3)
Derating for high ambient temperature, see special conditions in the Design Guide
Minimum ambient temperature during full-scale operation 0°C
Minimum ambient temperature at reduced performance - 10°C
Temperature during storage/transport -25 - +65/70°C
Maximum altitude above sea level without derating 1000m
Derating for high altitude, see special conditions in the Design Guide
EMC standards, Emission EN 61800-3, EN 61000-6-3/4, EN 55011
EMC standards, Immunity
EN 61800-3, EN 61000-6-1/2,
EN 61000-4-2, EN 61000-4-3, EN 61000-4-4, EN 61000-4-5, EN 61000-4-6
See section on special conditions in the Design Guide.
Protection and Features:
•
Electronic thermal motor protection against overload.
•
Temperature monitoring of the heatsink ensures that the frequency converter trips if the temperature reaches a
predefined level. An overload temperature cannot be reset until the temperature of the heatsink is below the values
stated in the tables on the following pages (Guideline - these temperatures may vary for different power sizes, frame
sizes, enclosure ratings 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 constantly checks for critical levels of internal temperature, load current, high voltage on the
intermediate circuit and low motor speeds. As a response to a critical level, the frequency converter can adjust the
switching frequency and/ or change the switching pattern in order to ensure the performance of the frequency
converter.
Specifications
VLT
®
AutomationDrive Operating
Instructions
MG.33.AJ.02 - VLT
®
is a registered Danfoss trademark 75
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