The electrical connection to
the com busbar fuse protected.2.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. 12-pulse bridge configuration can
be implemented with the unit supplied three-
winding transformer with thirty degree phase shift
betw een secondary windings.
Supply unit Drive unit(s)
ACU ICU DSU/TSU/ISU
6 Product series 3AFE68248531 REV 20.2009
. However, an
optional fuse switch with capacitor charging device
can selected disconnect the hole drive unit. separate pulse encoder inter
face module also possible.
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.
Diode supply unit (DSU)
A diode supply unit used non-regenerative
drive systems convert three-phase voltage to
DC voltage
