Siemens SINAMICS S120 Function Manual page 119

Parameter Adjustment
range
p5308 0...30000 degrees
0...30000 mm
p5309 0 ms...5000 ms
Automatic pre-assignment
When the "One button tuning" function is activated, settings are made that should ensure the
safe and dynamic operation of the drive.
The mechanical drive train is measured with the aid of test signals. In this way, the controller
parameters can be calculated so that the drive train is set as dynamically as possible.
The test signals comprise, on the one hand, a noise excitation during which the drive
executes a motion with a superimposed noise signal for a few seconds. The following
settings are required for this:
● The speed controller gain is set with p5301.0 = 1.
Parameter p5292 is a multiplier for this gain. An amplitude reserve of 7 dB and 45° phase
margin is taken into account with p5292 = 100%.
● Current setpoint filters 2...4 are parameterized with p5301.1 = 1.
These filters are set in order to achieve greater gains in the speed control loop. Typically,
bandstop filters are applied to mechanical resonances. Filters are only set when a greater
speed controller gain p1460 can be achieved.
● Active oscillation damping is parameterized by setting p5301.5 to 1.
The frequency of the load oscillation detected is set in p3752 "Advanced positioning
control closed-loop controller pre-assignment for natural frequency of vibration". A
requirement for this is the function module "Advanced Positioning Control" (r0108.7 = 1)
and p3700.2 = 1. The load moment of inertia must also be determined using p5301.2 - or
first manually entered in p1498. Following this, Advanced Positioning Control must be
activated by setting p3700.0 to 1. An existing load oscillation can be dampened during
the positioning action using the oscillation damping control. Due to the spring moment
feedback, the synchronous operation could be worsened, which can have a negative
effect.
On the other hand, a very low frequency speed setpoint signal (triangular) is applied to the
drive. The motor makes a clearly visible movement. Distance amplitude and duration must
be set with parameters p5308 and p5309.
In this way, the moment of inertia of the drive train is estimated. All the remaining controller
parameters are set. The setting is performed in the same way as for "Online tuning".
Drive functions
Function Manual, 11/2017, 6SL3097-4AB00-0BP5
Factory Setting/display
setting
0 degree Distance limit for "One button tuning".
0 mm After activating the "One button tuning" (p5300), the traversing range
in the positive and negative directions is limited to the set distance
limit in degrees. A value of 360 degrees corresponds to one motor
revolution.
2000 ms Complete test signal (triangular).
Servo control
4.8 Autotuning
119