Active Line Modules - Siemens SINAMICS S120 Device Manual

System overview
2.4 Line Modules
Figure 2-5
Figure 2-6
Figure 2-7
2.4.4

Active Line Modules

Active Line Modules can supply energy to the DC link and return regenerative energy to the
line supply. A Braking Module and braking resistor are required only if the drives need to be
decelerated in a controlled manner after a power failure (i.e. when energy cannot be fed
back to the supply).
In contrast to Basic Line Modules and Smart Line Modules, Active Line Modules generate a
regulated DC voltage, which remains constant despite fluctuations in the line voltage.
However, in this case, the line voltage must remain within the permissible tolerance range.
Active Line Modules draw a virtually sinusoidal current from the line supply, and do not
cause any harmful harmonics.
30
Line Connection Module with Smart Line Module ≤ 800 A
Line Connection Module with Smart Line Module > 800 A
Line Connection Module with Smart Line Modules connected in parallel
Cabinet Modules NEMA
Manual, 04/2014, A5E03586450A