ABB AI835 3BSE051306R1 S800 I/O Isolated Thermocouple Input Module

Description

The AI835 is a high-precision temperature input module that supports multiple thermocouple types and low-voltage millivolt signals. It features built-in cold-junction compensation and digital filtering to ensure accuracy and stability under varying ambient conditions. By converting sensor signals into reliable digital data, the AI835 enables precise temperature control in power, chemical, and manufacturing applications.

Specifications

• Manufacturer: ABB

• Country of Origin: Sweden

• Model Number: AI835 (3BSE051306R1)

• Input Channels: 8 differential channels

• Supported Sensors: Thermocouples (Types B, C, E, J, K, N, R, S, T) and mV inputs

• A/D Resolution: 15 bits plus sign

• Isolation: Galvanic isolation between channels and system logic

• Update Cycle: 320 ms (for all 8 channels)

• Power Supply: 24 VDC nominal

• Physical Weight: 0.24 kg (0.53 lbs)

Features

• Universal Sensor Compatibility: Supports nearly all standard industrial thermocouple types, reducing the need for multiple module variants.

• Integrated Cold Junction Compensation: Automatically adjusts for temperature variations at the terminal connection to ensure absolute measurement accuracy.

• Superior Noise Suppression: Employs advanced 50/60 Hz digital filtering to eliminate electromagnetic interference from high-voltage machinery.

• Channel-Specific Diagnostics: Continuously monitors for sensor burnout and open-circuit conditions, providing immediate feedback via LED indicators.

• Live Module Replacement: Supports hot-swap functionality, allowing for maintenance and hardware exchange without interrupting system-wide operations.

• Redundant Configuration Support: Fully compatible with redundant Module Termination Units (MTUs) for high-availability safety applications.