ABB 3BSE051306R1 AI835A S800 I/O 8-Channel Analog Input Module

Description

The ABB AI835A (3BSE051306R1) is a high-performance analog input module belonging to the S800 I/O family, designed for integration with the ABB Ability System 800xA. This module features 8 differential input channels specifically engineered for millivolt (mV) and thermocouple (TC) signal acquisition. It provides high-precision measurement capabilities with a 15-bit resolution, making it suitable for demanding process control environments.

Features

• 8 differential input channels for versatile signal monitoring.
• Supports a wide range of thermocouple types including B, C, D, E, J, K, L, N, R, S, T, and U.
• Configurable linear input range from -30 mV to +75 mV.
• Channel 8 can be configured for Cold Junction (CJ) compensation using a 4-wire Pt100 RTD.
• Integrated wire-break and open-circuit monitoring for enhanced diagnostic reliability.
• 15-bit A/D conversion resolution for precise process data.

Applications

• Power Generation: Monitoring boiler, exhaust gas, and steam turbine temperatures.
• Chemical & Petrochemical: Tracking temperatures in reactors, distillation columns, and fluid processing lines.
• Oil & Gas: Reliable data acquisition for remote extraction sites and refinery operations.
• Manufacturing & Metallurgy: Precision control for industrial furnaces, casting, and thermal curing processes.
• Water & Wastewater: Climate and liquid temperature monitoring within treatment facilities.

Technical Specifications

Installation Guidelines

• Ensure the system power is completely disconnected before inserting or removing the module from the mounting base.
• The module is designed for mounting on an S800 I/O MTU (Module Termination Unit). Verify that the MTU is correctly seated on the DIN rail.
• For thermocouple applications, ensure consistent wiring practices to minimize thermal gradients at the terminal connections.
• Use shielded cabling for field signals to maintain signal integrity and adhere to the 600-meter maximum cable length limit.
• Maintain proper ventilation within the cabinet to stay within operating temperature limits.
• Handle with ESD-safe precautions to prevent damage to sensitive internal components.

FAQ

What is the primary function of the AI835A?

The AI835A is an analog input module used within the S800 I/O system to convert low-level signals from thermocouples or millivolt sensors into digital data for the control system.

How is Cold Junction compensation handled?

Channel 8 can be designated as a dedicated CJ-channel. You can connect a Pt100 RTD to the MTU terminals for local ambient temperature measurement, or define a fixed junction temperature value via software parameters.

Is this module HART compatible?

No, the AI835A does not support HART communication or Sequence of Events (SOE) time-tagging.