Omron SYSDRIVE 3G3RV, User Manual

Page: 124 / 446

4
-18
Adjustment Suggestions
If
hunting, vibration, or other problems originating in the control system occur during trial operation,
adjust
the parameters listed in the following table according to the control method. This table lists only the
most
commonly used parameters.
Table 4.6 Adjusted Parameters
Control
Method
Name (Parameter
Number)
Performance
Factory
Setting
Recom-
mended
Setting
Adjustment Method
V/f
control
(A1-02
= 0
or
1)
Hunting-prevention
gain
(N1-02)
Controlling
hunting
and
vibration in mid-
dle-range
speeds (10 to
40 Hz)
1.00 0.50
to 2.00
• Reduce
the setting if
torque
is insufficient for
heavy
loads.
• Increase
the setting if hunt-
ing
or vibration occurs for
light
loads.
Carrier
frequency
selection
(C6-02)
• Reducing
motor
magnetic
noise
• Controlling
hunting
and
vibration at low
speeds
Depends
on
capac-
ity
0
to
default
• Increase
the setting if
motor
magnetic noise is
high.
• Reduce
the setting if hunt-
ing
or vibration occurs at
low
to middle-range
speeds.
Torque
compensation
primary
delay time
constant
(C4-02)
• Increasing
torque
and
speed response
• Controlling
hunting
and
vibration
Depends
on
capac-
ity
200
to 1000
ms
• Reduce
the setting if
torque
or speed response is
slow.
• Increase
the setting if hunt-
ing
or vibration occurs.
Torque
compensation
gain
(C4-01)
• Improving
torque at
low
speeds (10 Hz
or
lower)
• Controlling
hunting
and
vibration
1.00 0.50
to 1.50
• Increase
the setting if
torque
is insufficient at
low
speeds.
• Reduce
the setting if hunt-
ing
or vibration occurs for
light
loads.
Middle
output fre-
quency
voltage
(E1-08)
Minimum
output fre-
quency
voltage
(E1-10)
• Improving
torque at
low
speeds
• Controlling
shock at
startup
Depends
on
capac-
ity
and
voltage
Default
to
Default
+ 3
to
5 V *
• Increase
the setting if
torque
is insufficient at
low
speeds.
• Reduce
the setting if shock
at
startup is large.
Open-loop
vector
con-
trol
(A1-02
=
2)
Speed
feedback detec-
tion
control (AFR)
gain
(N2-01)
• Increasing
torque
and
speed response
• Controlling
hunting
and
vibration in mid-
dle-range
speeds (10
to
40 Hz)
1.00 0.50
to 2.00
• Reduce
the setting if
torque
or speed response is
slow.
• Increase
the setting if hunt-
ing
or vibration occurs.
Torque
compensation
primary
delay time
constant
(C4-02)
• Increasing
torque
and
speed response
• Controlling
hunting
and
vibration
20
ms
20
to
100
ms
• Reduce
the setting if
torque
or speed response is
slow.
• Increase
the setting if hunt-
ing
or vibration occurs.
Slip
compensation pri-
mary
delay time (C3-
02)
• Increasing
speed
response
• Improving
speed sta-
bility
200
ms
100
to
500
ms
• Reduce
the setting if speed
response
is slow.
• Increase
the setting if the
speed
is not stable.
Slip
compensation
gain
(C3-01)
• Improving
speed
accuracy
1.0 0.5
to 1.5
• Increase
the setting if
speed
response is slow.
• Reduce
the setting if the
speed
is too fast.