Advanced Open Loop Vector Control Method For Pm Motors - YASKAWA GA800 Maintenance & Troubleshooting

Issue
n8-47 [Pull-in Current Comp Filter
Time]
n8-48 [Pull-in/Light Load Id
Current]
Stalling or oscillation occurs when
you apply the load during constant
speed
n8-55 [Motor to Load Inertia
Ratio]
n8-45 [Speed Feedback Detection
Hunting or oscillation
Gain]
• E5-09 [PM Back-EMF Vpeak
The drive detects STPo [Motor
Step-Out Detected] fault when the
• E5-24 [PM Back-EMF L-L
load is not too high.
The drive detected stalling or STPo
[Motor Step-Out Detected] at high n8-62 [Output Voltage Limit
speed and maximum output Level]
voltage.
*1 The default setting changes when the settings for E5-01 [Motor Code Selection] and o2-04 [Drive Model (KVA) Selection] change.
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Advanced Open Loop Vector Control Method for PM Motors

Table 6.22 Parameters for Fine Tuning the Drive (A1-02 = 6 [AOLV/PM])
Issue
• High speed
• Low speed
• Unsatisfactory motor torque
and speed response
• Hunting or oscillation
• High speed
• Low speed
The drive cannot find ASR
C5-07 [ASR Gain Switchover
proportional gain or integral time
Frequency]
for low speed or high speed.
Hunting or oscillation C5-06 [ASR Delay Time]
E1-xx parameters, E5-xx
Step-out
parameters
*1 The best values for a no-load operation are different than the best values for actual loading operation.
YASKAWA TOEPYAIGA8001B GA800 Drive Maintenance & Troubleshooting
6.10 Fine Tuning during Test Runs (Adjust the Control Function)
Parameter Number Possible Solutions
Decrease the setting value in
increments of 0.2 s.
Increase the setting value in
increments of 5%.
Increase the setting value.
Note:
When you operate a single
motor or with a minimum
quantity of inertia, if you set
this value too high, it can cause
motor oscillation.
Increase the setting value in
increments of 0.05.
• Adjust the setting value.
• Examine the motor code on the
(mV/(rad/s))]
motor nameplate or the data
sheet, then set correct values for
Vrms (mV/rpm)]
E5-09 or E5-24.
Set to a value lower than the actual
input voltage.
Parameter Number Possible Solutions
• If torque or speed response are
C5-01 [ASR Proportional Gain
slow, increase the setting value
1]
in increments of 5.00.
• If hunting or oscillation occur,
C5-03 [ASR Proportional Gain
decrease the setting value.
2]
• If torque or speed response are
C5-02 [ASR Integral Time 1] slow, decrease the setting value.
• If hunting or oscillation occur,
C5-04 [ASR Integral Time 2] increase the setting value.
Change the ASR proportional gain
and ASR integral time to conform
to the output frequency.
If the rigidity of the machine is
unsatisfactory and vibration is
possible, increase the setting value
in increments of 0.010.
Refer to the motor nameplate or
test report and set E1-xx or E5-xx
correctly.
Default
5.0 s
30%
0 Near the load inertia ratio.
0.80
• Yaskawa motor
Set the motor code from the
motor nameplate.
*1
• Motor from another
manufacturer
Set the values from the test
report.
• 200.0 V
• 400.0 V
Default
10.00 5.00 to 30.00
0.500 s 0.300 s to 1.000 s
0.0% 0.0% to maximum rotation speed
0.016 s 0.016 s to 0.035 s
-
Recommended Setting
-
-
-
-
Recommended Setting
*1
*1
*1
-
6
505