Goodrive350-19 series VFD Operating
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torque boost value based on actual load conditions.
Note
:
(1)
Torque boost is effective only under torque boost cut-off frequency;
(2)
If the torque boost is too large, low-frequency vibration or overcurrent may occur to the motor, if
such situation occurs, lower the torque boost value.
Output voltage V
Output frequency f
cut-off
boost
2.
Energy-saving run
During actual running, the VFD can search for the max. efficiency point to keep running in the most
efficient state to save energy.
Note
:
(1)
This function is generally used in light load or no-load cases.
(2)
This function is not suitable in cases where load transient occur frequently.
3.
V/F slip compensation gain
SVPWM control belongs to open-loop mode, which will cause motor speed to fluctuate when motor
load transients. In cases where strict speed requirement is needed, you can set the slip compensation
gain to compensate for the speed variation caused by load fluctuation through internal output
adjustment of VFD.
The setting range of slip compensation gain is 0
–200%, in which 100% corresponds to the
rated slip frequency.
Note
: Rated slip frequency= (Rated synchronous speed of motor
– Rated speed of motor) × (Number
of motor pole pairs)/60
4.
Oscillation control
Motor oscillation often occurs in SVPWM control in large-power drive applications. To solve this
problem, GD350-19 series VFD sets two function codes to control the oscillation factor, and you can
set the corresponding function code based on the occurrence frequency of oscillation.
Note:
The larger the set value, the better the control effect, however, if the set value is too large, it
may easily lead to too large VFD output current.
5.
Asynchronous motor I/F control
