Siemens SINUMERIK 840C - Manual (Page 474)

04.96 7 Drive Machine Data (SIMODRIVE Drive MD)
7.2.2 FDD MD (data description - SW 3)
Natural frequency current setpoint filter 4 1208
Default value Lower input limit Upper input limit Units
0 0 8 000 Hz
Active
at once
Input of natural frequency for current setpoint filter 4 (PT2 low-pass). An entry of < 10 Hz as
the natural frequency of the low-pass filter initializes the filter as a proportional element with a
gain of 1 independently of the associated damping. The filter is activated via machine data MD
1200 and MD 1201.
Damping current setpoint filter 4 1209
Default value Lower input limit Upper input limit Units
1.0 0.05 5 –
Active
at once
Input of damping for current setpoint filter 4 (PT2 low-pass). The filter is activated via machine
data MD 1200 (selection current setpoint filter) and MD (type current setpoint filter) 1201.
Block frequency current setpoint filter 1 1210
Default value Lower input limit Upper input limit Units
3 500.0 1 7 999.0 Hz
Active
at once
Input of block frequency for current setpoint filter 1 (band-stop). When block frequencies of <
10 Hz are input, the filter is deactivated (proportional element with a gain of 1). The filter is
activated via machine data MD 1200 and MD 1201.
Note:
The maximum block frequency input value is limited by the sampling frequency of the control
(MD 1000) (parameterization error).
1 1
MD 1210 < –––––––– = –––––––––
2 x MD 1000 2 x T
sampl.
MD 1000 = T
sampl.
=
62.5 µ s
125.0 µ s
=> MD 1210 <
8000 Hz
4000 Hz
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SINUMERIK 840C (IA)