Product Specification – X20DI4371

1. General Information

• Manufacturer: B&R Industrial Automation (ABB Group)

• Part Number: X20DI4371

• Product Type: Digital Input Module

• Product Series: X20 System

• B&R ID-Code: 0x1B92

• Certifications: CE, UKCA, cULus, ATEX Zone 2 (II 3G Ex nA nC IIA T5 Gc), EAC, DNV GL, ABS, Lloyd's Register

• Product Status: Active (Mass Production)

• Protection Class: IP20

• Module Width: 12.5 mm

2. Product Overview

3. Technical Specifications

3.1 Input Interface

• Input Channels: 4 × digital inputs (sink-type / NPN)B& R Industrial Automation

• Connection Type: 3-wire connections (provides 24 VDC & GND for sensors)B& R Industrial Automation

• Nominal Voltage: 24 VDC (-15% / +20%)B& R Industrial Automation

• Input Current: Typ. 3.75 mA per channel @ 24 VDCB& R Industrial Automation

• Input Resistance: Typ. 6.4 kΩB& R Industrial Automation

• Switching Threshold:

  • Low: < 5 VDCB& R Industrial Automation

  • High: > 15 VDCB& R Industrial Automation

• Input Filter:

  • Hardware: ≤ 100 μsB& R Industrial Automation

  • Software: Default 1 ms, configurable 0...25 ms (0.2 ms steps)B& R Industrial Automation

• Isolation: 500 V eff (channels vs. system bus)

• Input Characteristics: Type 1 (per EN 61131-2)B& R Industrial Automation

3.2 Counter Functions

• Counter Channels: 4 (one per input)

• Counter Resolution: 16-bit

• Max. Input Frequency: 1 kHz (with input filter disabled)

• Counter Modes: Configurable edge detection, cyclic counting

3.3 Electrical Parameters

• Supply Voltage: 24 VDC via X20 system bus

• Power Consumption:

  • System Bus: 0.14 W

  • Internal I/O: 0.59 W

• Protection: Reverse polarity, overvoltage, EMC protection

3.4 Mechanical & Environmental

• Mounting: Standard 35 mm DIN rail / X20 backplane

• Connector: Requires X20TB12 (12-pin screw terminal block)

• Operating Temperature:

  • Horizontal: -25°C ~ +60°C

  • Vertical: -25°C ~ +50°C

• Storage Temperature: -40°C ~ +85°C

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

• Vibration Resistance: 4 g (IEC 60068-2-6)

• Weight: Approx. 100 g

3.5 Diagnostics & Status

• LED Indicators:

  • Module status (Green/Red: Run/Error)

  • 4 × channel status LEDs (Green)

• Diagnostics: Module status, input state, power monitoring

• Hot Swapping: Supported

4. Key Features

• 4-Channel Sink Inputs: For NPN sensors & 3-wire connectionsB& R Industrial Automation

• Sensor Power Supply: Integrated 24 VDC/GND for direct sensor connection

• Configurable Filtering: Hardware & software filters for noise immunityB& R Industrial Automation

• Built-in Counters: 4 × 16-bit counters for pulse/encoder applications

• Galvanic Isolation: 500 V for high noise immunity

• Compact Design: 12.5 mm width, space-saving installation

• Industrial Certifications: ATEX Zone 2, marine & global safety approvals

• Full Diagnostics: LED & software-based status monitoring

• Hot-Swappable: Easy maintenance without system shutdown

5. Typical Applications

• NPN proximity switch & sensor signal acquisition

• Pulse counting for encoders, flow meters, & counters

• Limit switch & push-button input monitoring

• Industrial automation & machinery control

• Conveyor & material handling systems

• Hazardous area (Zone 2) signal monitoring

• Marine/offshore equipment I/O

6. Compatibility

• Base Modules: X20BM11, X20BM15, X20BB80

• Terminals: X20TB12 (12-pin screw terminal)

• System: Fully compatible with all X20 CPUs (X20CPxxx)

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