Siemens SINUMERIK 840D Description Of Functions page 105

02.99
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SINUMERIK 840D/SIMODRIVE 611 digital Descr. of Functions HLA Module (FBHLA) – 04.00 Edition
Amplitude log
10
frequency curve
3
0
–3
Absolute
–10
value
[dB]
–20
–30
Phase frequency
curve
180
90
Phase angle
[degrees]
0
–90
–180
Fig. 4-7 Band-stop behavior with bandwidth of 500 Hz, blocking frequency of 1000 Hz
and variation in numerator bandwidth (MD 5516) of 0, 150 and 250 Hz.
Amplitude log
10
frequency curve
3
0
–3
Absolute
value
–10
[dB]
–20
–30
Phase frequency
curve
180
90
Phase angle
[degrees]
0
–90
–180
Fig. 4-8 Frequency response of general band-stop at a blocking frequency of fz=1000
Hz, bandwidth fBn=500 Hz, numerator bandwidth fBz=0 Hz and variation in
natural frequency of (MD 5520) fn=70.7 %, 1000 % and 141.4 %
4 Firmware Drive Functions
4.3 Closed-loop velocity control
2
10
2
10
2
10
1414
707
2
10
250
150
0
3 log f [Hz]
10
150
250
0
3
log f [Hz]
10
1414
1000
707
3 log f [Hz]
10
1414
1000
707
3 log f [Hz]
10
4-105