Baumuller b maXX 5000, Instruction Handbook Manual

Page: 46 / 330

Operating conditions
Instruction handbook b maXX 5000
Document No.: 5.09021.16 Baumüller Nürnberg GmbH
46
of 328
3.3
3.3.3 Requirements for the motor
The b maXX 5000 is designed to operate three phase current motors with a motor termi-
nal voltage of 3 x 350 V (typical for servo motors from Baumüller) or 3 x 400 V (typical for
standard asynchronous motors and for customer-specific special motors from
Baumüller). The motors must be operated in a star connection. The rated DC link voltage
is 540 V
DC
. It can be expected that the DC link voltage increases to up to 780 V or 800 V
in brake operation. The connected motor must be designed to handle these DC link volt-
ages.
If b maXX 5000 axis units are operated with a voltage-controlled DC link (e.g. BM51XX),
then the DC link voltage will be permanently (not only in brake operation)

between 640 V and 760 V. The connected motor must be designed to be operated at
these voltages in continuous operation.
It is also possible to operate the devices at lower voltages, e.g. 3 x 230 V. A prerequisite,
however, is that the three phase current motors used for operation with converters rated
for an DC link voltage of up to 800 V, as the brake resistor voltage (refer to
Z Electrical
data – as from page 58) remains unchanged.

Thus, only three phase current motors with U
DC link, rated

540 V may be used in these
cases as well.