Siemens SINUMERIK 840C Installation Instructions Manual page 1126

08.96
Example of speed setpoint bandstop
fz : Blocking frequency
DZ : Damping numerator
fbz = 2 x Dz x fz : Bandwidth numerator MD 1515/MD 1518
Dn : Damping denominator
fbn = 2 x Dz x fn : Bandwidth denominator
fn = MD 1520(%) x fz : Bandstop natural frequency
Magnitude
10
[dB]
3
0
-3
-10
-20
-30
180
Phase
angle
90
0
-90
-180
Fig. 12-9 Frequency response of general bandstop with blocking frequency f
bandwidth f
Bn
frequency f
n
© Siemens AG 1992 All Rights Reserved
SINUMERIK 840C (IA)
MD 1514/MD 1517
Amplitude response
2
10
log f [Hz]
Phase response
2
10
log f [Hz]
= 500 Hz, counter bandwidth f
= 707, 1000 and 1414 Hz.
6FC5197- AA50
12 Functional Descriptions
12.33.5 Speed setpoint filter
MD 1516/MD 1519
MD 1520/MD 1521
1414
707
3
10
1414
1000
1414
707
707
10 3
= 0 Hz and variation in natural
Bz
1000
= 1000 Hz,
z
12–351