12-pulse bridge configuration can
be implemented with the unit supplied three-
winding transformer with thirty degree phase shift
betw een secondary windings.2. separate pulse encoder inter
face module also possible.
Diode supply unit (DSU)
A diode supply unit used non-regenerative
drive systems convert three-phase voltage to
DC voltage.
Supply unit Drive unit(s)
ACU ICU DSU/TSU/ISU
6 Product series 3AFE68248531 REV 20.Overview the construction
A multidrive made several different units (see
figure below These sections are called multidrive
units and the most important units are:
■ drive units
■ diode supply units
■ supply units
■ thyristor supply units
■ dynamic braking units
■ control units (optional)
Drive units
Inverters have inbuilt capacitors for smoothing the
voltage the busbars. Other optional features
include the prevention unexpected start-up for the
inverters provide safe interlock for the system. However, an
optional fuse switch with capacitor charging device
can selected disconnect the hole drive unit.2009
.
Each inverter has drive control unit (DCU) which
contains the RMIO board and optional I/O modules.
Several different I/O extension modules for different
functions such control, monitoring and measurement
purposes are available. The electrical connection to
the com busbar fuse protected
