Advanced Settings - Siemens SINAMICS G120 Operating Instructions Manual

8.5.2.4

Advanced settings

K - and T adaptation
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The K
commissioning, the inverter optimizes its control using the "rotating measurement" function.
If you have performed the rotating measurement, then the K
set.
You can find additional information in the List Manual, function block diagram 6050.
Droop
The droop function reduces the speed setpoint as a function of the torque setpoint.
Figure 8-22
The droop function ensures even torque distribution between two or more mechanically
coupled drives. Load distribution using the droop function also masters soft mechanical
couplings or a permanent speed difference as a result of slip.
Preconditions for using the droop function
● All coupled drives must be operated in vector control and closed-loop speed control, with
● Only a one common ramp-function generator may be used for mechanically coupled
Par.
r1482
p1488
p1489
r1490
p1492
You can find additional information in the List Manual, function block diagram 6030.
Converter with the CU250S-2 Control Unit (vector)
Operating Instructions, 06/2013, FW V4.6, A5E31759476B AB
- and T adaptation suppresses possible speed control oscillations. During basic
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Effect of droop in the speed control
or without an encoder.
drives.
Explanation
Speed controller I torque output
Droop input source (factory setting: 0)
0: Droop feedback not connected
1: Droop from the torque setpoint
2: Droop from the speed control output
3: Droop from the integral output, speed controller
Droop feedback scaling (factory setting: 0.05)
A value of 0.05 means: At the rated motor torque, the inverter reduces the speed by 5% of
the rated motor speed.
Droop feedback speed reduction
Droop feedback enable (factory setting: 0)
Setting functions
8.5 Motor control
- and T adaptation has been
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253