Descriptions of functions
10.28 Connecting units in parallel and in series
SINAMICS DCM DC Converter
Operating Instructions, 12/2018, A5E34763375A
613
The following parameters should be specifically set for operation with this converter
topology:
Table 10- 72 Parameter assignment, 6-pulse series connection
The same as at the master
p51800 Position in the topology 31 (Master) 32 (slave)
33 (parallel to the master)
34 (parallel to the slave)
p51802 Minimum number of nodes Number of SINAMICS DCM units
Number of SINAMICS DCM units
1)
1)
Reduction in rated unit DC current
The same as at the master
Rated value for supply voltage
The same as at the master
The same as at the master
2)
The same as at the master
2)
The same as at the master
Motor thermal time constant
Motor thermal time constant in s
The same as at the master
p50140 Motor I
2
t monitoring, response
Application-specific The same as at the master
2)
The same as at the master
= 1 at the two outermost units (= at the physical ends of the bus line)
= 0 on all of the other units
The optimization run for current controller and precontrol (p50051 = 23 or 25) sets the correct values for these