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 adjustable frequency drive 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, enclosures, etc.).
•
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 constantly checks for critical internal temperature levels, load current, high voltage on the intermediate circuit
and low motor speeds. As a response to a critical level, the adjustable frequency drive can adjust the switching frequency and/ or change the
switching pattern in order to ensure the performance of the drive.
VLT
®
Automation Drive FC 300
Instruction Manual High Power
5 General Specifications
MG.33.U2.22 - VLT
®
is a registered Danfoss trademark
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