Due to the intensive development of industrial production of power electronics products in recent years, it has become possible to create a whole range of contactless devices that ensure the start and braking of asynchronous electric motors in conditions of a significant reduction in the negative phenomena inherent in the use of traditional electromechanical equipment. As a rule, the attached operating manuals contain sufficient information for connecting, starting and initializing devices, but this information is not enough to properly select their configuration and assess functionality for a specific application, determine the operating mode, analyze failure and emergency situations, diagnose and repair.