Baumuller b maXX 5500 - 3.8 Output frequency dependent maximum current derating BM56 XX

Output frequency dependent maximum current derating BM56XX
Instruction handbook b maXX BM5500, BM5600, BM5700
Document No.: 5.13008.10 Baumüller Nürnberg GmbH
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of 314
3.8
3.8 Output frequency dependent maximum current derating BM56XX
For protection of BM56XX devices (acceleration units) at output frequencies below 10 Hz
the maximum current of the drive is limited and the PWM frequency is reduced by half
(e. g. from 4 kHz to 2 kHz or from 8 kHz to 4 kHz).
Figure 56: Reduction BM56XX max. current and PWM frequency at output frequencies < 10 Hz
The maximum current of the drive must be limited more severely at output frequencies
below 10 Hz if no PWM frequency reduction is possible.
Figure 57: Reduction BM56XX only max. current at output frequencies < 10 Hz
10 Hz
75
100
0
4000_0753_rev01_int
%
Output peak
current
Automatical reduction of the
PWM frequency to 4/2 kHz
Output frequency
Max. current drive
10 Hz
50
100
0
5000_0326_rev01_int
%
Hz
Max. drive current available P19.5
Output frequency
Output peak
current P6.25
Max. current drive