Yaskawa Matrix Converter - Manual (Page 201)

6
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‹ Hunting-Prevention Function
The Hunting-Prevention Function suppresses hunting when the motor is operating with a light load. This func-
tion can be set in V/f Control.
„ Related Parameters
Parameter
Number
Name
Description
Setting
Range
Default
Change
during
Run
Control Methods
Display V/f
Open
Loop
Vector
Flux
Vector
n1-01
Hunting Preven-
tion Selection 0: Hunting-prevention function disabled
1: Hunting-prevention function enabled
The hunting-prevention function suppresses
hunting when the motor is operating with a
light load.
This function is enabled in V/f Control
method only.
If high response is to be given priority over
vibration suppression, disable the hunting-
prevention function.
0 or 1 1 No A No No
Hunt Prev Select
n1-02
Hunting Preven-
tion Gain Setting Set the hunting-prevention gain multiplication
factor.
Normally, there is no need to make this set-
ting.
Adjust this parameter as follows:
• If vibration occurs with light load, increase
the setting.
• If the motor stalls, reduce the setting.
If the setting is too large, the voltage will be
too suppressed and the motor may stall.
0.00 to
2.50
1.00 No A No No
Hunt Prev Gain
n1-03
Hunting Preven-
tion Time Constant Set the hunting-prevention primary delay time
in units of ms.
0 to 500 10 ms No A No No
Hunt Prev Time