Danfoss FC 300 Design Manual page 90

4 AutomationDrive FC 300 Selection
Frame Size B (except B2 525-690 V)
For the B and C frames the derating also depends on the overload mode selected in par. 1-04
60º AVM - Pulse Width Modulation
4
Illustration 4.6: Derating of I
frame size B, using 60º AVM in High torque mode (160%
over torque)
Illustration 4.8: Derating of I
frame size B, using 60º AVM in Normal torque mode (110%
over torque)
Frame Size B2, 525-690 V
Illustration 4.10: Output current derating with switching fre-
quency and ambient temperature for frame size B2, 60º
AVM. Note: The graph is drawn with the current as absolute
value and is valid for both high and normal overload.
90
for different T for
out AMB, MAX
for different T for
out AMB, MAX
MG.33.BC.02 - VLT
Overload Mode
SFAVM - Stator Frequency Asyncron Vector Modulation
Illustration 4.7: Derating of I
frame size B, using SFAVM in High torque mode (160% over
torque)
Illustration 4.9: Derating of I
frame size B, using SFAVM in Normal torque mode (110%
over torque)
Illustration 4.11: Output current derating with switching fre-
quency and ambient temperature for frame size B2, SFAVM.
Note: The graph is drawn with the current as absolute value
and is valid for both high and normal overload.
® is a registered Danfoss trademark
FC 300 Design Guide
for different T for
out AMB, MAX
for different T for
out AMB, MAX