4-18
Open-loop
vector
control
(A1-02 = 2)
Speed feedback
detection 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
hunting or vibration
occurs.
Torque
compensation
primary delay time
constant (C4-02)
• Increasing torque
and speed response
• Controlling hunting
and vibration
20ms
20 to
100ms
• Reduce the setting if
torque or speed response is
slow.
• Increase the setting if
hunting or vibration
occurs.
Slip compensation
primary delay time
(C3-02)
• Increasing speed
response
• Improving speed
stability
200ms
100 to
500ms
• 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.
Open-loop
vector
control 1
(A1-02 = 2)
Carrier frequency
selection (C6-02)
• Reducing motor
magnetic noise
• Controlling hunting
and vibration at low
speeds (10Hz or
less)
Depends
on
capacity
0 to
default
• Increase the setting if
motor magnetic noise is
high.
• Reduce the setting if
hunting or vibration occurs
at low speeds.
Middle output
frequency voltage
(E1-08)
Minimum output
frequency voltage
(E1-10)
• Improving torque at
low speeds
• Controlling shock at
startup
Depends
on
capacity
and
voltage
Default to
Default + 1 or
2 V
*
• Increase the setting if
torque or speed response is
slow.
• Reduce the setting if shock
at startup is large.
Table 4.4 Adjusted User Parameters (Continued)
Control
Method
Name
(Parameter Number)
Performance
Factory
Setting
Recommended
Setting
Adjustment Method
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