Replacing The Control Unit - Siemens SINAMICS S120 Device Manual

Maintenance and servicing
6.4 Replacing components
Note
Mixed operation is not possible
It is only possible to connect identical power units in parallel if both power units have the
same hardware version. Mixed operation between a power unit with Control Interface
Module and a power unit with Control Interface Board is not possible.
6.4.9

Replacing the Control Unit

The Control Unit is mounted on a slide-in unit that can be pulled out by removing a screw on
the top left
Figure 6-15
Preparatory steps
● Disconnect the cabinet from the power supply (do not forget the external power supplies).
● Remove the protective cover.
● Allow unimpeded access.
290
①
if the Control Unit needs to be replaced.
Replacing the Control Unit
Cabinet Modules NEMA
Manual, 04/2014, A5E03586450A