Allen-Bradley | 440R-EM4R2D | Guardmaster

Product Description: Allen-Bradley 440R-EM4R2D

The Allen-Bradley 440R-EM4R2D is an expansion module within the Guardmaster Safety Relay (GSR) family, designed to provide four delayed normally open (N.O.) safety outputs. It integrates seamlessly with other GSR units via a Single Wire Safety (SWS) connection, allowing for scalable and flexible safety system architectures. This module is ideal for applications requiring time- delayed safety outputs, such as controlled machine stopping sequences.

Key Features

• Four delayed N.O. safety outputs
• Single Wire Safety (SWS) input and output for easy expansion
• Configurable for on-delay, off-delay, or jog functions
• Rotary switches for setting delay time and function
• Removable screw terminals for simplified wiring
• LED indicators for power, fault, and logic status
• Compact 22.5 mm housing suitable for DIN rail mounting
• Complies with EN ISO 13849-1 Performance Level e and SIL 3 standards

Technical Specifications

• Supply Voltage: 24V DC
• Safety Outputs: 4 delayed N.O. contacts
• Auxiliary Output: None
• Input Configuration: Single Wire Safety (SWS) input
• Reset Modes: Not applicable (controlled via SWS input)
• Delay Time Range: Configurable up to 300 seconds
• Power Consumption: Approximately 3.5 W
• Mounting: 35 mm DIN rail
• Housing Width: 22.5 mm
• Operating Temperature: -5°C to +55°C (23°F to 131°F)
• Enclosure Rating: IP40 (housing), IP20 (terminals)
• Certifications: CE, cULus, TUV, CCC

Application Areas

• Machinery requiring controlled stop sequences
• Safety systems with delayed shutdown requirements
• Integration with other GSR modules for expanded safety functions
• Industrial applications needing flexible safety relay configurations

Advantages

• Enhances safety system flexibility with delayed output functionality
• Simplifies system expansion through SWS connectivity
• Compact design conserves control panel space
• Easy configuration and installation
• High reliability and compliance with international safety standards