Siemens Sinumerik 840D Series Function Manual

10.03
4.3 Closed-loop velocity control
4-104
 Siemens AG, 2003. All rights reserved
SINUMERIK 840D/SIMODRIVE 611 digital, HLA Module (FBHLA) - 10.03 Edition
150
250
0
0
150
250
Absolute
value
[dB]
log f [Hz]
10
2
10
3
Phase frequency
curve
Phase angle
[degrees]
log f [Hz]
10
2
10
3
-20
-30
-10
-3
0
3
10
-90
-180
0
90
180
Amplitude log
frequency curve
Fig. 4-8 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.
1000
707
1414
707
1414
707
1414
1000
Amplitude log
frequency curve
Absolute
value
[dB]
log f [Hz]
10
2
10
3
Phase frequency
curve
Phase angle
[degrees]
log f [Hz]
10
2
10
3
-20
-30
-10
-3
0
3
10
-90
-180
0
90
180
Fig. 4-9 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
02.99

Siemens Sinumerik 840D Series Specifications

General

Axes	Up to 31 axes
Power Supply	24 V DC
Control Type	CNC
Interface	Ethernet, PROFIBUS
Display	TFT color display
PLC	Integrated PLC (programmable logic controller)
Operating Temperature	0°C to 45°C
Relative Humidity	Up to 95% (non-condensing)
Max. Number of Channels	Up to 10 channels