The User Manual of JAC200 Series General Frequency Converter
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The wave sending mode is determinable when an asynchronous motor operates and the value lower than
this number belongs to 7-period continuous modulation mode and otherwise it belongs to 5-period
continuous modulation mode.
The switch consumption of frequency converter is quite large when 7-period is adjusted continuously while
the current ripple brought is quite small. The switch consumption of frequency converter is quite large when
5-period is adjusted continuously while the current ripple brought is quite large. However, the high
frequency can cause the instability for motor operation and it does not need to modify generally.
For the instability of VF operation, please refer to function code F3-11 and for the consumption of
frequency consumption, please refer to function code F0-15.
A5-01
PWM modulation mode
Default value
0
Set range
0
Asynchronous modulation
1
Synchronous modulation
It is valid only for VF control.
Synchronous modulation refers to the linear change of carrier frequency along with the change of frequency
to make sure that the specific value (carrier ratio) can not be changed. Generally it is used when the output
frequency is quite high and it is convenient to output the quality of voltage.
When the output frequency is quite low (lower than 100HZ), synchronous modulation is not required for the
specific value between carrier frequency because output frequency is quite high and synchronous
modulation shall be more convenient.
When operation frequency is higher than 85Hz, asynchronous modulation can be invalid and under the
frequency, immobilization is synchronous modulation mode.
A5-02
Compensation mode selection for
dead zone
Default value
1
Set range
0
No compensation
1
Compensation mode 1
2
Compensation mode 2
The parameters hereby do not need to modify and they only have special requirements for the quality of
voltage output waveform and otherwise when the motor works abnormally, such as vibration, various
compensation modes shall be switched tentatively. The machines with superpower are advised to use
Compensation mode 2.
A5-03
Random PWM depth
Default value
0
Set range
0
Random PWM invalid
1
～
10
PWM carrier random depth
Set random PWM and it can change monotonous and has motor sound into soft sound. Besides, it is useful
