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
83
of 358
3
6)
At rated power supply voltage the unit supplies rated / maximum output currents. With input voltages above the rated power supply
voltage the output currents must be reduced at constant output power
Output cur
rent
[%
]
Derating of the output current BM4X7X
Power supply voltage [V]
Figure 39: Derating the output current BM 447X universal units
7)
The input current must be reduced between 40 °C and 55 °C. See correction factors at changed operating conditions Z Environmental
temperature – on page 57
8)
Two temperature values may occur (cooling air, which flows through the internal space of the device / cooling air, which flows through
the heat sink). Enter the higher value.

Example: Rated output current = 150 A environmental temperature = 46 °C

Io 150A
1
46°C - 40°C
°C
--------------------------------
0 03
 
 
 
–
 
 

150A 0 82
 
= = The output current must be reduced to: 123 A
9)
The peak output current is supplied for the maximum peak current period for the motor at the first acceleration (cold power unit). The in
fact possible overload time is dependent on the preload of the device and on the heat sink temperature, it is determined by the overload
monitoring of the device.
10)
The sum of the instantaneously drawn power via the DC link terminals and the input power (motor output / motor efficiency) of the motor
at the same time may not exceed the maximum power input of 250 kW and 315 kW.
11)
If UL508C is complied with: max. 4.0 A.
12)
See Z Motor requirements – on page 54.
13)
If UL508C is complied with:

The permitted typical motor output is limited to 295 kW at a maximum. The device BM4473 belongs to the category < 400 HP, < 298
kW ratings complying with table 45.1 of UL508C. Therefore, the short-circuit test using 18k A can be executed. Baumüller does not offer
devices in the class 600 HP, 447 kW with 30 kA short-circuit current in accordance with UL508C.
14)
The range of the output frequency is based on a stationary operation in the linear range of the PWM, i. e. without overmodulation.

The quality of the generated output voltages depends on the ratio between output frequency and current controller frequency f
I-R

( f
I-R
= 1/cycle time current controller).

The maximum output frequency f
max
, generated with high quality, is calculated as follows:

f
max
f
I-R
K
pf
--------
, typical K
Pf
18

=

Furthermore the controller sets an upper limit for the output frequency of 599 Hz (please contact the responsible Baumüller sales de-
partment, keyword: export restriction).

The range of the output frequency is defined as follows:
PWM frequency Current controller cycle time Range of the output frequency
2 kHz 250 µs 0 - 225 Hz
4 kHz/8 kHz 125 µs 0 - 450 Hz

The controller allows the device to generate output voltages with frequencies between f
max
and 599 Hz. However the quality of this volt-
ages cannot be guaranteed.

Typical the devices are marked with the max output frequency at 4 kHz switching frequency: 0 ... 450 kHz.
15)
The continuously permitted output current must be reduced complying with Z Output frequency dependent continuous current derating
BM4XXX – on page 112, if the statical output frequency is lower than 15 Hz and the frequency remains between 0 and 15 Hz for over
5 seconds.