Product Specification: B&R X20AI1744 Analog Input Module

1. General Information

• Manufacturer: B&R Industrial Automation

• Part Number: X20AI1744

• Alternative Designation: X20 AI1744

• Product Type: 1-Channel Full-Bridge Strain Gauge Analog Input Module

• Product Series: X20 System (Distributed Cabinet I/O)

• B&R ID Code: 0x1CDEB& R Industrial Automation

• Certifications: CE, UKCA, ATEX (Zone 2, II 3G Ex nA nC IIA T5 Gc), cULus (E115267), KCB& R Industrial Automation

• Product Status: Active (Current Production)

2. Core Description

3. Technical Specifications

3.1 Analog Input Interface

• Number of Inputs: 1 dedicated full-bridge strain gauge input

• Input Type: Differential input for Wheatstone full-bridge sensorsB& R Industrial Automation

• Connection: Supports 4-wire and 6-wire (sense leads) configurationsB& R Industrial Automation

• Strain Gauge Factor (Measuring Range): Software-configurable 2 to 256 mV/VB& R Industrial Automation

• Bridge Excitation Voltage: 5.5 VDC (max. 65 mA)

• Sensor Resistance Range: 85 Ω to 5000 Ω

• Common-Mode Voltage Range: 0 to 3 VDC

• Digital Converter Resolution: 24-bit sigma-delta ADCB& R Industrial Automation

• Data Output Rate: Software-configurable 0.1 Hz to 7.5 kHz (0.1 to 7500 samples/sec)B& R Industrial Automation

• Input Filter: 3rd-order, 60 dB/octave filter with configurable cutoff (default 5 kHz)B& R Industrial Automation

• Input Protection: RC surge protection

3.2 Performance Characteristics

• System Compensation: Automatic compensation for gain, offset, and bridge voltage drift

• Special Operating Modes:

  • Synchronous Mode: For synchronized sampling across multiple modules

  • Multiple Sampling: For enhanced noise reduction and stability

• Conversion Time: Dependent on the configured data output rateB& R Industrial Automation

3.3 Electrical & Power Characteristics

• Bus Interface: X20 System Backplane

• Power Consumption:

  • Bus Power: 0.01 WB& R Industrial Automation

  • Internal I/O Power: 0.5 WB& R Industrial Automation

  • Max. Additional Dissipation (Actuators): +0.36 WB& R Industrial Automation

• Isolation: Full galvanic isolation between bus, analog input, and bridge supply

3.4 Physical & Environmental Characteristics

• Form Factor: Slim, modular X20 slice I/O module

• Width: 12.5 mm (+0.2 mm)

• Weight: Approx. 0.035 kg (0.077 lbs)

• Mounting: Direct insertion into X20 bus base module (DIN-rail compatible)

• Connectors: Requires separate X20TB12 12-pin terminal block

• Bus Base Module: Requires separate X20BM11 or X20BM15 bus module

• Operating Temperature: -25°C to +60°C (horizontal mount)

• Storage Temperature: -40°C to +85°C

• Relative Humidity: 5 – 95% RH, non-condensing

• Vibration/Shock: Conforms to IEC 60068 standards

• Protection Rating: IP20 (front face)

• Material: Flame-retardant industrial plastic

3.5 Status Indicators & Diagnostics

• Channel LED: 1 LED for input statusB& R Industrial Automation

• Module Status LED: Indicates power, run, and error conditionsB& R Industrial Automation

• Diagnostic Features:

  • Comprehensive module run/error diagnosticsB& R Industrial Automation

  • Open circuit detection for sensor/connection failureB& R Industrial Automation

  • Real-time input signal status monitoringB& R Industrial Automation

  • Software-configurable alarm thresholds

4. Key Features & Benefits

• Ultra-High Resolution 24-bit ADC: Provides unparalleled precision for micro-strain and low-signal measurements.

• Full-Bridge Specialization: Optimized circuit design for direct connection to strain gauge load cells and force sensors.

• Flexible Wiring: 4/6-wire support eliminates long-cable resistance errors, ensuring measurement integrity.

• Wide Measuring Range: Software-configurable 2–256 mV/V span adapts to various sensor sensitivities.

• High-Speed Sampling: Up to 7.5 kHz rate for capturing dynamic force or weight changes.

• Advanced Signal Processing: Built-in compensation and filtering ensure stable, drift-free readings.

• Industrial Robustness: Galvanic isolation and surge protection safeguard against electrical noise and transients.

• Comprehensive Diagnostics: Open-circuit detection simplifies maintenance and reduces downtime.

• Seamless X20 Integration: Hot-swappable design for easy installation and expansion.

• Hazardous Location Rated: ATEX Zone 2 certification for use in potentially explosive atmospheres.

5. Typical Applications

• Precision Weighing Systems: Single/multi-point scales, hopper scales, belt scales, and checkweighers.

• Force & Torque Measurement: Material testing machines, press force monitoring, robotics, and assembly tools.

• Industrial Automation: Tension control in web handling (paper, film, wire), load monitoring on cranes and lifts.

• Test & Measurement: High-resolution data acquisition for structural and materials research.

• Process Control: Batching, dosing, and filling systems requiring exact weight measurement.

• Hazardous Areas: Weighing applications in chemical, pharmaceutical, and oil & gas facilities (ATEX Zone 2).

6. Compatibility

• System Compatibility: Fully compatible with all B&R X20 system controllers and CPUs.

• Bus Base: Requires X20BM11 (standard) or X20BM15 (with node switch) bus module.

• Terminal Block: Requires X20TB12 12-pin screw terminal block.

• Software: Fully configurable via B&R Automation Studio (measurement range, sampling rate, filters, alarms).

7. Reliability & Support

• Design Life: Engineered for continuous 24/7 operation in industrial environments.

• Warranty: Covered under B&R's standard manufacturer's warranty.

• Product Lifecycle: Active, current production with full technical support.

• Maintenance: Minimal maintenance; diagnostics enable quick fault identification and resolution.