Siemens SINAMICS G List Manual page 217

Note: The selected pulse frequency (p1800) may be reduced if the drive converter has overload condition (refer to
p0290).
The following applies for vector drives (refer to p0107):
The pulse frequency can also be reduced when changing-over the modulator to an optimized pulse pattern. This is
used to avoid overdriving.
p1802[0...n] Modulator modes / Modulator modes
VECTOR Can be changed: T
Data type: Integer16
P-Group: Modulation
Min
0
Description: Sets the modulator mode.
Values: 0:
1:
2:
3:
4:
5:
6:
7:
8:
9:
Dependency: If a sinusoidal filter is parameterized as output filter (p0230 = 3, 4), then only space vector modulation without over-
control can be set as modulation type (p1802 = 3).
Refer to: p0230
Note: When modulation modes are enabled that could lead to overmodulation (p1802 = 0, 1, 2, 5, 6), the modulation
depth must be limited using p1803. The higher the overmodulation, the greater the current ripple and torque ripple.
p1803[0...n] Maximum modulation depth / Modulat depth max
VECTOR Can be changed: U, T
Data type: Floating Point
P-Group: Modulation
Min
20.0 [%]
Description: Defines the maximum modulation depth.
Note: p1803 = 100 % is the overcontrol limit for space vector modulation (or an ideal drive converter without any switching
delay).
If an optimized pulse pattern is enabled (edge modulation), then the modulation depth is limited to below the output
frequency of 28 Hz as there is no optimized pulse pattern in this range.
p1804[0...n] Filter time constant smoothed modulation index / T_filt mod_idxSmth
VECTOR Can be changed: U, T
Data type: Floating Point
P-Group: Modulation
Min
0.0 [ms]
Description: Filter time constant for the smoothed modulation index to change over the modulator mode.
 Siemens AG 2004 All Rights Reserved
SINAMICS G List Manual, Edition 12.2004
Automatic changeover SVM/FLB
Flat top modulation (FLB)
Space vector modulation (SVM)
SVM without overmodulation
SVM/FLB without overcontrol
SVM with pulse frequency reduction
SVM/FLB with pulse frequency reduction
Edge modulation from 100 Hz
Edge modulation from 60 Hz
Edge modulation from 28 Hz
Data set: DDS
Units group: -
Max
9
Data set: DDS
Units group: PERCENT
Max
150.0 [%]
Data set: DDS
Units group: TIME_M3
Max
10000.0 [ms]
Parameters
Parameter list
Access level: 3
Function diagram: -
Unit selection: -
Factory setting
0
Access level: 3
Function diagram: 6723
Unit selection: -
Factory setting
100.0 [%]
Access level: 4
Function diagram: -
Unit selection: -
Factory setting
10.0 [ms]
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