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08 - 18
Automatic Voltage Regulation (AVR)
Settings
This parameter determines the function of Automatic Voltage Regulation is enabled or
disabled.
This parameter is set to 01: when AVR function is disabled, AC drive will calculate input
voltage by DC Bus value (620VDC). Output voltage will vary by DC Bus varying and may
cause output current insufficiently, over current or oscillation.
This parameter is set to 00: when AVR function is enabled, AC drive will calculate output
voltage by actual voltage value of DC Bus. Output voltage won't vary by DC Bus varying.
This parameter is set to 02: AC drive will disable AVR function during decelerate to stop. It can
speed up braking in some degree.
Software Setting of the Braking Level
08 - 19
(the action level of the braking resistor)
Settings
This parameter determines software setting of the braking level.
The model VFD055~150F43A has braking chip, user could select suitable braking resistor to
have the best deceleration characteristics.
The action level of the braking resistor could be set by this parameter.
Revision July 2008, EG03, SW V1.06
Output voltage
100%
70%
Automatic Energy-saving Operation
00: AVR function enabled
01: AVR function disabled
02: AVR function disabled for deceleration
740.0V~820.0VDC
00: Disabled
During the auto energy-saving
operation, it will adjust the output
voltage according to the output
power. The maximum output
voltage can be 30% lower than
the normal output voltage.
Frequency
Chapter 4 Parameters|
Factory Setting: 00
Factory Setting: 760.0
Unit: 0.1
4-67
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