4
05.01
4.4 Current reduction/derating
4-91
© Siemens AG 2008 All Rights Reserved
SIMODRIVE 611 Configuration Manual (PJU) – 05/2008 Edition
Factor XT, diagram only for illustration, calculation example in Chapter 4.4.4.
S for MSD–IM and MSD–SRM or IM operation (sensorless)
110
105
100
95
90
85
80
75
70
65
60
55
50
45
40
Power in %
Inverter pulse frequency in kHz
2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 6.5 7.0 7.5 8.0
X
L
= 50%
X
L
= 55%
Fig. 4-6 Power as a function of the inverter pulse frequency for MSD–IM and MSD–RSM
S for FD
110
105
100
95
90
85
80
75
70
65
60
55
50
45
40
Power in %
Inverter pulse frequency in kHz
2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 6.5 7.0 7.5 8.0
X
L
= 50%
X
L
= 55%
Fig. 4-7 Power as a function of the inverter pulse frequency for FD
Pulse frequency–
dependent
derating
4 Power Modules10.0405.08
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