B&R X20AT2402 B&R X20 Temperature Measurement Module

Product Overview

The X20AT2402 (X20AT2402) is a specialized temperature measurement module within the B&R X20 system, engineered for high-precision thermocouple data acquisition. This unit provides two dedicated inputs for thermocouple sensors, making it an essential component for thermal process control in sectors such as plastic injection molding, furnace management, and precision manufacturing. By utilizing 16-bit digital converter resolution, the X20AT2402 ensures highly granular signal processing, which is critical for maintaining strict thermal tolerances and reducing operational downtime in automated control loops.

Technical Configuration

The module is designed for seamless integration into the X20 decentralized I/O architecture. It supports a wide range of thermocouple types compliant with the EN 60584 standard, allowing for flexibility in sensor selection depending on the process temperature requirements.

Communication and status monitoring are streamlined through integrated status indicators, providing real-time feedback on I/O function per channel, overall operating state, and module health. With a B&R ID code of 0x1BA8, the module is automatically recognized by the B&R Automation Studio software, simplifying configuration and commissioning processes. The high-resolution 16-bit A/D conversion minimizes signal noise, providing a stable digital output for the master controller even in electrically noisy industrial environments.

Technical Specifications

FAQs

What thermocouple types are compatible with the X20AT2402?

The module is designed to support common thermocouple types as defined by the EN 60584 standard. Please refer to the specific software configuration settings in Automation Studio to select the appropriate sensor type for your application.

How does the 16-bit resolution affect measurement accuracy?

The 16-bit digital conversion provides a very high level of granularity, allowing the module to detect minute temperature changes that would be lost with lower-resolution hardware, ensuring better regulation of heating elements.

Can this module be used in a hazardous environment?

The module is built for standard industrial control cabinets. If your application involves hazardous zones, ensure it is installed within an appropriate explosion-proof or NEMA-rated enclosure.

How do I troubleshoot if a channel shows an error?

Use the integrated status LEDs to isolate the channel. Verify the integrity of the thermocouple wiring and ensure the sensor is not open-circuited. Check the software diagnostics in the B&R controller for specific fault codes associated with ID 0x1BA8.

Installation and Wiring Guidelines

• Thermocouple Polarity: Ensure that the positive and negative leads of the thermocouple are connected exactly according to the terminal diagram. Reversing polarity will result in erroneous readings, often showing a decrease in temperature when the actual temperature is increasing.
• Cold Junction Compensation: The X20AT2402 manages cold junction compensation internally. Avoid installing the module near extreme heat sources or direct cooling airflow, as significant temperature gradients across the module terminals can influence the compensation accuracy.
• Signal Integrity: Given the low millivolt output of thermocouples, ensure that signal wires are routed separately from high-voltage power lines and motor drive cables to prevent electromagnetic interference (EMI). Use twisted-pair, shielded thermocouple extension wire wherever possible.