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Protection and Features
•
Electronic thermal motor protection against overload.
•
Temperature monitoring of the heatsink ensures that the adjustable frequency drive trips if the temperature
reaches 203° F ± 10° F [95
°
C
±
5
°
C]. An overload temperature cannot be reset until the temperature of the heatsink
is below 158° F ± 9° F [70
°
C
±
5
°
C] (Guideline - these temperatures may vary for different power sizes, enclosures,
etc.). The adjustable frequency drive has an auto derating function to avoid its heatsink reaching 203° F [95
°
C].
•
The adjustable frequency drive is protected against short-circuits on motor terminals U, V, W.
•
If a line phase is missing, the adjustable frequency drive trips or issues a warning (depending on the load).
•
Monitoring of the intermediate circuit voltage ensures that the adjustable frequency drive trips if the intermediate
circuit voltage is too low or too high.
•
The adjustable frequency drive is protected against ground faults on motor terminals U, V, W.
Specifications
VLT
®
Refrigeration Drive Instruction Manual
10-8
MG16J122 - VLT
®
is a registered Danfoss trademark
10
10