Line Modules Booksize
4.3 Active Line Modules with internal air cooling
Booksize Power Units
154 Manual, (GH2), 07/2016, 6SL3097-4AC00-0BP8
Active Line Modules with internal air cooling
4.3.1
Active Line Modules generate a constant, regulated DC voltage in the DC link from the 3-
phase line supply voltage that supplies the connected Motor Modules with power.
This ensures that they are not influenced by line voltage fluctuations.
When motors brake, Active Line Modules feed energy back into the line supply. The
regenerative feedback capability of the modules can be deactivated by parameterization.
The DC link starts precharging as soon as the line voltage is applied and is independent of
its phase sequence direction. Load can be applied to the DC link after the module has been
enabled.
A line contactor can be installed on the line side if the system has to be electrically isolated
from the line supply.
Active Line Modules can be directly connected to TN, IT and TT systems. The Line Modules
have an integrated overvoltage protection function.
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