Allen-Bradley 440R-DG2R2T Guardmaster Safety Relay

Product Description:

The Allen-Bradley 440R-DG2R2T Guardmaster Multifunction DG (Dual GuardLink) Safety Relay is a highly versatile and configurable safety relay designed for complex safety applications. This relay achieves Performance Level e (PLe) according to EN ISO 13849-1 and Safety Integrity Level 3 (SIL 3) according to IEC 61508.¹ It features two safety inputs that can accept GuardLink, OSSD (Output Signal Switching Device), and traditional N.C. (Normally Closed) signals.² It also offers two N.O. (Normally Open) safety outputs, two SWS (Safe Work Stop) inputs, and two SWS outputs.³ The relay supports both instantaneous and time-delayed safety functions and operates on 24V DC power.⁴

Key Features:

• Guardmaster Multifunction DG (Dual GuardLink): Offers advanced safety functionality and integration with GuardLink safety systems. Dual GuardLink means it can handle two separate GuardLink chains.
• PLe (EN ISO 13849-1) / SIL 3 (IEC 61508): Meets high safety standards for critical safety applications.⁵
• 2 Safety Inputs (GuardLink, OSSD, N.C.): Provides flexible input options for various safety devices.⁶
• 2 N.O. Safety Outputs: Provides two normally open safety outputs for controlling safety-related circuits.⁷
• 2 SWS Inputs / 2 SWS Outputs: Offers Safe Work Stop functionality for controlled machine stopping.⁸
• Instantaneous and Time Delay: Supports both immediate and time-delayed safety responses.⁹
• 24V DC Power: Operates on a standard industrial 24V DC supply.¹⁰

Technical Specifications:

• Product Type: Multifunction Safety Relay
• Catalog Number: 440R-DG2R2T
• Series: Guardmaster DG (Dual GuardLink)
• Safety Performance Level: PLe (EN ISO 13849-1)
• Safety Integrity Level: SIL 3 (IEC 61508)
• Safety Inputs: 2 (GuardLink, OSSD, N.C.)
• Safety Outputs: 2 N.O.
• SWS Inputs: 2
• SWS Outputs: 2
• Timing Functions: Instantaneous and Time Delay (Specify the range of time delays from documentation)
• Power Supply: 24V DC

Applications:

• Complex machine safety applications
• Safety interlocking
• Emergency stop systems
• Guard monitoring
• Applications requiring high levels of safety integrity

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