Automatic Energy-Saving; Automatic Voltage Regulation (Avr) - Delta VFD-B User Manual

Chapter 5 Parameters|VFD-B Series
08 - 15

Automatic Energy-saving

Settings
Output
Voltage
100%
08 - 16

Automatic Voltage Regulation (AVR)

Settings
The rated voltage of the motor is usually 200V/230VAC 50Hz/60Hz and the input voltage of
the AC motor drive may vary between 180V to 264 VAC 50Hz/60Hz. Therefore, when the AC
motor drive 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 AC motor drive output voltage to the Maximum
Output Voltage (Pr.01-02). For instance, if Pr.01-02 is set at 200 VAC and the input voltage is
at 200V to 264VAC, then the Maximum Output Voltage will automatically be reduced to a
maximum of 200 VAC.
When motor stops with deceleration, it will shorten deceleration time. When setting this
parameter to 02 with auto acceleration/deceleration, it will offer a quicker deceleration.
5-78
00 Energy-saving operation disabled
01 Energy-saving operation enabled
70%
00 AVR function enabled
01 AVR function disabled
02 AVR function disabled for deceleration
During auto-energy saving
operation, the output
voltage is lowered as much
as possible while maintaining
the load. Maximum output voltage
is 70% of the normal output voltage.
Output Frequency
Revision July 2008, BE16, SW V4.08 & V5.00
Factory Setting: 00
Factory Setting: 00