Derating For Ambient Temperature; Derating For Ambient Temperature, Enclosure Type A; Derating For Ambient Temperature, Enclosure Types B - Danfoss VLT AutomationDrive FC 301 Design Manual
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6.2.6 Derating for Ambient Temperature
6.2.6.1 Derating for Ambient Temperature,
Enclosure Type A
60° AVM - Pulse Width Modulation
I out (%)
110%
100%
80%
60%
40%
20%
0
0
2
4
6
8
10
Illustration 6.2 Derating of I
out
Enclosure Type A, using 60° AVM
SFAVM - Stator Frequency Asyncron Vector Modulation
I
(%)
out
110%
100%
80%
60%
40%
20%
0
0
2
4
6
8
10
Illustration 6.3 Derating of I
out
Enclosures Type A, using SFAVM
When using only 10 m motor cable or less in enclosure
type A, less derating is necessary. This is due to the fact
that the length of the motor cable has a relatively high
impact on the recommended derating.
60° AVM
I
(%)
out
110%
100%
80%
60%
40%
20%
0
0
2
4
6
8
10
Illustration 6.4 Derating of I
out
Enclosures Type A, using 60° AVM and maximum 10 m motor
cable
®
VLT
AutomationDrive FC 301/FC 302 Design Guide, 0.25-75 kW
A1-A3 45°C, A4-A5 40°C
A1-A3 50°C, A4-A5 45°C
A1-A3 55°C, A4-A5 50°C
f sw (kHz)
12
14
16
for Different T
for
AMB, MAX
A1-A3 45°C, A4-A5 40°C
A1-A3 50°C, A4-A5 45°C
A1-A3 55°C, A4-A5 50°C
f sw (kHz)
12
14
16
for Different T
for
AMB, MAX
A1-A3 45°C, A4-A5 40°C
A1-A3 50°C, A4-A5 45°C
A1-A3 55°C, A4-A5 50°C
f sw (kHz)
12
14
16
for Different T
for
AMB, MAX
MG33BF02 - Rev. 2013-12-20
SFAVM
I
(%)
out
110%
100%
80%
60%
40%
20%
0
0
2
4
6
8
10
Illustration 6.5 Derating of I
out
Enclosures Type A, using SFAVM and maximum 10 m motor
cable
6.2.6.2 Derating for Ambient Temperature,
Enclosure Types B
Enclosure B, T2, T4 and T5
For the enclosure types B and C the derating also depends
on the overload mode selected in 1-04 Overload Mode
60° AVM - Pulse Width Modulation
I
(%)
out
HO
110%
100%
80%
60%
40%
20%
0
0
2
4
6
8
10
Illustration 6.6 Derating of I
out
Enclosure Types B1 and B2, using 60° AVM in High overload
mode (160% over torque)
I
(%)
out
NO
110%
100%
80%
60%
40%
20%
0
0
2
4
6
8
Illustration 6.7 Derating of I
out
Enclosure Types B1 and B2, using 60° AVM in Normal
overload mode (110% over torque)
A1-A3 45°C, A4-A5 40°C
A1-A3 50°C, A4-A5 45°C
A1-A3 55°C, A4-A5 50°C
f sw (kHz)
12
14
16
for Different T
for
AMB, MAX
B1
B2
45°C
50°C
55°C
f
(kHz)
sw
12
14
16
for different T
for
AMB, MAX
B1
B2
45°C
50°C
55°C
f
(kHz)
sw
10
12
14
16
for different T
for
AMB, MAX
73
6
6
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