Allen-Bradley

Guardmaster Safety Relay

 

Model: MSR127TP Catalog Number: 440R-N23132-S

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1. General Description

 

The MSR127TP is a versatile safety monitoring relay from the Allen-Bradley Guardmaster family. It is designed to monitor a variety of safety input devices, such as emergency-stop push buttons, safety gates, and light curtains. A key feature of this model is its inclusion of both immediate and time-delayed safety outputs. The delayed outputs are ideal for applications requiring a controlled stop, allowing machine motion to cease before safety guards can be opened.

This relay is suitable for applications up to Performance Level ‘e’ (PLe) according to ISO 13849-1 and Safety Integrity Level 3 (SIL 3) according to IEC 62061.

 

Key Features

 

• Dual Functionality: Provides both immediate and time-delayed safety outputs in a single unit.
• Versatile Inputs: Monitors dual-channel safety devices for shorts across contacts, shorts to power, and open circuits.
• Configurable Reset: Can be configured for either automatic/manual reset or monitored manual reset.
• Removable Terminals: Simplifies wiring and allows for easy replacement of the unit without disturbing the field wiring.
• LED Indicators: Provides clear status indication for power, input channels, and output status, aiding in diagnostics.

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2. Technical Specifications

 

 

Power Supply

 

 

Inputs & Outputs

 

 

Contact Ratings (Outputs)

 

 

Environmental & Mechanical