Siemens SINUMERIK 840C Installation Instructions Manual page 547

7 Drive Machine Data (SIMODRIVE Drive MD)
7.3.2 Drive MD (data description)
Note:
When 0 is entered for the bandwidth, the filter is parameterized as a proportional element with
a gain of 1.
1519
Numerator bandwidth speed setpoint f. 2
Default value
0.0
The description of this machine data is the same as that for machine data MD 1516!
1520
Band-stop filter natural frequency speed setpoint f. 1
Default value
100
Input of the band-stop filter natural frequency for raising or lowering the amplitude response
after the blocking frequency (MD 1514/1517).
The machine data (MD 1520/MD 1521) are used to match different axis dynamic responses to
a standard dynamic response (low-pass filter). The standard dynamic response is based on
that of the axis with the lowest resonant frequency.
Formula:
2 2
1+s · (2 · · fbz/(2 · · fz) )+s · (1/(2 · · fz)
––––––––––––––––––––––––––––––––––––––––––––––––– ––––––––––––––––––––––––––––––––––––––––––––
2 2
1+s · (2 · · fbn/(2 · · fn) )+s · (1/(2 · · fn)
Input:
fz : Blocking frequency
Dz : Damping numerator
fbz = 2 · Dz · fz : Bandwidth numerator
Dn : Damping denominator
fbn = 2 · Dn · fn : Bandwidth denominator
fn=MD 1520[%]·fz : Band-stop filter natural
frequency
7–132
Lower input limit Upper input limit
0.0
Lower input limit Upper input limit
1
2
) 1 + s · (2 · Dz/2 · · fz) + s
2
) 1 + s · (2 · Dn/2 · · fn) + s
MD 1514/1517
MD 1515/1518
MD 1516/1519
MD 1520/1521 (default value)
©
Siemens AG 1992 All Rights Reserved
Units
7 999.0
Units
141
2 2
· 1/(2 · · fz)
2 2
· 1/(2 · · fn)
6FC5197- AA50
SINUMERIK 840C (IA)
09.95
Active
at once
Hz
Active
at once
%