Hunting-Prevention Function - YASKAWA CIMR-ACA4011 Instruction Manual

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
n1-01
n1-02
n1-03
-36
6
Name
Display
Hunting Preven- 0: Hunting-prevention function disabled
tion Selection 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
Hunt Prev Select
method only.
If high response is to be given priority over
vibration suppression, disable the hunting-
prevention function.
Hunting Preven- Set the hunting-prevention gain multiplication
tion Gain Setting factor.
Normally, there is no need to make this set-
ting.
Adjust this parameter as follows:
• If vibration occurs with light load, increase
Hunt Prev Gain
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.
Hunting Preven-
tion Time Constant Set the hunting-prevention primary delay time
in units of ms.
Hunt Prev Time
Setting
Description
Range
0 or 1
0.00 to
2.50
0 to 500
Control Methods
Change
Open
Default during
V/f Loop
Run
Vector
1 No A No
1.00 No A No
10 ms No A No
Flux
Vector
No
No
No