Safeguards
•
Electronic thermal motor protection against overload.
•
Temperature monitoring of the power module ensures that the frequency converter cuts out if the temperature
reaches 100 °C. An overload temperature cannot be reset until the temperature of the power module is below
70 °C.
•
The frequency converter is protected against short-circuits on motor terminals U, V, W.
•
If a mains phase is missing, the frequency converter cuts out.
•
Monitoring of the intermediate circuit voltage ensures that the frequency converter cuts out if the intermediate
circuit voltage is too low or too high.
•
The frequency converter is protected against ground fault on motor terminals U, V, W.
All about VLT 2800 Design Guide
MG27E402 Danfoss A/S © Rev. May/2014 All rights reserved. 145
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