K&R GT600-4T132G User Manual page 158

6.5.8 Current Loop
Function Code
F2-13
F2-14
F2-15
F2-16
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
A5-05
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.
Function Code
F2-21
6
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
A5-00
Increasing this parameter to the max. frequency will reduce motor audible noise.
Function Code
A5-01
When the output current oscillates or large current harmonics occur, set A5-01 = 1.
Function Code
A5-03
- 156 -
This parameter helps to lower motor audible noise and reduce electromagnetic interference.
Parameter Name
Excitation adjustment proportional gain
Excitation adjustment integral gain
Torque adjustment proportional gain
Torque adjustment integral gain
Parameter Name
Voltage over modulation coefficient
Parameter Name
Max. torque coefficient of field
weakening area
Parameter Name
DPWM switchover frequency upper limit 0.00 to 15.00 Hz
Parameter Name
PWM modulation pattern
Parameter Name
Random PWM depth
6. Description of Parameters
Setting Range
0 to 60000
0 to 60000
0 to 60000
0 to 60000
Setting Range
100% to 110%
Setting Range
50% to 200%
Setting Range
Setting Range
0: Asynchronous modulation
1: Synchronous modulation
Setting Range
0: Random PWM invalid
1 to 10
Default
2000
1300
2000
1300
Default
105%
Default
100%
Default
12.00 Hz
Default
0
Default
0