Advanced Open Loop Vector Control Method For Pm Motors; Ez Open Loop Vector Control Method - YASKAWA GA500 GA50U Series Programming Manual

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Advanced Open Loop Vector Control Method for PM Motors

Table 3.18 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.
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EZ Open Loop Vector Control Method

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]
Step-out E9-xx parameters
n8-51 [Accel / Decel Pull-In
Oscillation when the motor starts.
Current]
Motor stalls. L7-01 to L7-04 [Torque Limit]
*1 The best values for a no-load operation are different than the best values for actual loading operation.
YASKAWA TOEPYAIGA5002A GA500 DRIVE PROGRAMMING
3.7 Fine Tuning during Test Runs (Adjust the Control Function)
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.
Table 3.19 Parameters for Fine Tuning the Drive (A1-02 = 8 [EZOLV])
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 E9-xx correctly.
Increase the setting value.
Increase the setting value.
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
-
Default
10.00 10.00 to 50.00
0.500 s 0.300 s to 1.000 s
0.0% 0.0% to maximum rotation speed
0.004 s 0.004 s to 0.020 s
-
80% Increase in increments of 5%.
200% Increase in increments of 10%.
Recommended Setting
*1
*1
*1
-
Recommended Setting
*1
*1
*1
-
3
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