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User Manual of EM730/EM730E Series Inverter
264
increase.
Function
code
Function code name
Parameter description Unit
Default
setting
Attribute
F15.36
Switching options of PWM
modulation mode
0: invalid (7-segment
PWM modulation)
1: valid (5-segment
PWM modulation)
0
〇
F15.37
Switching frequency of PWM
modulation mode
0.00 to maximum
frequency F00.16
Hz
15.00
●
When the PWM modulation mode is invalid (F15.36=0), the 7-segment PWM modulation
will be enabled. When the WM modulation mode is valid (F15.36=1), the 7-segment PWM
modulation will be enabled at the output frequency lower than the switching frequency (F15.37)
and the 5-segment PWM modulation will be enabled at the output frequency higher than the
switching frequency. The 7-segment PWM modulation has a smaller current ripple than
5-segment PWM modulation, but involves larger switching loss, more heat from the inverter,
and larger temperature rise.
Function code
Function code name
Parameter description Unit
Default
setting
Attribute
F15.38
Options of dead zone
compensation mode
0: no compensation
1: compensation mode 1
2: compensation mode 2
1
〇
This parameter does not need to change under normal circumstances in the dead zone
compensation mode. Users need to select a different compensation mode only in case of special
requirements for the quality of the output voltage waveform or other abnormalities (e.g. motor
oscillation).
The compensation mode 1 is often selected. If the motor is prone to oscillation at high power
and under VF control, the compensation mode 2 may be selected.
Function
code
Function code name
Parameter description
Unit
Default
setting
Attribute
F15.39 Terminal jog priority
0: Invalid
1: valid
0
〇
In the terminal control mode (F00.02=1), this function code is used to set the highest
priority of the jog command. If the terminal jog priority is valid (F15.39=1), the running status
can be switched to jog running in the presence of a valid jog terminal; and if the terminal jog
priority is invalid (F15.39=0), the running status cannot be directly switched to jog running.