Siemens SINAMICS Series, Operating Instructions Manual

Page: 610 / 758

Descriptions of functions
10.28 Connecting units in parallel and in series
SINAMICS DCM DC Converter
608
Operating Instructions, 12/2018, A5E34763375A
Table 10- 71 6-pulse parallel connection n+m operation
Parameter Master Substitute master Slave
p51799 Operating principle 0 The same as at the
master
The same as at the
master
p51800 Position in the topology 11 (Master) 13 (Substitute master) 12 (Slave)
p51801 Number of send data Any Any Any
p51802 Minimum number of nodes n The same as at the
master
The same as at the
master
p51812 Total number of nodes n+m The same as at the
master
The same as at the
master
p51803 n+m mode 1 (only armature)
2 (ar field)
The same as at the
master
0
p51804[..] Transmit data Any Any Any
p51805 Bus terminator 0 or 1
1)
0 or 1
1)
0 or 1
1)
p51806 Station address Unique address Unique address Unique address
p51807 Telegram failure time 0.1 s 0.1 s 0.1 s
p50082 Field operating mode ≠ 0 0 (if only armature)
≠ 0 (if ar field)
0 (no field)
p50076[..] Reduction in rated unit DC
current
- The same as at the
master
The same as at the
master
p50078[..] Rated value for supply
voltage
- The same as at the
master
The same as at the
master
p50100 Rated motor current Rated motor
current/number of
SINAMICS DCM
The same as at the
master
The same as at the
master
p50110 Armature resistance Ra
2)
Actual armature
resistance × number of
SINAMICS DCM
The same as at the
master
The same as at the
master
p50111 Armature inductance La
2)
Actual armature
inductance × number of
SINAMICS DCM
The same as at the
master
The same as at the
master
p50114 Motor thermal time
constant
Motor thermal time
constant in s
The same as at the
master
The same as at the
master
p50140 Motor I
2
t monitoring,
response when starting
Application-specific The same as at the
master
The same as at the
master
p50115 to
p50139
Field characteristic - The same as at the
master
(only if n+ m operation for
ar field)
The same as at the
master
p51591 La reduction factor
2)
- The same as at the
master
The same as at the
master
p50357 Threshold for interrupted
tachometer
Application-specific The same as at the
master
100% (tachometer
interruption monitoring
not active)
1)
= 1 at the two outermost units (= at the physical ends of the bus line)
= 0 on all of the other units
2) The optimization run for current controller and precontrol (p50051 = 23 or 25) sets the correct values for these
parameters.