Siemens SINUMERIK 840C - Manual (Page 518)

09.95 7 Drive Machine Data (SIMODRIVE Drive MD)
7.3.2 Drive MD (data description)
3rd filter Bit 2
0
1
Low-pass (see MD 1206/1207)
Band-stop (see MD 1216/1217/1218)
4th filter Bit 3
0
1
Low-pass (see MD 1208/1209)
Band-stop (see MD 1219/1220/1221)
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 0.0 8 000.0 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 (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
µ s for damping of the encoder torsional natural frequency.
• For a current controller sampling time of MD 1000 = 62.5 µ s, we recommend that the
natural frequency be changed to f
o
= 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 5.0 –
Active
at once
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% 1 ˆ = 100%
Note:
• Current setpoint filter 1 is preset to the current controller sampling time MD 1000 =
125
µ s for damping of the encoder torsional natural frequency.
Natural frequency current setpoint filter 2 1204
Default value Lower input limit Upper input limit Units
0.0 0.0 8 000.0 Hz
Active
at once
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).
© Siemens AG 1992 All Rights Reserved 6FC5197- AA50 7–103
SINUMERIK 840C (IA)