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7 Detailed function description SV800/SV800A User Manual
164
No.
Name
Set range
Factory default
d4-06
Torque limit at motoring side
0%
~
200%
150%
d4-07
Torque limit at regenerating side
0%
~
200%
150%
d4-08
The motoring side torque limit selection
0
~
1
0
d4-09
The regenerating side torque limit selection
0
~
1
0
0:Invalid
1:Valid
In V/F control mode, torque control cannot be performed directly. The accuracy of torque limit
is not high because it’s indirect torque limit. When high accuracy needed, please choose vector
control mode.
No.
Name
Set range
Factory default
d4-10
VF curve selection
0
~
6
0
d4-11
VF curve voltage 1
220V
:
0V
~
230V
380V
:
0V
~
460V
0V
d4-12
VF curve frequency 1
0.00Hz
~
d4-14
0.00Hz
d4-13
VF curve voltage 2
220V
:
0V
~
230V
380V
:
0V
~
460V
0V
d4-14
VF curve frequency 2
d4-12
~
d4-16
0.00Hz
d4-15
VF curve voltage 3
220V
:
0V
~
230V
380V
:
0V
~
460V
0V
d4-16
VF curve frequency 3
d4-14
~
d4-18
0.00Hz
d4-17
VF curve t voltage 4
220V
:
0V
~
230V
380V
:
0V
~
460V
0V
d4-18
VF curve frequency 4
d4-16
~
b1-05
0.00Hz
The V/F curve can be set with the above parameters. Straight line, quadratic curve or polyline
can be selected according to the load characteristics. Straight line suitable for constant torque
load, quadratic curve and decreased torque curve suitable for fan and pump load.
0: Straight line
1:1.2 power curve
2:1.4 power curve
3:1.6 power curve
4:1.8 power curve
5: 2.0 power curve
6: Polyline
When polyline selected, it can be defined by d4-11~d4-18. The relationship for each point as
follow:
d4-11
<
d4-13
<
d4-15
<
d4-17
,
d4 -12
<
d4-14
<
d4-16
<
d4-18
. If set too high voltage at low
frequencies, the motor may overheat or even burn out. The inverter may over-speed or
over-current protection.
V/F curve as shown in
Fig. 7-11
: