6.2.6 Derating for Ambient Temperature
6.2.6.1 Derating for Ambient Temperature,
Enclosure Type A
60
°
AVM - Pulse Width Modulation
2
20%
4
6
8
10
12
14
16
40%
60%
80%
100%
110%
Iout (%)
fsw (kHz)
A1-A3 45°C, A4-A5 40°C
A1-A3 50°C, A4-A5 45°C
A1-A3 55°C, A4-A5 50°C
130BA393.10
0
0
Illustration 6.2 Derating of I
out
for Different T
AMB, MAX
for
Enclosure Type A, using 60
°
AVM
SFAVM - Stator Frequency Asyncron Vector Modulation
2
20%
4
6
8
10
12
14
16
40%
60%
80%
100%
110%
A1-A3 45°C, A4-A5 40°C
A1-A3 50°C, A4-A5 45°C
A1-A3 55°C, A4-A5 50°C
0
0
130BD639.10
I
out
(%)
fsw (kHz)
Illustration 6.3 Derating of I
out
for Different T
AMB, MAX
for
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
2
20%
4
6
8
10
12
14
16
40%
60%
80%
100%
110%
I
out
(%)
A1-A3 45°C, A4-A5 40°C
A1-A3 50°C, A4-A5 45°C
A1-A3 55°C, A4-A5 50°C
0
0
130BA394.10
fsw (kHz)
Illustration 6.4 Derating of I
out
for Different T
AMB, MAX
for
Enclosures Type A, using 60
°
AVM and maximum 10 m motor
cable
SFAVM
2
20%
4
6
8
10
12
14
16
40%
60%
80%
100%
110%
I
out
(%)
A1-A3 45°C, A4-A5 40°C
A1-A3 50°C, A4-A5 45°C
A1-A3 55°C, A4-A5 50°C
0
0
130BD640.10
fsw (kHz)
Illustration 6.5 Derating of I
out
for Different T
AMB, MAX
for
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
2
20%
4
6
8
10
12
14
16
40%
60%
80%
100%
110%
f
sw
(kHz)
45°C
50°C
55°C
130BA402.10
0
0
I
out
(%)
HO
B1
B2
Illustration 6.6 Derating of I
out
for different T
AMB, MAX
for
Enclosure Types B1 and B2, using 60
°
AVM in High overload
mode (160% over torque)
2
20%
4
6
8
10
12
14
16
40%
60%
80%
100%
110%
f
sw
(kHz)
0
0
I
out
(%)
NO
45°C
50°C
55°C
130BA401.11
B1
B2
Illustration 6.7 Derating of I
out
for different T
AMB, MAX
for
Enclosure Types B1 and B2, using 60
°
AVM in Normal
overload mode (110% over torque)
Product Specifications
VLT
®
AutomationDrive FC 301/FC 302 Design Guide, 0.25-75 kW
MG33BF02 - Rev. 2013-12-20
73
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