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Allen Bradley

Allen Bradley 440R-DG2R2T Guardmaster Dual GuardLink Safety Relay

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ManufacturerAllen Bradley

Part number440R-DG2R2T

Power Supply 24V DC

Safety Integrity Level PLe SIL 3

Safety Inputs 2 (GuardLink, OSSD, N.C.)

Safety Outputs 2 NO

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Veteran-owned

CAGE: 9NK75

Dual GuardLink technology PLe SIL 3 safety rating 2 Safety Inputs (GuardLink, OSSD, N.C.) 2 Normally Open Safety Outputs DIN rail mount

Product description

The Allen-Bradley 440R-DG2R2T is a Multifunction Dual GuardLink Safety Relay that offers advanced safety monitoring capabilities. It operates on a 24V DC power supply and provides PLe SIL 3 safety integrity. This relay features two safety inputs compatible with GuardLink, OSSD, and N.C. devices, along with two Normally Open (NO) safety outputs. It also includes two SWS inputs and two SWS outputs.

This dual GuardLink safety relay is designed for applications requiring high-level safety and diagnostics, such as monitoring safety gates, emergency stops, and light curtains. The GuardLink technology allows for serial connection of safety devices, simplifying wiring and enhancing diagnostic visibility down to individual devices. It is suitable for use in manufacturing, automotive, and general industrial automation.

Stanlo Automation, a veteran-owned surplus parts distributor, offers the Allen-Bradley 440R-DG2R2T. We provide reliable access to quality industrial automation components, ensuring your safety systems are efficient and cost-effective.

Technical specifications

Power Supply	24V DC
Safety Integrity Level	PLe SIL 3
Safety Inputs	2 (GuardLink, OSSD, N.C.)
Safety Outputs	2 NO
SWS Inputs	2
SWS Outputs	2
Width	22.5 mm

Common applications

Safety gate monitoring

Emergency stop monitoring

Light curtain monitoring

Machine guarding

Industrial automation safety

Compatible systems

GuardLink-enabled safety devices

Also known as

Allen Bradley Dual GuardLink Safety Relay, Guardmaster Safety Relay 440R-DG2R2T

Replaces / compatible with

The 440R-DG2R2T replaces previous generations of dual-input safety relays and is designed to work with GuardLink-enabled safety devices for enhanced diagnostics and simplified wiring.

Technical note

Expert tip

The integrated GuardLink functionality simplifies wiring by allowing multiple safety devices to be connected in series, reducing cable runs and I/O count.

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Frequently asked questions

What is GuardLink technology in the Allen Bradley 440R-DG2R2T relay?

GuardLink is an Allen-Bradley technology that allows safety devices to be connected in series, simplifying wiring and providing enhanced diagnostic information down to the individual device level. The 440R-DG2R2T utilizes this technology for advanced safety monitoring.