Siemens SINAMICS S120/S150 Drive
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Feb 21, 2024 8:55 am
Cause : Power unit - Overtemperature depletion layer chip comes when threshold for overtemperature of the power semiconductor in the AC converter has been reached.
- is the ambient temperature within the defined limit values?
- have the load conditions and the load duty cycle been appropriately dimensioned?
- has the cooling failed?
- pulse frequency too high?