Allen Bradley 440R-M23143 Safety Relay with Delayed Outputs

FAQ

Q1: What is the Allen-Bradley 440R-M23143 used for?
The 440R-M23143 is a Guardmaster MSR138DP safety relay used for monitoring emergency-stop circuits, safety gates, light curtains, and other industrial safety devices.

Q2: What type of outputs does the 440R-M23143 provide?
This safety relay includes 2 instantaneous normally open (N.O.) safety outputs and 3 delayed normally open (N.O.) outputs.

Q3: What power supply does the 440R-M23143 require?
The relay operates on a 24V AC/DC power supply with an operating voltage range of approximately 20.4–26.4V.

Q4: What is the delay time range of the 440R-M23143?
The delayed outputs can be adjusted from 0.15 seconds up to 3 seconds depending on the application requirements.

Q5: What safety standards does the 440R-M23143 support?
The relay supports SIL 3, Performance Level e (PLe), and Category 4 safety standards for industrial machine protection.

Q6: What applications commonly use the 440R-M23143?
It is commonly used for monitoring E-stop circuits, safety doors, proximity switches, tactile sensors, and light curtain systems in industrial automation environments.

Q7: What are the dimensions and weight of the 440R-M23143?
The approximate dimensions are 99 × 45 × 114.5 mm, and the unit weighs about 0.35 kg.

Q8: Is the 440R-M23143 suitable for industrial environments?
Yes, the relay is designed for industrial safety applications and supports DIN rail mounting with IP20/IP40 enclosure protection ratings

440R-M23143 Allen Bradley

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