YASKAWA Varispeed G7 Series Instruction Manual page 157

Torque Compensation: C4
User constants for torque compensation are shown in the following table.
Name
Con-
stant
Display
Number
Torque com- Sets torque compensation
pensation gain as a ratio.
gain 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.
C4-01
• When the motor is oscillat-
Torq Comp
ing, decrease the set val-
Gain
ues.
Adjust the output current
range at minimum speed rota-
tion so that it does not exceed
the Inverter rated output cur-
rent.
Do not alter the torque com-
pensation gain from its
default (1.00) when using the
open-loop vector 1 control
method.
Torque com- The torque compensation
pensation delay time is set in ms units.
primary Usually setting is not neces-
delay time sary.
constant Adjust in the following cir-
C4-02 cumstances:
• When the motor is oscillat-
ing, increase the set values.
Torq Comp
• When the responsiveness
Time
of the motor is low,
decrease the set values.
Forward
starting
Sets the forward starting
torque
C4-03 torque as a percentage of the
F
motor rated torque.
TorqCmp@
start
Reverse
starting
Sets the reverse starting
torque
C4-04 torque as a percentage of the
R
motor rated torque.
TorqCmp@
start
Starting
Sets the delay time in ms for
torque time
starting torque. The filter is
constant
C4-05
disabled if the time is set to 0
TorqCmp
to 4 ms.
DelayT
* The factory setting will change when the control method is changed. The open-loop vector 1 factory settings are given.
Setting Factory
Description
Range Setting
0.00 to
2.50
0 to
20 ms
10000
0.0 to
0.0%
200.0
-200.0
0.0%
to 0.0
0 to
10 ms
200
Control Methods
Change
Open
during
V/f Loop
Opera-
V/f with Vec-
tion
PG tor
1
1.00 Yes A A A
No A A A
*
No No No A
No No No A
No No No A
User Constant Tables
MEMO-
Open
BUS
Flux Loop
Page
Regis-
Vec- Vec-
ter
tor tor
2
4-29
No No 215H
6-39
4-29
No No 216H
6-39
No No 217H –
No No 218H –
No No 219H –
5-
25