Danfoss FC 102

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
(%)
f
sw
(kHz)
Illustration 9.4 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
f
sw
(kHz)
Illustration 9.5 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
f
sw
(kHz)
Illustration 9.6 Derating of I
out
for Different T
AMB, MAX
for
Enclosures Type A, using SFAVM and maximum 10 m motor
cable
9.6.3.1
Enclosure Type A3, T7
1
20%
2 3 4 5
40%
60%
80%
100%
110%
I
out
(%)
f
sw
(kHz)
I
LOAD
at T
AMB
max
130BD596.10
0
0
I
LOAD
at T
AMB
max +5 °C
I
LOAD
at T
AMB
max +5 °C
Illustration 9.7 Derating of I
out
for Different T
AMB, MAX
for
Enclosure Type A3
9.6.4
Derating for Ambient Temperature,
Enclosure Type B
9.6.4.1 Enclosure Type B, T2, T4 and T5
For the B and C enclosure types 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)
0
0
I
out
(%)
NO
45°C
50°C
55°C
130BA401.11
B1
B2
Illustration 9.8 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)
General Specifications and ... Design Guide
MG11BC02 Danfoss A/S © Rev. 06/2014 All rights reserved. 165
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