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Description:
Sets the drive converter switching frequency.
This parameter is pre-set to twice the rated converter value when the drive is first commissioned.
Dependency:
Minimum pulse frequency: p1800 >= 12 * p1082 * r0313 / 60
See also: p0230
Note
The maximum and minimum possible pulse frequency is also determined by the power unit being used (minimum pulse
frequency: 2 kHz or 4 kHz).
When the pulse frequency is increased, depending on the particular power unit, the maximum output current can be
reduced (derating, refer to r0067).
If a sine-wave filter is parameterized as output filter (p0230 = 3), then the pulse frequency cannot be set below the
minimum value required for the filter.
For operation with output reactors, the pulse frequency is limited to 4 kHz (see p0230).
If p1800 is changed during commissioning (p0010 > 0), then it is possible that the old value will no longer be able to be
set. The reason for this is that the dynamic limits of p1800 have been changed by a parameter that was set when the
drive was commissioned (e.g. p1082).
The pulse frequency cannot be changed when the motor data identification is activated.
r1801[0...1]
CO: Pulse frequency / Pulse frequency
Access level: 2
Can be changed: -
Unit group: -
Min:
- [kHz]
Description:
Display and connector output for the actual converter switching frequency.
Index:
[0] = Actual
[1] = Modulator minimum value
Note
The selected pulse frequency (p1800) may be reduced if the drive converter has an overload condition (p0290).
p1802[0...n]
Modulator mode / Modulator mode
Access level: 3
Can be changed: T
Unit group: -
Min:
0
Description:
Sets the modulator mode.
Value:
0:
2:
3:
4:
10:
Dependency:
If a sine-wave filter is parameterized as output filter (p0230 = 3, 4), then only space vector modulation without
overcontrol can be selected as modulation type (p1802 = 3). This does not apply to power units PM260.
p1802 = 10 can only be set for power units PM230 and PM240 and for r0204.15 = 0.
See also: p0230, p0500
Note
When modulation modes are enabled that could lead to overmodulation (p1802 = 0, 2, 10), the modulation depth must
be limited using p1803 (default, p1803 < 100 %). The higher the overmodulation, the greater the current ripple and
torque ripple.
When changing p1802[x], the values for all of the other existing indices are also changed.
SINAMICS G120X converter
Operating Instructions, 06/2019, FW V1.01, A5E44751209B AC
Automatic changeover SVM/FLB
Space vector modulation (SVM)
SVM without overcontrol
SVM/FLB without overcontrol
SVM/FLB with modulation depth reduction
Calculated: -
Scaling: p2000
Unit selection: -
Max:
- [kHz]
Calculated:
CALC_MOD_LIM_REF
Scaling: -
Unit selection: -
Max:
10
Parameters
7.2 Parameter list
Data type: FloatingPoint32
Dynamic index: -
Function diagram: -
Factory setting:
- [kHz]
Data type: Integer16
Dynamic index: DDS, p0180
Function diagram: -
Factory setting:
0
711
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