Siemens SINAMICS V90 Operating Instructions Manual page 252

Tuning
9.3 One-button auto tuning
Parameter settings
You can set the ratio of machine load moment of inertia (p29022) with the following methods:
● Enter it manually if you have known the ratio of machine load moment of inertia.
● Estimate the ratio of manchine load moment of inertia with one-button auto tuning
(p29023.2 = 1). When you have executed the one-button tuning many times and obtained
a stable value of p29022, you can stop estimating it by setting p29023.2 = 0.
Parame-
ter
p29020[
0...1]
p29021
p29022
p29023
p29025
p29026
p29027
p29028
Parameter p29028 is available when the multi-axis interpolation function is activated
(p29023.7 = 1). If the axes are used as the interpolation axes, you need to set the same pre-
control time constants (p29028) for them. After tuning is completed, you need to manually
set the same position loop gains (p29110 [0]) for them if the tuning results are different.
You can configure the dynamic factor of the servo system with the parameter p29020.
Higher dynamic factor means higher tracking ability and shorter settling time but also higher
possibility of resonance. You should find a desired dynamic factor within a resonance-free
range.
35 dynamic factors are available for the SINAMICS V90 servo drive:
252
Value Default Unit
range value
1 to 35 18 -
0 to 5 0 -
1 to 1 -
10000
0 to 0xffff 0x0007 -
0 to 0x0004 -
0x003f
0 to 5000 2000 ms
(default)
0 to 3000 0 (de- °
fault)
0.0 to 7.5 ms
60.0
Dynamic factor (p29020)
1
2
...
17
18
Description
The dynamic factor of auto tuning
[0]: dynamic factor for one-button auto tuning
•
[1]: dynamic factor for real-time auto tuning
•
Selection of a tuning mode
0: disabled
•
1: one-button auto tuning
•
3: real-time auto tuning
•
5: disabled with default control parameters
•
Ratio of load moment of inertia
One-button auto tuning configuration
Overall tuning configuration
Test signal duration
Limit rotation position of the motor
Pre-control time constant
Operating Instructions, 09/2015, A5E36037884
Machine rigidity
Low
↑
Middle
SINAMICS V90, SIMOTICS S-1FL6