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Instruction handbook bmaXX 5000
Document No.: 5.09021.19
4DESIGN AND OPERATION
4.1 Design
The bmaXX 5000 series consists of an (active) mains rectifier unit and one or more axis
units, decentralized drive solutions or multi-axis controllers. The possible number of de-
vices, that can be connected depends on the connected load of the DC link of the mains
rectifier unit or is limited by the signal bus to a maximum of 12.
b maXX 50XX Mains rectifier unit
This is a mains rectifier unit for supplying axis units or decentralized drive solutions
BM2500 via the DC link.
The applied AC voltage at the three phase power system is transformed by a rectifier on
the input side into DC voltage. The DC link capacitors smooth this DC voltage.
b maXX 51XX Active mains rectifier unit
This is an active mains rectifier unit for supplying axis units via the DC link.
The applied AC voltage at the three phase power system is transformed by a rectifier on
the input side into DC voltage. The DC link capacitors smooth this DC voltage. The active
mains rectifier unit can feed back excess braking energy into the mains as sinusoidal
electrical current.
b maXX 53XX Single axis unit safety, double axis unit safety
This is a motor inverter that is supplied from a mains rectifier unit or active mains rectifier
unit via the DC link.
From the DC voltage at the DC link, the inverter on the output side produces a three-
phase current system with variable frequency and voltage for operation of the connected
motor.
Controller The controller unit controls the inverter of the power unit. The controller is operated either
by means of operating software or by means of a higher-level control unit.
NOTE!
Correct operation of the bmaXX axis units BM53XX can only be ensured in combi-
nation with Baumüller mains rectifier units BM50XX, BM51XX or basic units
BM4XXX / BM5XXX.
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