SV800/SV800A User Manual 7 Detailed function description
163
When manual boost mode selected, the value in d4-01 is the percentage of the motor rated
voltage. When the start-up torque is insufficient, please increase the value to increase the
start-up current, so as to increase the start-up torque. As shown in
Fig.7-10
:
Fig. 7-10 Torque Boost
No.
Name
Set range
Factory default
d4-02
DC braking voltage
0.0%
～
20.0%
0.0%
It’s percentage value of motor rated voltage. You can increase the value to obtain larger braking
force in DC braking. But too large value will cause large current, even motor overload and other
protection actions.
No.
Name
Set range
Factory default
d4-03
Stable gain
0.0%
～
100.0%
0.0%
Under the unstable frequency of motor rotation, increase the gain gradually until the motor
rotation is stable. But too large gain may also cause instability of motor rotation.
No.
Name
Set range
Factory default
d4-04
Start mode selection
0
～
2
1
d4-05
Restart interval for V/F control
0.100s
～
10.000s
0.100s
Set the restart time after the inverter stops in d4-05. For the starting of large power motor, the
free start mode may fail due to residual magnetic flux in the motor, so please increase the value
in d4-05. For speed is less than 10% of Max. speed, it will restart from the Min. frequency even
free start mode selected.
0: Start by speed tracking
The inverter will track the rotation speed of the motor and restart it when Running command
valid.
1: Start from Min. frequency (E0-03)
2: Start from low limit frequency (E0-01)
Whether the motor rotates or not, it will restart from
E0-03
or
E0-01
.
d4-00=1
Automatic boost
Rated
voltage
Rated
voltage
U
Rated
frequency
f
U
Rated
frequency
f
No-load
d4-00=0
Manual boost
d4-01
With load
Summary of Contents for SV800 Series
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