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Instruction handbook b maXX BM5500, BM5600, BM5700
Document No.: 5.13008.10
4DESIGN AND OPERATION
The devices b maXX BM5500, BM5600, BM5700 consist of a power unit and a controller
part within one housing.
The devices differ in size, power, equipment (hard- and software) and cooling types, for
further information refer to ZType code– from page 124.
4.1 Design
Basic unit The present alternating voltage at the three-phase system is converted into direct voltage
by the input sided rectifier. The DC link capacitors smooth this DC link direct voltage. The
output sided inverter generates a three-phase system from the direct voltage with variable
frequency and voltage for the supply of the connected motor.
Additionally you can draw d. c. from the device via the DC link connections.
Power module The output sided inverter generates a three-phase system via the DC link connection
from the direct voltage with variable frequency and voltage for the supply of the connected
motor.
BM5500 BM5500 are universal units, for achieving electrical drives in industrial applications.
BM5500 offers the largest configuration possibilities as well as the most available options.
BM5600 BM5600 (acceleration units) are especially developed servo drives derived from BM5500
for acceleration applications. Characteristic for these devices is, that the peak current is
twice as large as the rated current, even at large output currents. The devices were de-
veloped for a cycle, which could provide the peak current for 1.25 s at a whole cycle du-
ration of 5 s according to ZFigure 31– on page 57.
This units are not developed for peak current using at standstill or output frequencies low-
er than 10 Hz. For this units the ZOutput frequency dependent maximum current derating
BM56XX– from page 120 is valid.
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