Operating Instructions

SINAMICS G120 CU230P-2 Control Units
List Manual, 04/2018, A5E33838102
247
2 Parameters
2.2 List of parameters
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
Refer to: 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.
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).
Description: Sets the modulator mode.
Value: 0: Automatic changeover SVM/FLB
2: Space vector modulation (SVM)
3: SVM without overcontrol
4: SVM/FLB without overcontrol
10: SVM/FLB with modulation depth reduction
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.
Refer to: 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 = 98%). The higher the overmodulation, the greater the current ripple
and torque ripple. With p1802 = 10, the modulation depth limit is automatically reduced to 100% in the critical output
frequency range (over approx. 57 Hz).
When changing p1802[x], the values for all of the other existing indices are also changed.
p1800[0...n] Pulse frequency setpoint / Pulse freq setp
PM330 Access level: 2 Calculated: - Data type: FloatingPoint32
Can be changed: U, T Scaling: - Dyn. index: DDS, p0180
Unit group: - Unit selection: - Func. diagram: 8021
Min Max Factory setting
0.500 [kHz] 4.000 [kHz] 4.000 [kHz]
r1801[0...1] CO: Pulse frequency / Pulse frequency
Access level: 2 Calculated: - Data type: FloatingPoint32
Can be changed: - Scaling: p2000 Dyn. index: -
Unit group: - Unit selection: - Func. diagram: -
Min Max Factory setting
- [kHz] - [kHz] - [kHz]
p1802[0...n] Modulator mode / Modulator mode
PM230 Access level: 3 Calculated: p0340 = 1,3,5 Data type: Integer16
Can be changed: T Scaling: - Dyn. index: DDS, p0180
Unit group: - Unit selection: - Func. diagram: -
Min Max Factory setting
0 10 10