Switchover of the power unit topology - option S50
12-pulse applications
Compact User Manual, 09/2015, A5E34871844H
45
The two power unit topologies generally require certain parameters, e.g., p50100 (rated
motor current), p50110 (armature circuit resistance), p50111 (armature circuit inductance),
controller gains, etc., to be set in accordance with the topology.
To do this, the drive data sets (DDS) must be used:
The BICO output for controlling the contactors (r53312.0) must be used as the DDS
selection signal (p50820).
The optimization runs or the manual optimization for both power unit topologies must then be
carried out separately and the determined values entered in index 0 or index 1 of the
appropriate controller parameters.
Recommended procedure:
1. Carry out the optimization of power unit topology 1 in DDS 0 in full
2. Copy DDS 0 to DDS 1 (see p0819)
3. Carry out the optimization of power unit topology 2 in DDS 1
Note
A change to the selection of power unit topology during an optimization run leads to the
cance
lation of the optimization run with fault message F60052.
The following properties or states are monitored and in the event of an error result in fault
message F60044:
● If power unit topology 2 is selected,
– option S50 must be available
– the master function must be set on the same SINAMICS DCM as for power unit
topology 1
– no "n+m" mode may be set (i.e., p51803 must = 0)
● The feedback signal must - except during a switchover of the topology - always match the
selection signal.
● The maximum duration of the topology switchover may not exceed the assigned time.
Note
If fault message F60044 resulting from a change in the fault reaction (see p02100/p02101)
or in the message type (see p02118/p02119) does not lead to the Fault operating state
SINAMICS DCM remains in operating state o1.8 in the event of a fault.
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