If the chassis model of the inverter is IP00 or IP20/NEMA 1, the off-circuit temperature of the heat sink is 90℃. If IP54 is used, the breaking temperature is 80℃. The allowable range is 5℃. The temperature fault cannot be reset until the temperature of the heat sink is lower than 60℃.
Possible faults include:
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Ambient temperature is too high.
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Motor cable is too long
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The switching frequency is too high.
In addition, check whether there is too much dust on the heat sink and whether the cooling fan works normally.