Siemens SINAMICS S120 - Page 287

Maintenance and servicing
6.4 Replacing components
Cabinet Modules NEMA
Manual, 04/2014, A5E03586450A
287
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 Con
trol Interface
Module and a power unit with Control Interface Board is not possible.