| 摘要 |
A running pattern of one cycle in a preset industrial machine is observed by a current detector (31) and a temperature rise value estimating unit (32) that are additionally provided in a conventional inverter device. The temperature rise value estimating unit (32) derives a maximum temperature rise estimated value for each constituent element in the case where the running pattern is periodically repeated, on the basis of observation data of the one cycle and a temperature rise model of each constituent element of the inverter device.
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