Danfoss VLT FC 103 Operating Instructions Manual page 77

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 its heatsink reaching 95 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 (ground) faults on motor terminals U, V, W.
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VLT Refrigeration Drive Operating Instructions
MG16J102 - VLT is a registered Danfoss trademark
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