Product Specification – X20AT4222

1. General Information

• Manufacturer: B&R Industrial Automation

• Part Number: X20AT4222

• Product Type: 4-Channel RTD Temperature Input Module

• Product Series: X20 Distributed I/O System

• B&R ID Code: 0x1BA7

• Certifications: CE, UKCA, cULus, EAC, KC, ATEX (Zone 2, II 3G Ex nA nC IIA T5 Gc), cCSAus

• Product Status: Active (In Production)

• Protection Rating: IP20

• Application: High-precision temperature measurement using Pt100/Pt1000 RTD sensors in industrial automation

2. Product Overview

3. Technical Specifications

3.1 Input & Measurement

• Number of Inputs: 4 independent RTD channels

• Sensor Types: Pt100 / Pt1000 (configurable per channel)

• Wiring Mode: 2-wire or 3-wire (selectable per module)

• Measurement Method: Constant-current direct resistance measurementB& R Industrial Automation

• Resolution: 16-bit (Sigma-Delta ADC)B& R Industrial Automation

• Temperature Range: -200 °C to +850 °C (sensor-dependent)

• Basic Accuracy: ±0.1 °C (typical for Pt100 at 25 °C)

• Conversion Time:

  • 1 channel active: 20 ms (with 50 Hz filter)B& R Industrial Automation

  • 2–4 channels active: 40 ms/channel (with 50 Hz filter)

• Filter Time: Configurable 1 ms – 66.7 msB& R Industrial Automation

• Input Protection: Overvoltage, reverse polarity, short-circuit resistant

3.2 Electrical Characteristics

• System Interface: X20 backplane busB& R Industrial Automation

• Power Consumption:

  • Bus: 0.01 WB& R Industrial Automation

  • Internal I/O: 1.1 WB& R Industrial Automation

• Isolation: Galvanic isolation (field-side / logic / bus)

• Isolation Voltage: 500 Veff

• Measuring Current: 250 µA ±1.25%

3.3 Environmental Specifications

• Operating Temperature:

  • Horizontal: -25 °C to +60 °CB& R Industrial Automation

  • Vertical: -25 °C to +50 °CB& R Industrial Automation

• Storage Temperature: -40 °C to +85 °CB& R Industrial Automation

• Humidity: 5–95% RH (non-condensing)B& R Industrial Automation

• Vibration/Shock: Compliant with IEC 60068

3.4 Mechanical

• Dimensions: 12.5 mm (W) × 102 mm (H) × 70 mm (D)B& R Industrial Automation

• Weight: ~0.07 kg

• Mounting: DIN rail / X20 bus baseB& R Industrial Automation

• Terminal Block: X20TB12 (12-pin)

• Bus Base Module: X20BM11

• Indicators: Channel LEDs, module status (run/error)B& R Industrial Automation

3.5 Diagnostics

• Channel status monitoringB& R Industrial Automation

• Sensor break / short detection

• Over/underrange alarmsB& R Industrial Automation

• Module self-diagnosticsB& R Industrial Automation

• Software-based status readoutB& R Industrial Automation

4. Key Features

• 4-channel high-precision RTD input

• Per-channel Pt100 / Pt1000 sensor selection

• 2/3-wire configurable wiring

• 16-bit resolution with high accuracyB& R Industrial Automation

• Fast conversion and wide filtering optionsB& R Industrial Automation

• Full galvanic isolation

• Advanced sensor diagnostics

• Compact 12.5 mm widthB& R Industrial Automation

• ATEX / hazardous area certifications

• Hot-swappable design

• Full Automation Studio support

5. Typical Applications

• Industrial process temperature control

• HVAC and environmental monitoring

• Food & beverage processing

• Pharmaceutical manufacturing

• Plastics and packaging machinery

• Energy and power generation

• Marine and offshore systems

• Hazardous area (Zone 2) temperature sensing

6. Compatibility

• Bus Base Modules: X20BM11

• Terminal Blocks: X20TB12

• Software: B&R Automation Studio (full configuration & diagnostics)

7. Reliability & Support

• Industrial-grade design for 24/7 continuous operation

• Maintenance-free solid-state design

• Standard manufacturer warranty

• Long-term production and supply commitment

• Global certifications for worldwide deployment