A METHOD FOR INDICATING A NEED FOR MAINTENANCE OF AN ELECTRIC DRIVE APPARATUS, AND AN ELECTRIC DRIVE APPARATUS

The present invention relates to the field of testing and maintenance of electric automation devices, such as testing and maintenance of electric drive apparatuses and to the field of electric drives used for industrial applications, and more particularly to a method for indicating a need for maintenance of an electric drive apparatus and to an electric drive apparatus. An electric drive apparatus of an installation consisting of one or more electric drive apparatuses according to the present invention has a calculation unit (7) for collecting maintenance data relevant to the maintenance of the electric drive apparatus and calculating (10) the collected maintenance data, a maintenance need notification unit (27) for determining the energy efficiency of the electric drive by analysing the collected energy efficiency data together with the applicable standard values set for energy efficiency, a communication unit (28) comprising a transmitter for sending the information of the need for maintenance to other electric drive apparatuses (30), (31) of the said installation, and a receiver for receiving the information on the need for maintenance of the said other electric drive apparatuses (30), (31) in the near future, a maintenance alarm synchronization unit (29) for generating a synchronized maintenance alarm (42), (44), (47) of one or more electric drive apparatuses, and an alarm indication unit (9) for indicating the said synchronized maintenance alarm to the user.