Ez Open Loop Vector Control Method - YASKAWA GA700 Technical Manual

3.10 Fine Tuning during Test Runs (Adjustment of Control Functionality)
Issue
Hunting, oscillation C5-06 [ASR Delay Time]
E1 parameter, E5
Step-out
parameter
*1 The optimal values for a no-load operation can differ from the optimal values for actual loading operation.
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EZ Open Loop Vector Control Method

Table 3.23 Parameters for Fine Tuning the Drive (EZ Open Loop Vector Control Method)
Issue
• High speed
• Low speed
• Torque, speed response
is slow.
• Hunting, oscillation
• High speed
• Low speed
ASR proportional gain or
integral time cannot be C5-07 [ASR Gain
established for low speed Switchover Frequency]
or high speed.
Hunting, oscillation C5-06 [ASR Delay Time]
Step-out E9 parameter
Oscillation occurs when n8-51 [Accel / Decel Pull-
motor starts. In Current]
L7-01 to L7-04 [Torque
Motor stalls.
Limit]
*1 The optimal values for a no-load operation can differ from the optimal values for actual loading operation.
172
Parameter Number
Raise setting value in
increments of 0.010 when
vibration is likely to occur
due to poor machine
rigidity.
Refer to the motor's test
report or nameplate and
set E1-xx or E5-xx
correctly.
Parameter Number
• Increase setting value in
C5-01 [ASR
increments of 5.00
Proportional Gain 1
when torque, speed
(P)]
response is slow.
• If hunting, oscillation
C5-03 [ASR
occurs, reduce the
Proportional Gain 2
setting value.
(P)]
• Reduce setting value
C5-02 [ASR Integral when torque, speed
Time 1 (I)] response is slow.
• If hunting, oscillation
C5-04 [ASR Integral occurs, increase the
Time 2 (I)] setting value.
Change the ASR
proportional gain and
ASR integral time in
accordance with the
output frequency.
Raise setting value in
increments of 0.010 when
vibration is likely to occur
due to poor machine
rigidity.
Refer to the motor's test
report or nameplate and
set E9-xx correctly.
Increase setting value.
Increase setting value.
YASKAWA ELECTRIC SIEP C710617 01B YASKAWA AC Drive GA700 Technical Manual
Solution Default Setting
0.004 s
Solution Default Setting
10.00
0.500 s
0.0%
0.004 s
80%
200%
Suggested Setting
0.004 to 0.020 seconds
- -
Suggested Setting
10.00 - 50.00
*1
0.300 to 1.000 seconds
0.0% to maximum
rotation speed
0.004 to 0.020 seconds
- -
Increase in increments of
5%.
Increase in increments of
10%.
*1
*1
*1