12-14-1
Chapter 12
Inverter Function
12.14 Changing the Start Mode
12.14.1
Starting with increasing voltage
gradually
• How to minimize overcurrent at starting when the
minimum frequency has been set high to obtain a
higher torque.
• 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].
• 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].
Item
Parameter
Data
Description
Minimum frequency
[Hb130]
0.00~10.00(Hz)
This is the start frequency.
Reduced voltage start
time
[Hb131]
0~2000(ms)
Increases the output voltage over
the set time, from the operation start
to the voltage command equivalent
to the minimum frequency.
Q
A
!
FW
Output
Output voltage
Minimum
frequency
[Hb130]
0ms 10ms
60ms
Reduced voltage start time
[b131]
Содержание SJ Series
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