Chapter 4 Parameters|
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4-70 Revision 2016/03, 6ELE, V1.14
08.17
Automatic Energy-saving
Factory Setting: 0
Settings 0 Energy-saving operation disabled
1 Energy-saving operation enabled
70%
100%
Voltage
Output Frequency
During auto-energy saving
operation is the output
voltage lowered as much
as possible to keep the load.
The output voltage is maximally
lowered to 70% of the normal
output voltage
08.18
Automatic Voltage Regulation (AVR)
Factory Setting: 0
Settings 0 AVR function enabled
1 AVR function disabled
2 AVR function disabled for deceleration
3 AVR function disabled for stop
The rated voltage of the motor is usually 230V/200VAC 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 200VAC.
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.
08.19
Reserved
08.20
Compensation Coefficient for Motor Instability Unit: 0.1
Settings 0.0~5.0 Factory Setting: 0.0
The drift current will occur in a specific zone of the motor and it will make motor instable. By using this
parameter, it will improve this situation greatly.
The drift current zone of the high-power motors is usually in the low frequency area.
It is recommended to set to more than 2.0.
08.21
Level of Pre-heat DC Current Unit: 1%
Settings 0~100% Factory Setting: 0
This parameter controls the level of the pre-heat DC current input to the motor. The percentage of the pre-heat
DC current equals to the percentage of motor rated current (07-00). So when setting up this parameter, increase
slowly the level to reach the desired pre-heat temperature.
Related parameters: Pr08-22 [Pre-heat DC Current Cycle Time], Pr03-00 [Multi-function Output Relay #24:
Indication of Pre-heat Function], Pr04-05 ~ Pr04-08 [Multi-function Input Terminal #26: Auto-trigger pre-heat
function].
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