Danfoss VLT AQUA Drive D-Frame Operating Instructions Manual page 80

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.
VLT ® AQUA Drive D-Frame
Operating Instructions
®
MG21A202 - VLT is a registered Danfoss trademark
10 10
77