Siemens SINUMERIK 840C - Page 547

7 Drive Machine Data (SIMODRIVE Drive MD) 09.95
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.
Numerator bandwidth speed setpoint f. 2
1519
Default value Lower input limit Upper input limit Units
0.0 0.0 7 999.0 Hz
Active
at once
The description of this machine data is the same as that for machine data MD 1516!
Band-stop filter natural frequency speed setpoint f. 1
1520
Default value Lower input limit Upper input limit Units
100 1 141 %
Active
at once
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:
1+s · (2 · · fbz/(2 · · fz)
2
)+s
2
· (1/(2 · · fz)
2
) 1 + s · (2 · Dz/2 · · fz) + s
2
· 1/(2 · · fz)
2
––––––––––––––––––––––––––––––––––––––––––––––––– ––––––––––––––––––––––––––––––––––––––––––––
1+s · (2 · · fbn/(2 · · fn)
2
)+s
2
· (1/(2 · · fn)
2
) 1 + s · (2 · Dn/2 · · fn) + s
2
· 1/(2 · · fn)
2
Input:
fz : Blocking frequency MD 1514/1517
Dz : Damping numerator
fbz = 2 · Dz · fz : Bandwidth numerator MD 1515/1518
Dn : Damping denominator
fbn = 2 · Dn · fn : Bandwidth denominator MD 1516/1519
fn=MD 1520[%]·fz : Band-stop filter natural
frequency MD 1520/1521 (default value)
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SINUMERIK 840C (IA)