04.96 7 Drive Machine Data (SIMODRIVE Drive MD)
7.2.2 FDD MD (data description - SW 3)
Type current setpoint filter
1201
Default value Lower input limit Upper input limit Units
Low-pass Low-pass Band-stop –
Active
at once
Input of configuration of 4 current setpoint filters. Band-stop and low-pass filters are available.
The adjustable filter parameters are entered in the appropriate machine data.
1st filter Bit 0 0
1
Low-pass (see MD 1202/1203)
Band-stop (see MD 1210/1211)
2nd filter Bit 1 0
1
Low-pass (see MD 1204/1205)
Band-stop (see MD 1213/1214)
3rd filter Bit 2 0
1
Low-pass (see MD 1206/1207)
Band-stop (see MD 1216/1217)
4th filter Bit 3 0
1
Low-pass (see MD 1208/1209)
Band-stop (see MD 1219/1220)
Note:
Before the filter type is configured, the appropriate filter machine data must be input.
Natural frequency current setpoint filter 1
1202
Default value Lower input limit Upper input limit Units
2 000 0 8 000 Hz
Active
at once
Input of natural frequency for current setpoint filter 1 (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.
Note:
Current setpoint filter 1 is preset to the current controller sampling time MD 1000 = 125 µs for
damping of the encoder torsional natural frequency.
For a current controller sampling time of MD 1000 = 62.5 µs, we recommend that the natural
frequency be changed to fo = 3000 Hz to achieve an optimum dynamic response of the
controller.
Damping current setpoint filter 1
1203
Default value Lower input limit Upper input limit Units
0.7 0.05 5 –
Active
at once
Input of damping for current setpoint filter 1 (PT2 low-pass). The filter is activated via machine
data MD 1200 and MD 1201. 0.7
ˆ=
70 % 1
ˆ=
100 %
© Siemens AG 1992 All Rights Reserved 6FC5197- AA50 7–57
SINUMERIK 840C (IA)