage millivolt signals. As an updated hardware revision (A), it offers enhanced stability and signal processing for integration with the AC 800M controller. It is a vital component for industrial processes requiring high-accuracy thermal monitoring, such as furnace control, power generation, and chemical reactor management.

Specifications

• Manufacturer: ABB

• Country of Origin: Switzerland

• Model Number: AI835A

• Order Number: 3BSE051306R1

• Product Type: 8-Channel Thermocouple Input Unit

• Supported Sensors: Types B, C, E, J, K, N, R, S, T

• Voltage Input Range: -30 mV to +75 mV

• A/D Resolution: 15-bit plus sign

• Galvanic Isolation: 50V (Continuous)

• Power Dissipation: 1.5 W (Typical)

• Weight: 0.2 kg

Features

• Cold Junction Compensation: Supports multiple CJC methods, including internal sensing and external Pt100 sensors, to ensure data integrity across variable ambient temperatures.

• Versatile Signal Handling: Compatible with a wide array of standard thermocouple types and linear millivolt inputs for specialized sensing applications.

• Integrated Safety Diagnostics: Continuous monitoring of field wiring provides automatic detection of sensor breaks or open-circuit conditions.

• Robust Interference Rejection: Built-in digital filtering effectively suppresses 50/60 Hz industrial noise to maintain high measurement resolution.

• Hot-Swap Functionality: Allows for module replacement under system power, significantly reducing maintenance downtime in continuous process environments.

• Compact Modular Design: Interfaces seamlessly with S800 Module Termination Units (MTUs) for efficient DIN-rail mounting and space-saving cabinet layouts.