2.4 C: Tuning
218 YASKAWA TOEPYAIGA5002A GA500 DRIVE PROGRAMMING
Problem Possible Solutions
Vibration and oscillation occur at constant speed.
• Decrease C5-01/C5-03.
• Increase C5-02/C5-04.
• Increase C5-06 [ASR Delay Time].
Oscillation at low speed and response is too slow at high
speed.
Oscillation at high speed and response is too slow at low
speed.
-
When A1-02 = 6 [Control Method Selection = AOLV/PM],
use C5-01 to C5-04 to set the best ASR settings for high
and low speed. Use C5-07 [ASR Gain Switchover
Frequency] to switch the ASR proportional gain and ASR
integral time as specified by the output frequency.
■ C5-01: ASR Proportional Gain 1
No.
(Hex.)
Name Description
Default
(Range)
C5-01
(021B)
RUN
ASR Proportional Gain 1
Sets the gain to adjust ASR response.
Determined by A1-02
(0.00 - 300.00)
A higher gain provides a higher speed response. Usually, the gain increases with larger loads. Too much gain will
cause vibration.
Note:
• When A1-02 = 0 [Control Method Selection = V/f], set H6-01 = 3 [Terminal RP Pulse Train Function = Speed Feedback (V/F Control)] to
enable this parameter.
• The drive usually sets Motor 1 ASR with C5-01 and C5-02 [ASR Integral Time 1]. When you set H1-xx = 77 [MFDI Function Select =
ASR Gain Switch], you can switch between C5-01 and C5-03 [ASR Proportional Gain 2]. You can also use C5-01 as an alternative to C5-
03 and C5-02 as an alternative to C5-04 when the speed is less than or equal to the frequency set in C5-07 [ASR Gain Switchover
Frequency].
• The drive automatically adjusts C5-01 in ASR Tuning.
■ C5-02: ASR Integral Time 1
No.
(Hex.)
Name Description
Default
(Range)
C5-02
(021C)
RUN
ASR Integral Time 1
Sets the ASR integral time.
Determined by A1-02
(0.000 - 60.000 s)
When you increase the integral time, the responsiveness will decrease. An integral time that is too short can cause
oscillation.
Note:
When A1-02 = 0 [Control Method Selection = V/f], set H6-01 = 3 [Terminal RP Pulse Train Function = Speed Feedback (V/F Control)] to
enable this parameter.
■ C5-03: ASR Proportional Gain 2
No.
(Hex.)
Name Description
Default
(Range)
C5-03
(021D)
RUN
ASR Proportional Gain 2
Sets the gain to adjust ASR response.
Determined by A1-02
(0.00 - 300.00)
A higher gain provides a higher speed response. Usually, the gain increases with larger loads. Too much gain will
cause vibration.
Note:
When A1-02 = 0 [Control Method Selection = V/f], set H6-01 = 3 [Terminal RP Pulse Train Function = Speed Feedback (V/F Control)] to
enable this parameter.
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