Active Line Connection Modules - Siemens SINAMICS S120 Manual
Cabinet modules liquid cooled
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Also See for SINAMICS S120:
- Function manual (1094 pages) ,
- Diagnostic manual (947 pages) ,
- Manual (848 pages)
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System overview
2.4 Line Connection Modules
Figure 2-3
2.4.3
Active Line Connection Modules
Active Line Connection Modules comprise a Line Connection Module, a liquid-cooled Active
Interface Module and a liquid-cooled Active Line Module installed in a cabinet system.
Active Line Connection Modules can supply energy to the DC link and return regenerative
energy to the line supply (energy recovery). The use of an additional Motor Module as
Braking Module is only required if the drives need to be decelerated in a controlled manner
after a power failure (i.e. when energy cannot be fed back into the line supply).
In contrast to Basic Line Connection Modules, Active Line Connection Modules generate a
regulated DC voltage which remains constant irrespective of fluctuations in the line voltage.
However, in this case, the line voltage must remain within the permissible tolerance range.
Active Line Connection Modules draw an almost sinusoidal current from the line supply.
Almost no harmonics occur. The total harmonic distortion factors of current THD(I) and
voltage THD(U) at the rated current are typically in the range of 3 %. THD(I) is calculated
according to IEEE 519 (2014) and THD(U) according to IEC 61000-2-4 (2002). The stringent
limit values of IEEE 519 (2014) are typically complied with.
Active Line Connection Modules always contain an Active Interface Module, which in
addition to a Clean Power Filter, also includes the necessary precharging circuit for the
Active Line Module.
Figure 2-4
28
Basic Line Connection Module >800 A
Active Line Connection Module with Active Interface Module and Active Line Module
≤800 A
Cabinet Modules liquid cooled
Equipment Manual, 04/2020, A5E37067587A
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