Siemens SINUMERIK 840D Description Of Functions page 102

4 Firmware Drive Functions
4.3 Closed-loop velocity control
5506
SPEED_FILTER_1_FREQUENCY [n]
PT2 natural frequency for velocity filter 1
Unit: Default:
Hz 2000.0
5507
SPEED_FILTER_1_DAMPING [n]
PT2 damping for velocity filter 1
Unit: Default:
– 0.7
4-102
SINUMERIK 840D/SIMODRIVE 611 digital Descr. of Functions HLA Module (FBHLA) – 04.00 Edition
0...7 index of the parameter set
Minimum: Maximum:
10.0 8000.0
0...7 index of the parameter set
Minimum: Maximum:
0.2 1.0
Setting the machine data to a value of < 10 Hz as the low-pass natural fre-
quency deactivates the filter.
Note
With reference to interpolating axes, please read Section 3.9.7.
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. 4-4 Low-pass filter (PT2) operation at natural frequency (MD 5506) of 1000 Hz and
variations in damping (MD 5507) of 0.2, 0.5 and 1.0
Relevant for:
HLA
Data type:
FLOAT
Relevant for:
HLA
Data type:
FLOAT
2
10
2
10
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02.99
Cross ref.: –
Protection level:
3/3
Effective:
Immediately
Cross ref.: –
Protection level:
3/3
Effective:
Immediately
0.2
0.5
1.0
3
log f [Hz]
10
Natural frequency
1.0
0.5
0.2
3
log f [Hz]
10