Replacing Power Units - Siemens SINAMICS S120 Manual

Maintenance and servicing
7.5 Replacing components
Note
Correct replacement of filter mats
Make sure that no dirt falls into the cabinet!
If not observed, then the intended IP23/IP43 degree of protection will not be achieved!
When disposing of old filter mats, observe the applicable legal requirements!
7.5.4

Replacing power units

The components required for connecting the DC busbars to the power unit are supplied as
standard. If a components is replaced, you may have to restore these connections. The
connection procedure is described in the following section.
Preparatory steps:
● Disconnect the cabinet from the power supply (do not forget the external power supplies).
● Allow unimpeded access to the DC busbars
(if necessary, remove the protective covers during installation work)
Figure 7-5
216
Connection to the DC busbar on the Basic Line Module, Active Line Module and Motor
Module
Cabinet Modules liquid cooled
Manual, 10/2015, A5E37067587A