Coded magnetic safety systems

With coded magnetic sensors and evaluation units, Leuze electronic offers special safety systems for extremely rough environments.

The coded magnetic safety system is intended for guards and, thanks to the closed design and the high-strength plastic housing, is predestined for use under critical environmental conditions such as in the pharmaceutical, food and timber industries; really anywhere pollution from dust and humidity is particularly bad. The safety system always consists of one MC3x sensor, the corresponding actuator and the MSI-MC310 Safety Relay.

The sensor contains a special combination of reed contacts that are contactlessly activated by the coded magnetic field of the actuator. If, for example, a door is opened, the actuator mounted here is separated from the sensor, which is located on the stationary part of the guard and a shut-down signal is triggered.

As a result, risky machine movements can only be executed while the guard is closed; a stop command is executed while the guard is being opened. For guards that are accessible from behind, a reset button can be connected to the Safety Relay for manual starting. The system fulfills safety standards up to Performance Level PL e and safety category 4 in accordance with EN ISO 13849-1.