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7 Advanced Settings
High-function General-purpose Inverter RX2 Series User’s Manual
7-5 Start Conditions
7
7-5-1 Selection of Reduced Voltage Startup
7-5 Start Conditions
This function allows you to make the inverter increase the voltage gradually when starting the motor
while outputting the minimum frequency.
The time to reach the output voltage for the reduced voltage start can be set with [Hb131].
Precautions for Correct Use
• Set a small value for the reduced voltage start selection [Hb131] if you intend to increase the
start torque. On the other hand, setting a small value will cause the inverter to perform
full-voltage starting and to easily trip because of overcurrent.
• This function is effective only when V/f control (constant torque characteristics, reduced
torque characteristics, or free V/f control) is selected for the control method [AA121].
7-5-1 Selection of Reduced Voltage Startup
Item Parameter Data Description
Default
data
Minimum fre-
quency adjust-
ment, 1st-motor
[Hb130]
0.00 to
10.00(Hz)
This is the start frequency. 0.50
Reduced voltage
start time setting,
1st-motor
[Hb131] 0 to 2000(ms)
Increases the output voltage over the set time,
from the operation start to the voltage command
equivalent to the minimum frequency.
36
Output
frequency
Minimum
frequency
[Hb130]
Output voltage
Reduced voltage start
time [b131]
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