CHAPTER 12: DESCRIPTION OF PARAMETER SETTINGS
63-4528—04 204
• The rated voltage of the motor is usually 220V/200VAC 60Hz/50Hz and the input voltage of the VFD may vary between 180V
to 264 VAC 50Hz/60Hz. Therefore, when the VFD is used without AVR function, the output voltage will be the same as the
input voltage. When the motor runs at voltages exceeding the rated voltage with 12% - 20%, its lifetime will be shorter and it
can be damaged due to higher temperature, failing insulation and unstable torque output.
• AVR function automatically regulates the VFD output voltage to the motor rated voltage. For instance, if V/f curve is set at 200
VAC/50Hz and the input voltage is at 200V to 264VAC, then the motor Output Voltage will automatically be reduced to a
maximum of 200VAC/50Hz. If the input voltage is at 180V to 200VAC, output voltage to motor and input power will be in direct
proportion.
• Setting 0: when AVR function is enabled, the drive will calculate the output voltage by actual DC-bus voltage. The output
voltage won’t be changed by DC bus voltage.
• Setting 1: when AVR function is disabled, the drive will calculate the output voltage by DC-bus voltage. The output voltage will
be changed by DC bus voltage. It may cause insufficient/over current.
• Setting 2: the drive will disable the AVR during deceleration, such as operated from high speed to low speed.
• When the motor ramps to stop, the deceleration time is longer. When setting this parameter to 2 with auto acceleration/
deceleration, the deceleration will be quicker.
a
07 - 22 Auto Voltage Regulation (AVR) Function
Factory Setting: 0
Settings 0: Enable AVR
1: Disable AVR
2: Disable AVR during deceleration
07 - 23 PWM Fan Speed
Factory Setting: 60
Settings 0~100%
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