INVT GD350-004G/5R5P-45-AS, Руководство по эксплуатации

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Goodrive350 IP55 High-ingress Protection Series VFD Basic Operation Instructions
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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 does for fit in cases where load transient is required.
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, users can set the
slip compensation gain to compensate for the speed variation caused by load fluctuation
through internal output adjustment of VFD.
The set range of slip compensation gain is 0
–200%, in which 100% corresponds to 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, the GD350 IP55 series VFD sets two function codes to control the oscillation
factor, and users 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.
Customized V/F curve (V/F separation) function: