Product Overview

The B&R X20AI4622 (X20 AI 4622) is a high-performance analog input module designed for precision process monitoring within the B&R X20 automation system. Engineered for demanding industrial environments—including power generation plants, chemical processing facilities, and automated manufacturing lines—this module provides 4 differential inputs capable of handling both current and voltage signals. By delivering reliable, high-resolution signal acquisition, the X20AI4622 significantly reduces sensor-to-controller latency and mitigates the risk of unscheduled downtime caused by signal inaccuracies. Its compact design and modular architecture ensure seamless integration into existing control cabinets, providing the robust data fidelity required for complex closed-loop control applications.

Technical Configuration

The module features a high-precision 13-bit digital converter (including sign) based on the Successive Approximation Register (SAR) conversion procedure. It is built for versatility, allowing the user to switch between voltage (plus/minus 10 V) and current (0 to 20 mA or 4 to 20 mA) modes simply by selecting the appropriate terminal connection points. The module is engineered with a 3rd-order low-pass input filter with a cutoff frequency of 1 kHz to eliminate high-frequency noise from industrial machinery. Electrical isolation is provided between the I/O channels and the backplane bus, protecting the CPU and downstream processing components from potential transients. Status monitoring is comprehensive, with integrated LEDs for channel-specific I/O functions and module-wide error diagnostics accessible via software.

Technical Specifications

FAQs

Is the X20AI4622 compatible with all X20 series backplanes?

Yes, it is designed for the standard X20 system architecture, but you must order the X20BM11 bus module and X20TB12 terminal block separately as they are not included with the module.

How do I switch between voltage and current input modes?

The selection is hardware-dependent. You must wire the input signal to the specific terminal points designated for either voltage or current mode as outlined in the B&R user manual.

What is the recommended procedure if the module reports an overload?

The module is equipped with configurable diagnostics. When an overload is detected, the output of the digital value can be set via software configuration; check your software project settings to ensure the error-handling behavior matches your safety requirements.

Installation and Operational Guidelines

• Wiring and Shielding: To ensure maximum signal integrity, always use shielded twisted-pair cables for analog signals. Ground the cable shield at one point—preferably at the entry to the control cabinet—to prevent ground loops that could interfere with the 13-bit conversion precision.
• Thermal Management: When mounting the module in a cabinet, ensure a clearance of at least 12.5 mm to allow for proper airflow. If the installation altitude exceeds 2000 m above sea level, ensure the ambient temperature rating is derated by 0.5 deg C per 100 m to prevent thermal fatigue of the internal components.
• Terminal Safety: The X20AI4622 is rated for hazardous locations (Class I, Division 2). Before servicing, ensure the environment is free of flammable gas concentrations and verify that the module is powered down before removing it from the X20BM11 bus module to prevent arcing.