Tuning
9.3 One-button auto tuning
SINAMICS V90, SIMOTICS S-1FL6
318 Operating Instructions, 04/2019, A5E36037884-007
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 machine 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.
p29020[0...1] 1 to 35 18 - The dynamic factor of auto tuning
• [0]: dynamic factor for one-button auto
tuning
• [1]: dynamic factor for real-time auto
tuning
p29021 0 to 5 0 - Selection of a tuning mode
• 0: disabled
• 1: one-button auto tuning
• 3: real-time auto tuning
• 5: disabled with default control parame-
ters
Ratio of load moment of inertia
One-button auto tuning configuration
Overall tuning configuration
Limit rotation position of the motor
Pre-control time constant
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.
A total of 35 dynamic factors are available for the SINAMICS V90 servo drive:
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