Solenoid interlock switch without positive-linked mechanical locking mechanism

The MZM100 Safety switch from Schmersal is now available from RS Components. It has a solenoid interlock without a positive-linked mechanical locking mechanism. It uses an electromagnet to generate a 500N holding force and then transmits the signal 'interlock locked' to the safety-monitoring module. The forced-closed operating principle of the MZM100 switch offers multiple advantages. Mechanical wear becomes a thing of the past because of the absence of moving parts. The actuator and the locking mechanism are free from play and therefore neutralise undesired noises, even on machines with high vibrations. Despite the absence of play between actuator and interlock, the system tolerates large door misalignments. The smooth surfaces of actuator and interlock furthermore provide for the simplicity of cleaning.