Parameter Groups
‑352‑
0: Asynchronous modulation
1: Synchronous modulation
Synchronous modulation mode 2
Synchronous modulation mode 3
Description
When the result of the carrier frequency divided by the running frequency is
smaller than 10, output current oscillation or large current harmonic waves may
occur. To address the problem, set this parameter to 1 (synchronous modulation).
0: Asynchronous modulation
In this mode, the carrier frequency and signal wave frequency are not
synchronized. Usually, the carrier frequency keeps unchanged. When the signal
wave frequency changes, the carrier ratio will change accordingly.
2: Synchronous modulation mode 2
3: Synchronous modulation mode 3
A5-02
Dead zone compensation mode selection
Address:
0xA502
Min.:
0
Unit:
‑
Max.: 2 Data type: UInt16
Default:
2
Change:
At stop
Value Range:
0: Disabled
1: Enabled
Description
A dead zone must be reserved for the switch signals of the upper and lower switch
transistors on the same bridge arm of the AC drive. Dead zone compensation can
improve the current waveform when the motor runs at low frequency.
A5-03
Random PWM depth
Address:
0xA503
Min.:
0
Unit:
‑
Max.: 10 Data type: UInt16
Default:
0
Change: In real time
Value Range:
0–10
Description
If the motor noise is loud, setting A5‑03 to a non‑zero value can improve the
motor noise. The higher the value, the better the effect. However, if the value is
too high, the motor control may be affected. Therefore, set this parameter to 1
first during commissioning and then increase it by 1 each time according to the
field application.
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