162
Note
1. The carrier wave frequency can affect noise during the motor running, generally, it can be set as 3~5kHz.
For the occasion when the quiet running is required, the carrier wave frequency can be generally set as
6~8kHz.
2. When the drive is running with the carrier wave frequency above the leave-factory setting value, the drive
needs to derate 5% of the power to run for every increase of 1kHz.
Fig.6-50 PWM mode optimization selection
Unit place: Enable the over-modulation
This function determines whether to enable the over-modulation function controlled by V/F.
0: Disabled
Disable the over-modulation function controlled by V/F.
1: Enabled
Enable the over-modulation function controlled by V/F.
Tens place: Automatic adjustment selection for carrier wave frequency
0: Disabled
1: Enabled
When the carrier wave frequency adjust automatically to select the actions, the drive can adjust the
carrier wave frequency automatically according to its internal temperature. At this moment, the actual
maximum working carrier wave frequency of the drive is limited by the carrier wave frequency (P12.02)
set by the function code.
Hundreds place: Modulation mode
0: Two-phase / three-phase switching
1: Three-phase modulation
Thousands place: Low frequency carrier limit
0: Disable
PWM mode o
timization 0000~1111H
1001
P12.03
To Next Page
Loading...