Ez Open Loop Vector Control Method - YASKAWA CIPR-GA50C series Technical Manual

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EZ Open Loop Vector Control Method

Table 4.21 Parameters for Fine Tuning the Drive (A1-02 = 8[EZOLV])
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
Oscillation when the motor starts. n8-51 [Accel / Decel Pull-In
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 SIEPC71061753A GA500 Technical Manual
4.11 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
slow, decrease the setting
C5-02 [ASR Integral Time 1]
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 Recommended Setting
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%.
*1
*1
*1
-
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