Automatic Adaptations To Ensure Performance; Derating For Ambient Temperature - Danfoss VLT AQUA Drive FC 202 Design Manual

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3.5.4 Automatic Adaptations to Ensure Performance

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.
3 3 The capability to reduce the output current automatically extends the acceptable operating conditions even further.

3.5.5 Derating for Ambient Temperature

Frame
model
D-Frame
N110 to N315
380-500 V
E & F-Frame
P355 to P1M0
380-500 V
Table 3.16 Derating Tables for Frequency Converters Rated 380–500 V (T5)
Frame
model
D-Frame
N110 to N315
525-690 V
54
VLT
Normal overload NO, 110% 60 AVM
110
100
90
80
70
60
50
0 1 2 3 4 5
110
100
90
80
70
60
50
0 1 2 3 4
Normal overload NO, 110% 60 AVM
110
100
90
80
70
60
50
0 1 2 3 4
MG20Z102 - VLT
®
AQUA Drive FC 202 Design Guide
110
100
90
80
70
o
45 C
60
o
50 C
o
50
55 C
6 7 8 9
110
100
90
80
o
45 C
70
o
50 C
o
55 C 60
50
5 6 7
110
100
90
80
70
o
45 C
o 60
50 C
o
55 C
50
0
5 5 6 7
®
is a registered Danfoss trademark
Normal overload NO, 110% SFAVM
0 1 2 3 4
0 1 2 3
Normal overload NO, 110% SFAVM
1 2 3
o
40 C
o
45 C
o
50 C
o
55 C
5 6
o
40 C
o
45 C
o
50 C
o
55 C
4 5
o
40 C
o
45 C
o
50 C
o
55 C
4 5