Danfoss FC 300 Operating Instructions Manual page 68

FC 300 Operating Instructions
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 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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General Specifications
MG.33.A5.02 - VLT is a registered Danfoss trademark