A5000 alarm in siemens sinamics V90 drive indicates Drive heat sink overtemperature. This means the power stage is getting too hot and is within 5°C of triggering a critical fault shutdown.
Cause: The alarm threshold for overtemperature at the inverter heat sink has been reached. If the temperature of the heat sink increases by an additional 5 K, then fault F30004 is initiated.
Remedy: Check the following:
- Is the surrounding temperature within the defined limit values?
- Have the load conditions and the load duty cycle been appropriately dimensioned?
- Has the cooling failed?
