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2.Multidrives
The multidrive principle based standard bus
arrangement enabling single pow entry and com on
braking resources for several drives.2009 Product series.
■ The common supply the multidrive enables the
implementation overall safety and control functions.
The shafts the individual drive motors can more
or less tightly coupled. But also those cases here the
shafts the individual drive otors are not tightly
coupled, for exam ple sugar centrifuges, each drive
module can programmed with speed profile
in order minimize overall energy consumption. tight coupling, for exam ple
in paper achine, the individual ABB drive modules
provide fast com munication torque and speed
signals betw een the drives, for controlling the tension
in the paper eb.
The multidrive construction simplifies the total
installation and provides many advantages such as:
■ savings cabling, installation and maintenance costs
■ space savings
■ reduced com ponent count and increased reliability
■ reduced line currents and simpler braking arrange
ments
■ energy circulation over the common busbar, which
can used for motor-to-motor braking without the
need for braking chopper regenerative supply unit.
Where are multidrives used
Generally speaking, multidrives can used wherever
several drives form part single process. There are several
possibilities the supply side starting from simple
diode supply unit highly sophisticated active
IGBT supply units. The
com supply the multidrive enables the
implementation overall safety and control functions.
Multidrive promises
■ flexibility
■ com pact design
■ wide range options
■ adaptive programming
■ reduced installation costs
3AFE68248531 REV 20.
These two exam ples erely demonstrate the range
of applications here multidrives offer substantial
benefits over other types drive constructions
