| 摘要 |
The present invention relates to a frequency converter (1) comprising a memory (M1) for storing data; a controller (8) for controlling the operation of the frequency converter by utilizing data (DATA1) stored in the memory (M1); and an interface (10) for connecting the frequency converter to other frequency converters. For efficient and simple backuping and restoration of the backup copy, the frequency converter comprises a backup application (9) for backuping the data (DATA1) stored in the memory (M1) of the frequency converter by retrieving data stored in the memory of the frequency converter and by transmitting the data retrieved over the interface (10) to at least one other frequency converter for storage in a memory (M2, M3) of said at least one other frequency converter; and maintains a backup copy (DATA2, DATA5) of at least one other frequency converter by storing the data received over the interface (10) from said at least one other frequency converter in the memory (M2, M3). |
