• Monitoring of current overshoot and undershoot
• Monitoring of broken conductors
• Monitoring of no-load operation and load shedding, e.g. in the event of a torn V-belt or no-load operation of a pump
• Monitoring of overload, e. g. on pumps due to a dirty filter system
• Monitoring of functionality of electrical loads such as heaters
• Monitoring of incorrect phase sequences on mobile equipment such as compressors or cranes
• Monitoring of high-impedance faults to ground, e. g. caused by damaged insulation or moisture

The use of SIRIUS monitoring relays for IO-Link is particularly recommended for machines and plant in which these relays, in addition to their monitoring function, are to be connected to the automation level for the rapid, simple and fault-free provision of the current measured values and/or for remote parameterization.

The monitoring relays can either relieve the controller of monitoring tasks or, as a second monitoring entity in parallel to and independent of the controller, increase the reliability in the process or in the system. In addition, the elimination of AI and IO modules allows the width of the controller to be reduced despite significantly expanded functionality.