Electrical data power modules
Instruction handbook
b maXX
BM5500, BM5600, BM5700
Document No.: 5.13008.10
Baumüller Nürnberg GmbH
104
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 curre
nt [%]
Derating of the output current
BM5532-XXX8, BM5534-XXX8
DC link voltage [V]
Output curre
nt [%]
Derating of the output current
BM5533-XXX8, BM5535-XXX8
DC link voltage [V]
Abbildung 48: Derating the output current BM553X power modules
6)
The input current must be reduced between 40 °C and 55 °C. Refer to correction factors at changed operating conditions
7)
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.
8)
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
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 voltages 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.
9)
The continuously permitted output current must be reduced complying with
Output frequency dependent continuous current derating
on page 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.
Summary of Contents for b maXX 5500
Page 315: ......
