Baumuller BUM 60, Инструкция по эксплуатации

Страница: 32 / 84

General
Instruction handbook BUM 60 / BUS 60
Document No.: 5.01032.05 Baumüller Nürnberg GmbH
32
of 82
4.1
4.1.1 Description of function
The whole unit BUM 60 consists of the three parts feed current converter on the power supply
side, motor-end inverter and controller plug-in card. This documentation does not refer to the
available controllers. Each controller comes with its own documentation.
f
Feed current converter on the power supply side
The feed current converter is an non-controllable B6 rectifier with starting current load relief
and ballast circuit.
f
Starting current load relief
A direct switch-on of the unit would lead to an inadmissibly high level of impulse current, be-
cause of the DC link capacity without starting current load relief. To avoid this impulse current,
the starting current is limited by a resistor.
f
Ballast circuit
In certain operation modes feeds the motor energy to the unit. This energy is stored and leads
to a higher DC link voltage. To avoid reaching the over voltage switch-off threshold, the feed-
back energy is transformed to heat in an internal or external ballast resistor.
f
Motor-end inverter
The motor-end inverter comprises the IGBT power unit and the accompanying detectors. The
detectors supply on the one hand measurement signals and on the other hand the self-pro-
tection facilities of the power electronic.
The control of the inverter is run by the controller.
The power module BUS 60 does not include the parts feed current converter with starting load
relief and ballast circuit. The unit consists only of the motor-end inverter and the controller plug-
in.
With this power module - in connection with units, containing feed current converters - multi axle
systems can be built, that enable a power transfer via the DC link.