Current Setpoint Filter Adaptation; Activating/Deactivating The Current Setpoint Filter Adaptation - Siemens SINAMICS S120 Function Manual

4.8.3

Current setpoint filter adaptation

4.8.3.1

Activating/deactivating the current setpoint filter adaptation

The "Current setpoint filter adaptation" function is used to automatically shift a selected
current setpoint filter to a mechanical resonance frequency.
The function is particularly recommended for systems that display a variable mechanical
resonance frequency during operation. If this system also contains non-variable mechanical
resonance frequencies, they must be suppressed via fixed current setpoint filters.
If the system only contains non-variable mechanical resonance frequencies, they must be
suppressed exclusively with fixed current setpoint filters. Instead of the current setpoint filter
adaptation, use the ""One button tuning" (Page 116)" for this.
Note
The "Current setpoint filter adaptation" function is activated for S120 drives together with the
"Moment of inertia estimator (Page 583)" function module.
Settings of the adaptive current setpoint filter
You can configure the activation and deactivation of the current setpoint filter adaptation via
parameter p5280.
The following settings are possible:
Setting
-1
0
1
Drive functions
Function Manual, 11/2017, 6SL3097-4AB00-0BP5
Explanation
The "Current setpoint filter adaptation" function is deactivated together with the as-
signed filter (see p5281).
With this setting, not only the adaptation, but also an assigned filter is deactivated. The
associated bit is automatically deleted in parameters p1656 and p5200. However, the
filter is not reset in its characteristic, it retains the values saved last. In contrast, the
adaptation parameter is automatically reset to 0.
The "Current setpoint filter adaptation" function is inactive.
The adaptation is deactivate with this setting. However, a filter assigned to the adapta-
tion can still be active. The filter function is not affected by this setting.
The "Current setpoint filter adaptation" function is permanently active.
A mechanical resonance frequency is determined with this activation and the appro-
priate blocking frequency is set automatically. If the bandstop filter has not been acti-
vated yet (see parameter p1656 or p5200), it is activated automatically.
While the function generator generates a signal with the "noise" signal shape
(p4820 = 4), the adaptation is temporarily inactive.
Servo control
4.8 Autotuning
127