Siemens SINAMICS S120 Manual page 220

Cabinet Modules
5.6 Chassis format Motor Modules
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.
Minimum cable lengths for parallel connection and connection to a motor with a single-winding
system
Note
Minimum cable lengths
The minimum cable lengths specified in the table below must be observed when two or more
Motor Modules are connected in parallel and there is a connection to a motor with a single-
winding system. The motor cables of Motor Modules connected in parallel may only be
connected with one another at the motor terminal box.
A motor reactor (option L08) must be used if the required cable length cannot be reached in
the application.
218
Figure 5-34 Motor with common winding system supplied by a parallel connection of S120 Motor
Modules
Cabinet Modules
Manual, 03/2013, A5E03263538A