B&R X20AI4222 X20 Analog Input Module

Product Overview

The B&R X20AI4222 (X20 AI 4222) is a high-performance analog input module designed for the X20 system, providing 4 differential analog inputs for precise voltage signal acquisition. Engineered for demanding industrial control environments—including automation lines and machine monitoring—this module offers a voltage range of ±10 V and a 13-bit digital converter resolution (including sign). By integrating a configurable 3rd-order low-pass input filter with a 1 kHz cutoff frequency, the X20AI4222 effectively mitigates high-frequency interference, ensuring reliable data fidelity for complex closed-loop control tasks and reducing the risk of system downtime caused by signal noise.

Technical Configuration

The module architecture is optimized for seamless X20 system integration, requiring the X20TB12 terminal block and X20BM11 bus module for operation. The inputs utilize a Successive Approximation Register (SAR) conversion procedure to deliver high-speed data capture. Diagnostics are comprehensive, featuring dedicated status LEDs for channel-specific I/O functions and module-wide error states, which are also fully accessible via the host software. Electrical isolation is maintained between the I/O channels and the backplane bus, providing a robust barrier against electrical transients and ground loops in noise-sensitive applications.

Technical Specifications

FAQs

Is the X20AI4222 compatible with current (mA) signals?

No, the X20AI4222 is specifically designed for ±10 V voltage signals. If you require current measurement, consider modules such as the X20AI4322 or X20AI4622 which support current loop inputs.

What is the function of the configurable input filter?

The 3rd-order low-pass filter with a 1 kHz cutoff frequency is used to suppress high-frequency noise or signal spikes. This helps maintain stable analog readings in environments with electromagnetic interference, such as areas near large motors or frequency drives.

Are the terminal block and bus module included?

No, these are mandatory accessories. You must order 1x X20TB12 terminal block and 1x X20BM11 bus module separately to install the module in an X20 rack.

Installation and Operational Guidelines

• Shielding and Grounding: To achieve maximum signal accuracy, use shielded, twisted-pair cabling for all analog input lines. Ensure the shield is properly grounded at a single point, ideally at the cabinet entrance, to avoid ground loops that could interfere with the 13-bit conversion precision.
• Operating Conditions: The module supports both horizontal and vertical mounting. For horizontal mounting, the operational temperature range is -25 to 60 deg C. If installing the module at an altitude above 2000 m, ensure the maximum ambient temperature is derated by 0.5 deg C per 100 m to prevent thermal degradation of the internal components.
• Overload Protection: The module is protected against accidental connection to supply voltage. However, for maximum longevity, ensure that input signals do not exceed the permissible limit of ±30 V to avoid damaging the input stage.