Speed Actual Value Filter - Siemens Sinamics S120 Function Manual

Vector control

4.12 Speed actual value filter

4.12 Speed actual value filter
Description
For vector control a speed actual value filter can be set. You can parameterize the speed
actual value filter as follows:
● Low-pass 2nd order (PT2): -40 dB/decade)
● Bandstop
● Low-pass with reduction
● General 2nd order filter
The STARTER commissioning tool converts band-stop and low-pass filters with reduction
into the parameters of the general 2nd order filter.
You activate speed actual value filter with p1656.4 = 1. You set the speed actual value filter
parameters with p1677 to p1681.
Note
For the vector control, there are 2 current setpoint filters and one speed actual value filter.
The speed actual value filter has been allocated the number "5".
Function diagrams (see SINAMICS S120/S150 List Manual)
● 1680 Overviews - Vector control, encoder evaluations (position, speed, temperature)
● 4715 Encoder evaluation - Actual speed value and pole position sensing, motor encoder
Overview of important parameters (see SINAMICS S120/S150 List Manual)
● p1655[0...4] CI: Speed actual value filter 5 natural frequency tuning
● p1656[0...n].4 speed actual value filter 5 activation
● p1677[0...n] speed actual value filter 5th type
● p1678[0...n] speed actual value filter 5 denominator natural frequency
● p1679[0...n] speed actual value filter 5 denominator damping
● p1680[0...n] speed actual value filter 5 numerator natural frequency
● p1681[0...n] speed actual value filter 5 numerator damping
172
ASM/SM (encoder1)
Function Manual, (FH1), 01/2012, 6SL3097-4AB00-0BP2
Drive functions