General Information:

Manufacturer: B&R Industrial Automation

Module Type: Safety I/O Module

Series: X20 System

Order No.: X20DS438A

Safety Rating: SIL3/PLe/Cat.4 (EN 61508, EN ISO 13849-1)

Protection Class: IP20 (cabinet installation)

Safety Specifications:

Safety Standard Compliance:

EN 61508 (SIL3)

EN ISO 13849-1 (PLe, Cat.4)

EN 62061

IEC 61800-5-2

I/O Configuration:

Input Channels: 8

Type: 24V DC safety inputs

Connection: Dual-channel (cross-monitored)

Test Pulses: 1ms/2.1mA (automatic)

Output Channels: 4

Type: 24V DC safety outputs (semiconductor)

Current Rating: 0.5A per channel

Short-Circuit Protection: Yes

Electrical Characteristics:

Input Voltage Range: 20-30V DC

Input Current: 2.5mA @ 24V DC

Output Voltage Drop: <2V @ 0.5A

Response Time: <15ms (including diagnostics)

Cross-Circuit Detection: Yes (inputs and outputs)

Connection & Wiring:

Terminal Type: Removable screw terminal block

Wire Size: 0.25-2.5mm² (AWG 24-12)

Connection Method: Individual wiring per channel

Safe Connection Technology: Spring-loaded terminals available

Diagnostics & Monitoring:

Per-Channel Status Indication: LEDs for each I/O

Detailed Error Messages: Via Automation Studio

Communication Monitoring: Watchdog timer

Supply Voltage Monitoring: Yes

Communication:

Backplane Interface: X2X Link Safety (100Mbps)

Safety Protocol: openSAFETY over POWERLINK

Cycle Time: Configurable (1-10ms typical)

Mechanical Specifications:

Dimensions (W×H×D): 45×126×117mm

Weight: 0.35kg

Mounting: X20 System rail (35mm DIN)

Color: Yellow (safety standard)

Environmental Ratings:

Operating Temperature: -20°C to +60°C

Storage Temperature: -40°C to +85°C

Relative Humidity: 5-95% non-condensing

Vibration Resistance: 5g (10-150Hz)

Shock Resistance: 15g (11ms)

Certifications & Standards:

Safety: TÜV certified (SIL3/PLe)

EMC: EN 61000-6-2, EN 61000-6-4

Industrial: IEC 61131-2

Marine: DNV-GL (optional)

System Integration:

Configuration: Automation Studio Safety

Parameterization: Fully software-configurable

Hot-Swappable: Yes (with proper safety precautions)

Power Consumption: 5W (typical)

Typical Applications:

Safety door monitoring

Emergency stop circuits

Light curtain interfaces

Safe motion monitoring

Hazardous area protection

Ordering Information:

Includes: Safety module, terminal block

Optional: Safety evaluation software package

Key Advantages:
✅ Highest Safety Level - SIL3/PLe certified
✅ Space Efficiency - Combines inputs and outputs
✅ Advanced Diagnostics - Detailed status monitoring
✅ Flexible Integration - Works with standard X20 system

Note:

Requires X20 safety CPU (e.g., X20CP1485)

Must be programmed using Safety Designer in Automation Studio

Regular functional testing required per safety standards

Not for use in explosive atmospheres