Siemens SINAMICS DCM Operating Instructions Manual page 454

Descriptions of functions
10.25 Connecting units in parallel and in series
 The speed setpoint and the speed actual value should be entered at the master
 The optimization runs should be started at the master converter. The slave converters
Miscellaneous
NOTICE
For a slave converter the i
because for a non-symmetrical current, this would then respond at the slave.
452
As long as the master does not receive a switch-on command, the slaves stay in
operating state o10.0 (wait for switch-on from the master).
If the master receives a switch-on command, then it automatically transfers this to the
slaves. Then, all units carry out their switch-on sequence, i.e. they attempt to go into
operating state o0. However, the master waits in operating state o1.7 until all slaves
have reached operating state o0 (exception: n+m operation for a 6-pulse parallel
connection)
If a slave leaves operating state o0, then the master outputs fault message F60044
(exception: n+m operation for a 6-pulse parallel connection)
converter.
must be connected and ready for operation at this point.
t monitoring of the motor should be deactivated (p50114=0),
2
Operating Instructions, 1.2012, C98130-A7066-A1-05-7619
SINAMICS DCM DC Converter