Siemens SINUMERIK 840C Installation Instructions Manual page 518

09.95
3rd filter
4th filter
Note:
Before the filter type is configured, the appropriate filter machine data must be input.
1202
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 (No. current setpoint filters) and MD 1201 (Type current setpoint filter).
Notes:
• 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 f
of the controller.
1203
Input of damping for current setpoint filter 1 (PT2 low-pass). The filter is activated via machine
data MD 1200 (No. current setpoint filters) and MD 1201 (Type current setpoint filter).
0.7 ˆ = 70%
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.
1204
Input of natural frequency for current setpoint filter 2 (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 (No. current setpoint filters) and MD 1201 (Type current setpoint filter).
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SINUMERIK 840C (IA)
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Bit 2
Bit 3
Natural frequency current setpoint filter 1
Default value Lower input limit
2 000.0
Damping current setpoint filter 1
Default value Lower input limit
0.7
1 ˆ = 100%
Natural frequency current setpoint filter 2
Default value Lower input limit
0.0
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7 Drive Machine Data (SIMODRIVE Drive MD)
0 Low-pass (see MD 1206/1207)
1 Band-stop (see MD 1216/1217/1218)
0 Low-pass (see MD 1208/1209)
1 Band-stop (see MD 1219/1220/1221)
Upper input limit
0.0 8 000.0
= 3000 Hz to achieve an optimum dynamic response
o
Upper input limit
0.05 5.0
Upper input limit
0.0 8 000.0
6FC5197- AA50
7.3.2 Drive MD (data description)
Active
at once
Units
Hz
Active
at once
Units
–
Active
at once
Units
Hz
7–103