Product Description

Leuze MSI-TR1 Standstill Monitor

The Leuze MSI-TR1 is a high-performance safety relay designed for reliable standstill monitoring of three-phase asynchronous motors. It operates by measuring the remanence voltage of the motor windings, providing a safe signal when the motor has come to a complete stop. This functionality is crucial for applications requiring safe access to hazardous areas, such as unlocking guard doors or enabling maintenance procedures only after machine motion has ceased. The MSI-TR1 ensures high safety standards, complying with Category 4 and Performance Level e (PL e) according to EN ISO 13849-1. Its compact design and easy configuration via a front-panel potentiometer make it a versatile and user-friendly solution for machine safety systems.

Technical Specifications:

  • Function: Standstill monitor for 3-phase motors

  • Supply Voltage: 24 V DC, -15% / +20%

  • Safety Category: Up to Cat. 4, PL e in accordance with EN ISO 13849-1

  • Safety Outputs: 2 x NO (Normally Open), relay contacts

  • Signaling Output: 1 x PNP transistor output

  • Threshold Voltage (Adjustable): 20 mV to 500 mV

  • Connection Type: Screw terminals

  • Dimensions (W x H x D): 22.5 mm x 96.5 mm x 114 mm

Leuze MSI-TR1 Description

Leuze MSI-TR1

Leuze MSI-TR1 safety relay for reliable standstill monitoring of 3-phase motors. Ensures machine safety up to PL e, Category 4, with adjustable threshold and compact design.