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DC link components
7.1
Description
DC link components are installed in addition to the Line Modules and Motor Modules. They are
connected to other components via the DC link.
Additional information on the DC link components is provided in Chapter "DC link components"
of the SINAMICS S120 Equipment Manual Booksize Power Units
support.industry.siemens.com/cs/ww/en/view/109781351).
Component
Braking Modules or
Braking Modules Compact
Capacitor Module
Control Supply Module
SITOP PSU400M
Booksize power units
Equipment Manual, 01/2022, 6SL3097-6AC30-0BP0
Function
Stopping the drives in the event of a power failure and limiting the DC link
voltage
Increases the DC link capacitance to buffer brief line supply failures.
Generates a 24 V DC output voltage for the other components in the
drive lineup.
The Control Supply Module requires its own dedicated AC supply when
starting.
Generates a 24 V DC output voltage for the other components in the
drive lineup from the DC link.
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