Siemens SINAMICS S120 - Speed Actual Value Filter

Vector control
5.11 Speed actual value filter
Drive functions
246 Function Manual, 11/2017, 6SL3097-4AB00-0BP5
5.11
Speed actual value filter
For vector control, an actual speed value filter can be set. You can parameterize the actual
speed value filter as follows:
● 2nd order lowpass (PT2: -40 dB/decade)
● General filter 2nd order
You activate the actual speed value filter with p1656.4 = 1. You set the speed actual value
filter parameters with p1677 to p1681.
As long as the parameter setting p1699 = 1 is active, the background calculation of the filter
data is not performed, even when filter parameters are changed. Only with parameter setting
p1699 = 0, is the calculation performed.
Note
For the vector control, there are two
current setpoint filters and one actual speed value filter.
The actual speed value filter has been allocated the number "5".
Function diagrams (see SINAMICS S120/S150 List Manual)
•
4702
Encoder evaluation
- vector control, overview
•
4715
Encoder evalua
tion - speed actual value and pole position sensing, encod-
er1, n_act_filter5
Overview of important parameters (see SINAMICS S120/S150 List Manual)
•
p1655[0...4]
CI: Current setpoint filter / actual speed value filter natural frequency
tuning
•
p1656[0...n]
Current setpoint filter / actual speed value filter activation
•
p1677[0...n]
Actual speed value filter 5 type
•
p1678[0...n]
Actual speed value filter 5 denominator natural frequency
•
p1679[0...n]
Actual speed value filter 5 denominator damping
•
p1680[0...n]
Actual speed value filter 5 numerator natural frequency
•
p1681[0...n]
Actual speed value filter 5 numerator damping
•
p1699
Filter data acceptance