Application Guide | iC2-Micro Frequency Converters
P 2.4.5 Over Modulation
Use the parameter to enable or disable overmodulation of the output voltage. Select [1] On to obtain extra DC-link voltage and torque
on the motor shaft. Select [0] Off to avoid torque ripple on the motor shaft.
Default value: 1 [On] Parameter type: Selection
Parameter
number:
1403 Unit: –
Data type: enum Access type: Read/Write
Following are the selections for the parameter:
Selection number Selection name Selection description
0 Off To avoid torque ripple on the motor shaft, select [0] Off for no
overmodulation of the output voltage. This feature may be useful
for applications such as grinding machines.
1 On Select [1] On to enable the overmodulation function for the
output voltage. Select this setting when it is required that the
output voltage is >95% of the input voltage (typical when
running oversynchronously). The output voltage is increased
according to the degree of overmodulation.
NOTICE
Overmodulation leads to increased torque ripple as
harmonics are increased.
7.3.4 DC-Link Control (Menu Index 2.5)
P 2.5.1 Damping Gain Factor
Damping factor for DC link voltage compensation. See P 2.5.2 DC-Link Voltage Compensation.
Default value: Size Related Parameter type: Range (0–100)
Parameter
number:
1408 Unit: %
Data type: uint8 Access type: Read/Write
P 2.5.2 DC-Link Voltage Compensation
Enable DC-link compensation to reduce ripple in the DC-link voltage (recommended for most applications).
Default value: Size Related Parameter type: Selection
Parameter
number:
1451 Unit: –
Data type: enum Access type: Read/Write
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