6
-22
Related Constants
Adjusting Torque Compensation Gain
Normally, there is no need to make this adjustment. Do not adjust the torque compensation gain when using
open-loop vector control.
Adjust this constant so that the output current during low-speed rotation does not exceed the Inverter rated
output current range.
Adjusting the Torque Compensation Primary Delay Time Constant
Set the torque compensation function primary delay in ms.
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.
Constant
Number
Name
Description
Setting
Range
Factory
Setting
Change
during
Operation
Control
Methods
MEMOBUS
Register
Open-
loop
Vector
Flux
Vector
Display
C4-01
Torque compensation
gain
Sets torque compensation gain
as a ratio.
Usually setting is not necessary.
Adjust in the following circum-
stances:
• When the cable is long;
increase the set value.
• When the motor capacity is
smaller than the Inverter
capacity (Max. applicable
motor capacity), increase the
set values.
• When the motor is oscillat-
ing, decrease the set values.
Adjust the output current range
at minimum speed rotation so
that it does not exceed the
Inverter rated output current.
0.00 to
2.50
1.00
Yes
A
No
270H
Torq Comp Gain
C4-02
Torque compensation
primary delay time
constant
The torque compensation delay
time is set in ms units.
Usually setting is not necessary.
Adjust in the following circum-
stances:
• When the motor is oscillat-
ing, increase the set values.
• When the responsiveness of
the motor is low, decrease
the set values.
0 to
10000
50 ms
No
A
No
271H
Torq Comp Time
