Improved Operating Efficiency
6-47
Normally, there is no need to make this setting. Adjust the constant as shown below.
• If the motor is vibrating, increase the set value.
• If the motor response is low, decrease the set value.
îš‹ Hunting-prevention Function
The hunting-prevention function suppresses hunting when the motor is operating with a light load. This func-
tion can be used in V/f and V/f with PG.
îš„Related Constants
Con-
stant
Number
Name Description
Setting
Range
Factory
Setting
Change
during
Opera-
tion
Control Methods
MEMO
BUS
Regis-
ter
V/f
V/f
with
PG
Open
Loop
Vec-
tor
Flux
Vec-
tor
N1-01
Hunting-pre-
vention func-
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 suppres-
sion, disable the hunting-pre-
vention function.
0 or 1 1 No A A No No 580H
N1-02
Hunting-pre-
vention gain
Set the hunting-prevention gain
multiplication factor.
Normally, there is no need to
make this setting.
Make the adjustments as fol-
lows:
• 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 A No No 581H
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