Siemens SINUMERIK 840C User Manual
Page 543
7 Drive Machine Data (SIMODRIVE Drive MD)
04.96
7.3.2 Drive MD (data description)
Block frequency speed setpoint filter 1
1514
Default value
Lower input limit
Upper input limit
Units
3 500.0
1.0
7 999.0
Hz
Active
at once
Input of block frequency for speed setpoint filter 1 and parameterization as simple band-stop
filter. The filter is activated via machine data MD 1500 (number of setpoint filters) and MD
1501 (type speed setpoint filter). The machine data MD 1516/MD 1519 (bandwidth numerator
speed setpoint filter) and MD 1520/MD 1521 (band-stop filter natural frequency speed setpoint
filter) keep their default values.
Formula:
1+s · (2 ·
· fbz/(2 ·
· fz)
2
)+s
2
· 1/(2 ·
· fz)
2
H(s) = ––––––––––––––––––––––––––––––––––––––––––––––––
1+s · (2 ·
· fbn/(2 ·
· fn)
2
)+s
2
· 1/(2 ·
· fn)
2
Input:
fz
= MD 1514/1517
Blocking frequency speed setpoint 1/ speed setpoint 2 [Hz], (point
of resonance)
fbn
= MD 1515/1518
Bandwidth denominator filter 1/filter 2 [Hz]
fbz
= MD 1516/1519
Bandwidth numerator filter 1/filter 2 [Hz]
fn
= MD 1520/1521
Band-stop filter natural frequency filter 1/filter 2 [%] percentage with
reference to MD 1514 or MD 1517
MD 1520 (MD 1521)
fn =
–––––––––––––––––––· MD 1514 (MD 1517) [%]
100
Example:
20.0
dB
-60.0
5
Polynomial
4 k
Log Hz
180
Phase
Deg
-180
fz
= 900 Hz MD 1514/1517
fbn = 600 Hz MD 1515/1518
fbz = 0 Hz
MD 1516/1519
(Default value)
fn
= 100 %
MD 1520/1521
(Default value)
SYNTHESIS
5
4 k
Log Hz
Polynomial
SYNTHESIS
7–128
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Siemens AG 1992 All Rights Reserved 6FC5197- AA50
SINUMERIK 840C (IA)