Hunting-Prevention Function - YASKAWA CIMR-F7A Instruction Manual

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.
•

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.
Related Constants
Con-
Name
stant
Number
0: Hunting-prevention function
disabled
1: Hunting-prevention function
enabled
The hunting-prevention function
suppresses hunting when the
Hunting-pre-
motor is operating with a light
N1-01 vention func-
load.
tion selection
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.
Set the hunting-prevention gain
multiplication factor.
Normally, there is no need to
make this setting.
Make the adjustments as fol-
lows:
Hunting-pre-
N1-02 • If vibration occurs with light
vention gain
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.
Setting
Description
Range
0 or 1
0.00 to
2.50
Improved Operating Efficiency
Control Methods
Change
Open
Factory during
V/f
Loop
Setting Opera-
V/f with
Vec-
tion
PG
1 No A A
1.00 No A A
MEMO
BUS
Flux
Regis-
Vec-
ter
tor
tor
No No 580H
No No 581H
6-
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