3.12 Controllability Problems and Possible Solutions
YASKAWA
SIEPC71061723A YASKAWA AC Drive CR700 Technical Manual
241
Problem
Parameter Number
Solution
Default
Recommended Value
Improve speed accuracy
E2-02 [Motor Rated Slip]
•
Decouple the motor and
machinery and perform
Rotational Auto-Tuning.
•
If the actual motor speed is
slow, increase the value of
E2-
02
in tiny increments (by
approximately 0.1% of the
default setting value).
•
If the actual motor speed is
fast, decrease the value of
E2-
02
in tiny increments (by
approximately 0.1% of the
default setting value).
Adjust the value of
E2-02
that was
automatically set as the result of
Rotational Auto-Tuning within a
range of ±5% of the current value.
•
Torque, speed response is
slow.
•
Hunting, oscillation
•
High speed
C5-01 [ASR Proportional Gain
1]
•
Low speed
C5-03 [ASR Proportional Gain
2]
•
Increase setting value in
increments of 5.00 when
torque, speed response is slow.
•
If hunting, oscillation occurs,
decrease the setting value.
20.00
10.00 to 50.00
•
High speed
C5-02 [ASR Integral Time 1]
•
Low speed
C5-04 [ASR Integral Time 2]
•
Decrease setting value when
torque, speed response is slow.
•
If hunting, oscillation occurs,
increase the setting value.
0.500 s
0.300 s to 1.000 s
Speed response cannot be secured
for low speed or high speed.
•
C5-07 [ASR Gain Switchover
Frequency]
•
High speed
C5-01 [ASR Proportional Gain
1]
C5-02 [ASR Integral Time 1]
•
Low speed
C5-03 [ASR Proportional Gain
2]
C5-04 [ASR Integral Time 2]
Change the ASR proportional
gain and ASR integral time in
accordance with the output
frequency.
0.0 Hz
0.0 Hz to maximum output
frequency
Hunting, oscillation
C5-06 [ASR Delay Time]
•
Decrease setting value in
increments of 0.010 when
torque, speed response is slow.
•
Increase setting value when
vibration is likely to occur due
to poor machine rigidity.
0.004 s
0.004 s to 0.020 s
*1
Differs depending on setting for
o2-04 [Drive Model (KVA) Selection]
, when at default settings.
*2
Differs depending on setting for
o2-04 [Drive Model (KVA) Selection]
, when at default settings.
*3
For more information about speed control (ASR), refer to the section where the
C5 parameter
is explained.
*4
The optimal values for a no-load operation can differ from the optimal values for actual loading operation.
Содержание CR700
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Страница 244: ...3 13 Test Run Checklist 244 YASKAWA SIEPC71061723A YASKAWA AC Drive CR700 Technical Manual ...
Страница 422: ...7 7 Storage Guidelines 422 YASKAWA SIEPC71061723A YASKAWA AC Drive CR700 Technical Manual ...
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