Danfoss FC 100 Series Operating Instructions Manual page 144

Specifications
Protection and Features:
•
Electronic thermal motor protection against overload.
•
Temperature monitoring of the heatsink ensures that the frequency converter trips if the temperature reaches 95 °C ±
5°C. An overload temperature cannot be reset until the temperature of the heatsink is below 70 °C ± 5°C (Guideline -
these temperatures may vary for different power sizes, enclosures etc.). The frequency converter has an auto derating
function to avoid it's heatsink reaching 95 deg C.
•
The frequency converter is protected against short-circuits on motor terminals U, V, W.
•
If a mains phase is missing, the frequency converter trips or issues a warning (depending on the load).
•
Monitoring of the intermediate circuit voltage ensures that the frequency converter trips if the intermediate circuit
voltage is too low or too high.
•
The frequency converter is protected against earth faults on motor terminals U, V, W.
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VLT HVAC Drive Operating Instructions
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MG.11.AD.02 - VLT is a registered Danfoss trademark