3.10 Fine Tuning during Test Runs (Adjust the Control Function)
212
YASKAWA ELECTRIC
SIEP C710617 05F YASKAWA AC Drive GA700 Technical Manual
Issue
Parameter Number
Solution
Default Setting
Recommended
Setting
Stalling or oscillation
occurs when load is
applied during constant
speed
n8-47 [Pull-in Current
Comp Filter Time]
Decrease the setting value
in increments of 0.2 s.
5.0 s
-
n8-48 [Pull-in/Light Load
Id Current]
Increase the setting value
in increments of 5%.
30%
-
n8-55 [Motor to Load
Inertia Ratio]
Increase the setting value.
Note:
When operating a
single motor or with a
minimum amount of
inertia, setting this
value too high can
cause motor
oscillation.
0
Near to the actual load
inertia ratio.
Hunting or oscillation
n8-45 [Speed Feedback
Detection Gain]
Increase the setting value
in increments of 0.05.
0.80
-
The drive detects
STPo
[Motor Step-Out
Detected]
fault when the
load is not too high.
•
E5-09 [PM Back-EMF
Vpeak (mV/(rad/s))]
•
E5-24 [PM Back-EMF
L-L Vrms (mV/rpm)]
•
Adjust the setting
value.
•
Examine the motor
code on the motor
nameplate or the data
sheet, then set correct
values for
E5-09
or
E5-
24
.
•
Yaskawa motor
Set the motor code
from the motor
nameplate.
•
Motor from another
manufacturer
Set the values from the
test report.
The drive detected stalling
or
STPo [Motor Step-Out
Detected]
at high speed
and maximum output
voltage.
n8-62 [Output Voltage
Limit Level]
Set to a value lower than
the actual input voltage.
•
200.0 V
•
400.0 V
-
*1
Default value changes when
E5-01 [Motor Code Selection]
and
o2-04 [Drive Model (KVA) Selection]
values change.
◆
Advanced Open Loop Vector Control Method for PM
Table 3.22 Parameters for Fine Tuning the Drive (Advanced Open Loop Vector Control Method for PM)
Issue
Parameter Number
Solution
Default Setting
Recommended
Setting
•
Torque or speed
response are slow.
•
Hunting or oscillation
•
High speed
C5-01 [ASR
Proportional Gain 1
(P)]
•
Low speed
C5-03 [ASR
Proportional Gain 2
(P)]
•
If torque or speed
response are slow,
increase the setting
value in increments of
5.00.
•
If hunting or oscillation
occur, decrease the
setting value.
10.00
5.00 - 30.00
•
High speed
C5-02 [ASR Integral
Time 1 (I)]
•
Low speed
C5-04 [ASR Integral
Time 2 (I)]
•
If torque or speed
response are slow,
decrease the setting
value.
•
If hunting or oscillation
occur, increase the
setting value.
0.500 s
0.300 to 1.000 s
The drive cannot find
ASR proportional gain or
integral time for low
speed or high speed.
C5-07 [ASR Gain
Switchover Frequency]
Change the ASR
proportional gain and
ASR integral time to
conform to the output
frequency.
0.0 %
0.0% to maximum
rotation speed
Hunting or oscillation
C5-06 [ASR Delay Time]
If the rigidity of the
machine is unsatisfactory
and vibration is possible,
increase the setting value
in increments of 0.010.
0.016 s
0.016 to 0.035 s
Step-out
E1-xx parameters, E5-xx
parameters
Refer to the motor
nameplate or test report
and set
E1-xx
or
E5-xx
correctly.
-
-