Baumuller b maxx BM4400, Инструкция по эксплуатации

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Technical Data
Instruction handbook b maXX BM4400, BM4600, BM4700
Document No.: 5.12008.07
113
of 358
3
3.8 Output frequency dependent maximum current derating BM46XX
For protection of BM46XX 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 53: Reduction BM46XX 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 54: Reduction BM46XX 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