EM12 User’s Manual
5. Description of Function Codes
103
d2-14 indicates the time required for the output voltage to rise from 0 V to the rated motor voltage shown as t1 in
the following figure.
Diagram 5-33 Voltage of V/F separation
5.22 Group d3 to d5: Relevant parameters of motor 2
EM12 series support the switchover of two groups of motor parameters, and the two motors can separately set the
motor nameplate parameters, motor auto-tuning parameters, V/F control or vector control mode, the related
parameters of encoder and the related performance parameters of V/F control or vector control mode.
For the setting of motor 2, please refer to the relevant description of motor1 parameters.
5.23 Group d6: Control Optimization Parameters
d6-00
Carrier frequency
Default
Model dependent
Setting Range
0.5kHz~16.0 kHz
It is used to adjust the carrier frequency of the frequency inverter, helping to reduce the motor noise, avoiding the
resonance of the mechanical system, and reducing the leakage current to earth and interference generated by the
frequency inverter.
If the carrier frequency is low, output current has high harmonic wave, and then the motor will increase power loss
and temperature rising.
If the carrier frequency is higher, the power loss and temperature rising of the motor will decline. However, the
frequency inverter will have an increasing in power loss, temperature rising and interference.
Adjusting the carrier frequency will exert influences on the aspects listed in the following table.
Table 6-1 Influences of carrier frequency adjustment
Carrier frequency
Low
→
High
Motor noise
Large
→
Small
Output current
Bad
→
Good
Motor temperature
High
→
Low
Frequency inverter
Low
→
High
Leakage current
Small
→
Large
External radiation
interference
Small
→
Large
The factory setting of carrier frequency varies with the frequency inverter power. If you need to modify the carrier
Summary of Contents for EM12 Series
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