separate pulse encoder inter
face module also possible.3. . However, an
optional fuse switch with capacitor charging device
can selected disconnect the whole drive unit. These sections are called
multidrive units and the most important units are:
■ drive units
■ diode supply units
■ IGBT supply units
■ thyristor supply units
■ dynamic braking units
■ control units (optional)
Drive Units
Inverters have built-in capacitors for smoothing the
voltage the busbars.
.
Diode Supply Unit (DSU)
A Diode Supply Unit used non-regenerative drive
systems convert three-phase voltage DC
voltage.
■
Each inverter has Drive Control Unit (DCU) which
contains the RMIO Board and optional I/O modules. The electrical connection to
the common busbar fuse protected.
ACU
Supply Unit
ICU DCU/TSU/ISU
Drive Unit(s)
6 3AFE 68248531 REV 31.
Several different I/O extension modules for different
functions such control, monitoring and measurement
purposes are available. 12-pulse bridge configuration can imple
mented with the unit supplied three-winding
transformer with thirty degree phase shift between
secondary windings. Other optional features
include the prevention unexpected start-up for the
inverters provide safe interlock for the system.Overview the construction
An ABB multidrive made several different
units (see figure below).2004
