6. Description of Parameters
Function Code
Parameter Name
Setting Range
Default
F2-21
Max. torque coefficient of field
weakening area
50% to 200%
100%
6
6.5.8 Current Loop
Function Code
Parameter Name
Setting Range
Default
F2-13
Excitation adjustment proportional gain
0 to 60000
2000
F2-14
Excitation adjustment integral gain
0 to 60000
1300
F2-15
Torque adjustment proportional gain
0 to 60000
2000
F2-16
Torque adjustment integral gain
0 to 60000
1300
These function parameters are vector control current loop PI parameters. They are obtained from
motor auto-tuning. Adjustment of these parameter is not required normally.
The dimension of current loop integral regulator is integral gain rather than integral time. Very
large current loop PI gain may lead to control loop oscillation. When current oscillation or torque
fluctuation is great, decrease the proportional gain or integral gain.
6.5.9 Improving Field Weakening Area Performance
Function Code
Parameter Name
Setting Range
Default
A5-05
Voltage over modulation coefficient
100% to 110%
105%
This parameter indicates boost capacity of maximum voltage of the AC drive. Increasing A5-05
will improve max. loading capacity in motor field weakening area. Be aware that this may lead to
an increase in motor current ripple and an increase in motor heating.
Decreasing it will reduce motor current ripple and motor heating. Be aware that this will lower
max. loading capacity in motor field weakening area. Adjustment of this parameter is not required
normally.
This parameter takes effect only when the motor runs above the rated motor frequency.
When the motor need rapidly accelerate to twice of rated motor frequency but actual acceleration
time is very long, decrease the setting of F2-21 adequately.
When the motor runs above twice of rated motor frequency and speed dip is very large after
a load is added, increase the setting of F2-21 adequately. Adjustment of this parameter is not
required normally.
6.5.10 Auxiliary Control
Function Code
Parameter Name
Setting Range
Default
A5-00
DPWM switchover frequency upper limit
0.00 to 15.00 Hz
12.00 Hz
Increasing this parameter to the max. frequency will reduce motor audible noise.
Function Code
Parameter Name
Setting Range
Default
A5-01
PWM modulation pattern
0: Asynchronous modulation
1: Synchronous modulation
0
When the output current oscillates or large current harmonics occur, set A5-01 = 1.
- 156 -
This parameter helps to lower motor audible noise and reduce electromagnetic interference.
Function Code
Parameter Name
Setting Range
Default
A5-03
Random PWM depth
0: Random PWM invalid
1 to 10
0
Summary of Contents for GT600-4T132G
Page 1: ...GT600 AC Drive...
Page 5: ......
Page 86: ...5 Quick Setup 5 1 Get Familiar With Operating Panel 86 5 2 Setup Flowchart 87...
Page 87: ......
Page 100: ...5 Quick Setup 98 5...
Page 280: ...8 Peripherals and Options 278 8...
Page 306: ...12 303 11...
Page 362: ......
