Product Description:

The Allen-Bradley 440R-D22S2 is a Guardmaster dual-input solid-state output safety relay designed for implementing complex safety functions in industrial automation.¹ This relay features two dual-channel universal inputs, configurable AND/OR logic via a rotary switch, one single-wire safe input, one single-wire safe output, one normally closed (N.C.) solid-state immediate auxiliary output, and two normally open (N.O.) immediate safety outputs.² It operates on a 24V DC power supply and includes removable terminals for easy wiring. The reset function can be configured for automatic/manual or manual monitored reset.³

Key Features:

• Guardmaster Series: Designed for reliable safety interlocking and monitoring.
• Two Dual-Channel Universal Inputs: Provides flexibility for connecting various safety devices.⁴
• Configurable AND/OR Logic: Allows for flexible configuration of input logic to meet specific application requirements.⁵
• Single-Wire Safe Input and Output: Supports single-wire safety connections, reducing wiring complexity.
• Immediate Outputs: Provides fast response times for safety functions.
• 24V DC Power Supply: Operates on a standard 24V DC power supply.
• Removable Terminals: Simplifies wiring and maintenance.
• Configurable Reset (Automatic/Manual or Manual Monitored): Offers flexibility in reset behavior.⁶

Technical Specifications:

• Product Type: Safety Relay
• Catalog Number: 440R-D22S2
• Series: Guardmaster
• Inputs: 2 Dual-Channel Universal Inputs, 1 Single-Wire Safe Input⁷
• Outputs: 2 N.O. Immediate Safety Outputs, 1 Single-Wire Safe Output, 1 N.C. Solid-State Immediate Auxiliary Output
• Logic: Configurable AND/OR (Rotary Switch)
• Power Supply: 24V DC
• Reset: Configurable Automatic/Manual or Manual Monitored

Applications:

• Complex machine safety control
• Safety interlock systems with multiple inputs and logic requirements
• Emergency stop systems
• Safety gate monitoring
• Light curtain interfacing

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Common Typos

• 440R-D2252
• 440R-D225Z
• 440R-D22SZ
• 440R-D2Z52
• 440R-D2Z5Z
• 440R-D2ZS2
• 440R-D2ZSZ
• 440R-DZ252
• 440R-DZ25Z
• 440R-DZ2S2
• 440R-DZ2SZ
• 440R-DZZ52
• 440R-DZZ5Z
• 440R-DZZS2
• 440R-DZZSZ
• 44OR-D2252
• 44OR-D225Z
• 44OR-D22S2
• 44OR-D22SZ
• 44OR-D2Z52
• 44OR-D2Z5Z
• 44OR-D2ZS2
• 44OR-D2ZSZ
• 44OR-DZ252
• 44OR-DZ2S2
• 44OR-DZ2SZ

Appended Numbers

• 440R-D22S2-A
• 440R-D22S2-B
• 440R-D22S2-C
• 440R-D22S2-D
• 440R-D22S2-E
• 440R-D22S2-F
• 440R-D22S2-G
• 440R-D22S2-H
• 440R-D22S2-I
• 440R-D22S2-J
• 440R-D22S2-K
• 440R-D22S2-L
• 440R-D22S2-M
• 440R-D22S2-N
• 440R-D22S2-O
• 440R-D22S2-P
• 440R-D22S2-Q
• 440R-D22S2-R
• 440R-D22S2-S
• 440R-D22S2-T
• 440R-D22S2-U
• 440R-D22S2-V
• 440R-D22S2-W
• 440R-D22S2-X
• 440R-D22S2-Y
• 440R-D22S2-Z

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