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The control
also provides near unity power factor.
Higher power needed, for exam ple, high power
applications here gives ore drive flexibility to
connect drive units the sam bus, for high
overload requirements.
AC800M control unit (optional)
The multidrive concept also includes the control
unit for the AC800M and S800 I/O. The converter can operate both
m otoring and generating odes.2.
Standard braking resistors are separately available in
their own cabinets. ISU dimensioned for braking
pow and operates continuously, while DSU is
dimensioned for otor power minus ISU power. This possibility concerns parallel
connection two diode supply units (DSU+DSU), two
IG supply units (ISU+ISU), DSU and ISU to
the same bus. The unit can
also boost voltage e.
Thyristor supply unit (TSU)
A thyristor supply unit used regenerative drive
systems convert three-phase voltage DC
voltage.
Using DSU+ISU connected parallel solution for
w hen the need for braking pow uch lower than
for motoring power.IGBT supply unit (ISU)
An IGBT supply unit used regenerative drive
systems convert three-phase voltage DC
voltage.
This configuration reduces harmonics the supply
network.g. Non-standard resistors can used
providing that the specified resistance value not
decreased and that the heat dissipation capacity the
resistor sufficient for the drive application.
Harmonic content remains extremely low due DTC
control and LCL filtering.
Redundancy needed critical processes and also
w hen aintenance intervals are long. pow control gives the sam firm but
gentle perform ance DTC gives otor control. The control
perform ance excellent due the ultra-fast control
technology, the same DTC.
The main circuit consists main switch, filter
and converter.
A fully regenerative supply unit with power
factor requires pow compensation. The thyristor supply unit contains two 6-pulse
thyristor bridges antiparallel connection. The converter hardware compatible
with drive units.
These two units will located the rear ends of
the drive bus.
3AFE68248531 REV 20. The control unit
is equipped with communication interfaces, power
supplies and the front-devices necessary for the
automation equipment. hen line voltage low.
Brake unit
In resistor braking henever the voltage the
intermediate circuit frequency converter exceeds a
certain limit, braking chopper connects the circuit to
a braking resistor.2009 Product series. The voltage
constant and the line current sinusoidal. has the
ability regenerate back the mains, providing
considerable energy savings with applications
having excessive braking powers. 12-pulse bridge
configuration can implemented with two thyristor
supply units supplied three-winding transformer.
Parallel connected supply units
It possible connect two supply units parallel to
the same bus get higher pow redundancy
