Powtran PI9000 series User Manual

Chapter 5 Function parameter
126
F5.08
Limit digital setting
0.0% to 200.0%
150 . 0%
☆
In speed control mode, the maximum value of inverter output torque is controlled by the
torque upper limit source.
F5.07 is used to select the setting source of torque limit, when it is set by analog, high-
speed pulse or communication, the set 100% corresponds to F5.08, the 100% of F5.08 is the
inverter's rated torque.
F5.09
Vector control differential
gain
50% to 200%
150%
☆
For the sensorless vector control, the parameter can be used to adjust the motor speed
and stability: if the speed of motor with load is low, increases the parameter and vice versa
decreases.
F5.10
Speed loop filter time
0.000s to 0.100s
0 . 000s
☆
Under vector control mode, properly increases the filter time when speed fluctuate
wildly; but do not excessively increases, or the lag effect will cause shock.
F5.11
Vector control
overexcitation gain
0 to 200
64
☆
In the process of the inverter's deceleration, the over-excitation control can suppress the
increase of bus voltage to avoid overvoltage fault. The greater overexcitation, the stronger the
inhibitory effect.
For the occasions that the inverter's deceleration easily cause over pressure alarm , the
overexcitation gain needs to be improved. But if overexcitation gain is too large, which easily
lead to the increase of output current, you need to weigh in practical applications.
For the small inertia occasions that the inverter's deceleration will not cause voltage rise,
it is recommended to set overexcitation gain as 0; the set value is also suitable for the
occasions with braking resistor.
F5.12
Excitation regulator
proportional gain
0 to 60000
2000
☆
F5.13
Excitation regulator
integral gain
0 to 60000
1300
☆
F5.14
Torque regulator
proportional gain
0 to 60000
2000
☆
F5.15
Torque regulator integral
gain
0 to 60000
1300
☆
The regulator parameters of vector control current loop PI, the parameter will be
obtained automatically after performing asynchronous motor parameters comprehensive auto
tunning or synchronous motor parameters comprehensive auto tunning and generally do not
need to modify it.
Note:the dimension that this current loop integral gain adopted is not the integration
time, but the direct set integral gain. Therefore, if the setting of current loop PI gain is too
large, which may cause the oscillation of entire control loop, in the event of oscillation, you
can manually reduce PI proportional gain and integral gain.
5-2-8.Keyboard and display: F6.00-F6.19

Powtran PI9000 series Specifications

General

Brand	Powtran
Model	PI9000 series
Category	Inverter
Language	English