Electrical data power modules
Instruction handbook b maXX BM5500, BM5600, BM5700
Document No.: 5.13008.10 Baumüller Nürnberg GmbH
112
of 314
3.5
5)
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 current [%]
Derating of the output current
BM5572-XXX8, BM5573-XXX8
Power supply voltage [V]
Figure 52: Derating the output current BM557X power modules
6)
The input current must be reduced between 40 °C and 55 °C. Refer to correction factors at changed operating conditions ZEnviron-
mental temperature– on pag
e 55
7)
Two temperature values may occur (cooling air, which flows through the internal space of the device / cooling air, which flows through
the heatsink). Enter the higher value.
Example: Rated output current = 150 A environmental temperature = 46 °C
I
o
150A 1
46°C - 40°C
°C
--------------------------------
003
–
150A 0 82==
The output current must be reduced to: 123 A
8)
The possible overload time at this moment is dependent of the device load and the heat sink temperature. The device load is determined
by the overload monitoring of the device.
9)
If UL508C is complied with: max. 4.0 A.
10)
If UL508C is complied with:
The permitted typical motor output is limited to 295 kW at a maximum. Th
e device BM5573 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.
11)
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 betw
een 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 125 µs 0 - 450 Hz
8 kHz 62.5 µs 0 - 599 Hz (900 Hz
*)
)
*)
900 Hz could be generated by the controller
The device is able to generate output voltage
s with frequencies between f
max
and 599 Hz and the controller allows that, however the
quality of this voltages cannot be guaranteed.
Typical the devices are marked with the max output frequency at 4 kHz switching frequency: 0 ... 450 kHz.
12)
The continuously permitted output current must be reduced complying with ZOutput frequency dependent continuous current derating
BM5XXX– on pa
ge 119 if the statical output frequency is lower than 15 Hz and the frequency remains between 0 and 15 Hz for more
than 5 seconds.
13)
Please contact Baumüller Nürnberg if you need a higher power output.
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