User Constant Tables
5-
23
Torque Compensation: C4
User constants for are torque compensation shown in the following table.
* The factory setting will change when the control method is changed. The V/f control factory setting is given.
Con-
stant
Number
Name
Description
Setting
Range
Factory
Setting
Change
during
Opera-
tion
Control Methods
MEMO
BUS
Regis-
ter
Page
V/f
V/f
with
PG
Open
Loop
Vec-
tor
Flux
Vec-
tor
C4-01
Torque
compensa-
tion gain
Sets torque compensation
gain as a ratio.
Usually setting is not neces-
sary.
Adjust in the following cir-
cumstances:
• 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 oscil-
lating, decrease the set
values.
Adjust the output current
range at minimum speed
rotation so that it does not
exceed the Inverter rated
output current.
Do not alter the torque com-
pensation gain from its
default (1.00) when using
the open loop vector control
method.
0.00 to
2.50
1.00
Yes
A
A
A
No
215H
4-18
6-46
C4-02
Torque
compensa-
tion pri-
mary delay
time con-
stant
The torque compensation
delay time is set in ms units.
Usually setting is not neces-
sary.
Adjust in the following cir-
cumstances:
• When the motor is oscil-
lating, increase the set val-
ues.
• When the responsiveness
of the motor is low,
decrease the set values.
0 to
10000
200 ms
*
No
A
A
A
No
216H
4-18
6-46
C4-03
Forward
starting
torque
Sets the forward starting
torque as a percentage of the
motor rated torque.
0.0 to
200.0
0.0%
No
No
No
A
No
217H
-
C4-04
Reverse
starting
torque
Sets the reverse starting
torque as a percentage of the
motor rated torque.
-
200.0
to 0.0
0.0%
No
No
No
A
No
218H
-
C4-05
Starting
torque time
constant
Sets the delay time in ms for
starting torque. The filter is
disabled if the time is set to 0
to 4 ms.
0 to
200
10 ms
No
No
No
A
No
219H
-
