General Information
Manufacturer: B&R Industrial Automation

Model Number: X20S04110

Module Type: Safety I/O Module

Series: X20 System

Width: 45mm (triple-width X20 module)

Safety Rating: SIL 3 (IEC 61508), PL e (ISO 13849-1)

Electrical Parameters
Input Specifications
Parameter Specification
Input Channels 4 safe digital inputs
Input Type 24V DC (PNOZ/OSSD compatible)
Input Voltage 15-30V DC
Input Current 6mA @ 24V DC
Response Time ≤10ms
Cross-Circuit Detection Yes
Output Specifications
Parameter Specification
Output Channels 2 safe semiconductor outputs
Output Type 24V DC (0.5A per channel)
Short-Circuit Protection Yes (auto-reset)
Switching Frequency 100Hz max
Power Supply
Parameter Specification
Supply Voltage 24V DC (via X20 bus)
Power Consumption 2.5W (typical)
Isolation 500V AC (safety circuits to logic)
Safety Performance
Safety Integrity Level: SIL 3 (IEC 61508)

Performance Level: PL e (ISO 13849-1)

PFHd Value: <1×10⁻⁹/h (Cat. 4)

Diagnostic Coverage (DC): >99%

Mechanical & Environmental Specs
Parameter Specification
Dimensions (W×H×D) 45 × 100 × 64 mm
Weight ~250g
Connection Removable screw terminals
Wire Size 0.14–2.5mm² (AWG 26–14)
Operating Temp. -25°C to +60°C
Protection Class IP20
Functional Features
✔ Dual-channel safety inputs (for E-STOP, light curtains)
✔ Safe semiconductor outputs (for contactor control)
✔ Integrated diagnostics (LED per channel + bus communication)
✔ Hot-swappable (in X20 system)
✔ TÜV-certified safety firmware

Certifications & Compliance
Functional Safety: IEC 61508, ISO 13849-1

EMC: EN 61000-6-2/-4

Standards: UL 61010-1, CE, RoHS

Ordering Information
Base Model: X20S04110

Accessories:

Terminal blocks (X20 TB*)

Safety relay expansion modules

Typical Applications
Machine E-STOP circuits

Safety door monitoring

Robotic cell safeguarding

Press brake safety systems

Note: For safety validation templates, refer to B&R Safety Manual (BRAS-UM-100). All safety circuits require validated design by qualified personnel.