Siemens SINUMERIK 840C - Manual (Page 457)

7 Drive Machine Data (SIMODRIVE Drive MD) 12.93
7.1.2 MSD MD (data description - SW 3)
Hysteresis MD 274 motor 2 275
Default value Lower input limit Upper input limit Units
50 0 Rated speed rev/min
Active
at once
Input of hysteresis for the cut-in speed set in machine data MD 274.
Frequency torque setpoint filter motor 2 276
Default value Lower input limit Upper input limit Units
300 50 450 Hz
Active
at once
Input of filter frequency. The 3dB transition frequency for the low-pass filter or the mid-
frequency for the bandstop is specified here (see MD 280) for the digital filter in the torque
setpoint channel.
Grading torque setpoint filter motor 2 277
Default value Lower input limit Upper input limit Units
1.00 0.10 10.00 –
Active
at once
Input of filter quality for the bandstop in the torque setpoint channel (see MD 280).
1.00: Basis quality=1
Correction P-gain current controller motor 2 278
Default value Lower input limit Upper input limit Units
0 -255 255 –
Active
at once
The current controller P-gain, which is calculated according to the motor, converter and
converter switching frequency, can be corrected by an offset in this machine data. A positive
value in MD 278 results in a higher gain and a negative value in a lower gain than the gain
value calculated. The total gain obtained by adding the calculated value and the correction in
MD 278 is displayed in MD 316.
Selection torque setpoint filter motor 2 280
Default value Lower input limit Upper input limit Units
0000 0000 0001 Hex
Active
at once
The digital filter is activated and deactivated in this machine data. A digital filter can be
implemented in the torque setpoint channel with machine data MD 276, MD 277 and MD 280.
0: Digital filter deactivated
1: Digital filter activated
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SINUMERIK 840C (IA)