All inputs, outputs, circuits, DC supplies and relay contacts are galvanically isolated from the supply voltage (PELV) and
other high-voltage terminals.
Surroundings
Enclosure
IP20
Enclosure kit available
IP21, TYPE 1
Vibration test
1.0 g
Max. relative humidity
5% - 95% (IEC 60721-3-3; Class 3K3 (non-condensing) during operation
Aggressive environment (IEC 60721-3-3), coated (standard) frame H1-H5
Class 3C3
Aggressive environment (IEC 60721-3-3), non-coated frame H6-H10
Class 3C2
Aggressive environment (IEC 60721-3-3), coated (optional) frame H6-H10
Class 3C3
Test method according to IEC 60068-2-43 H2S (10 days)
Ambient temperature
See max. output current at 40/50
°
C in the tables mains supply
Derating for high ambient temperature, see section on special conditions
Minimum ambient temperature during full-scale operation
0
°
C
Minimum ambient temperature at reduced performance, enclosure frame H1-H5
-20
°
C
Minimum ambient temperature at reduced performance, enclosure frame H6-H10
-10
°
C
Temperature during storage/transport
-30 - +65/70
°
C
Maximum altitude above sea level without derating
1000 m
Maximum altitude above sea level with derating
3000 m
Derating for high altitude, see section on special conditions
Safety standards
EN/IEC 61800-5-1, UL 508C
EMC standards, Emission
EN 61800-3, EN 61000-6-3/4, EN 55011, IEC 61800-3
EMC standards, Immunity
EN 61800-3, EN 61000-3-12, 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
1.8 Special Conditions
1.8.1 Derating for Ambient Temperature
and Switching Frequency
The ambient temperature measured over 24 hours should
be at least 5
°
#C lower than the max. ambient temperature.
If the frequency converter is operated at high ambient
temperature, the continuous output current should be
decreased. For derating curve, please see Design Guide
MG18C3YY.
1.8.2 Derating for Low Air Pressure
The cooling capability of air is decreased at low air
pressure. For altitudes above 2000 m, please contact
Danfoss regarding PELV. Below 1000 m altitude no de-
rating is necessary, but above 1000 m the ambient
temperature or the maximum output current should be
decreased. Decrease the output by 1% per 100 m altitude
above 1000 m or reduce the max. ambient temperature by
1
°
per 200 m.
1.9 Options for VLT HVAC Basic Drive FC101
For options please see the Design Guide MG18C3YY.
Quick Guide
VLT HVAC Basic Drive Quick Guide
44
MG18A302 - VLT
®
is a registered Danfoss trademark
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