General Information
Manufacturer: B&R Industrial Automation (ABB Group)

Series: X20 System

Model: X20DI4371

Type: High-Density Digital Input

Channels: 32 (isolated in groups of 8)

Input Specifications
Input Voltage Range: 15-30V DC

Nominal Voltage: 24V DC

Logic Levels:

"1" Signal: ≥15V DC

"0" Signal: ≤5V DC

Input Current: 3mA @ 24V DC

Filter Time: 0.1/0.5/3/15ms (software selectable)

Isolation: 500V between groups (8 channels/group)

Electrical Characteristics
Power Consumption: 2.5W (typical)

Backplane Current: 100mA @ 5V DC

Surge Protection: 35V DC (transient)

Mechanical Specifications
Dimensions: 30 × 100 × 70mm (W×H×D)

Weight: 150g

Mounting: DIN Rail EN 60715

Connector: Removable terminal block

Protection Class: IP20

Performance Data
Update Time: 1ms (all channels)

Max. Switching Frequency: 1kHz

Diagnostics: Per-channel status detection

Environmental Ratings
Operating Temperature: 0°C to +60°C

Storage Temperature: -40°C to +85°C

Humidity: 5-95% non-condensing

Vibration: 5g (10-150Hz)

Shock: 15g (11ms)

Certifications
Safety: EN 61131-2

EMC: EN 61000-6-2/4

Industrial: CE, UL, RoHS

Typical Applications:

Machine status monitoring

Limit switch detection

Pushbutton interfaces

Safety door monitoring

Production counting systems