sinamics g120 - Meyer Industrie Electronic

■ Overview
The regenerative feedback capability of the PM250 Power Module
in generating mode (electronic braking) means that energy
is returned to the supply system and not destroyed in a braking
resistor. This saves space in the control cabinet, time-consuming
dimensioning of the braking resistor as well as the wiring. Generated
heat is also reduced in the control cabinet.
An innovative circuit design reduces supply harmonics. There is
no need to use an optional line reactor at the supply infeed. This
saves space and costs for engineering and procurement.
The PM250 Power Module is also designed for safety-sensitive
applications. In conjunction with a Safety Control Unit, the drive
can be turned into a Safety Integrated Drive (see Control Units).
© Siemens AG 2007
SINAMICS G120
Inverter chassis units 0.37 kW to 90 kW
PM250 Power Modules
The permissible cable lengths between inverter and motor are
limited depending on cable type. Longer cables can be used if
output reactors are connected (see load-side power components).
For frame size FSC of Power Module PM250 with an integral line
filter of class A, an additional base filter of class B is available for
achieving class B (see line-side power components).
The PM250 Power Modules with integrated line filter to class A
are suitable only for connection to TN supply systems.
Siemens D 11.1 · 2007
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