2.3 C: Tuning
YASKAWA ELECTRIC
TOEP C710687 03B FSDrive-MV1000 Parameter Guide
137
Solving Problems During ASR Setup
when making adjustments to ASR. Though the parameters listed below are for motor 1, the same changes
can be made to the corresponding motor 2 parameters when running a second motor.
Table 2.15 ASR Setup Problems and Corrective Actions
n
C5-01, C5-03 / C5-02, C5-04: ASR Proportional Gain 1, 2 / ASR Integral Time 1, 2
These parameters adjust the responsiveness of the ASR.
Note:
C5-01 is automatically set when ASR Tuning is performed (T1-01 = 9 or T2-01 = 9).
These parameter settings will function differently depending on the control mode.
CLV
In CLV, parameters C5-03 and C5-04 define the ASR gain an integral time at zero speed. The settings in C5-01 and
C5-02 are used at speeds above the setting in C5-07. C5-07 is set to 0 as the default so that C5-01 and C5-02 are used
over the entire speed range.
Refer to C5-07: ASR Gain Switching Frequency on page 138
Figure 2.28
Figure 2.28 Low-speed and High-speed Gain Settings
Problem
Possible Solutions
Slow response to speed changes or
speed deviation lasts for too long
• Increase the ASR gain.
• Decrease the integral time.
Overshoot or undershoot at the end
of acceleration or deceleration
• Decrease the ASR gain.
• Increase the integral time.
Vibration and oscillation occur at
constant speed
• Decrease the ASR gain.
• Increase the integral time.
• Increase the ASR delay time (C5-06).
Oscillation at low speed and response
is too slow at high speed (or vice
versa)
–
• V/f control: Use C5-01/02 and C5-03/04 to set up different ASR
settings at minimum and maximum speed.
• CLV: Use C5-01, C5-02 and C5-03, C5-04 to define optimal ASR
settings for high and low speed. Use C5-07 to define a switching
frequency.
No.
Parameter Name
Setting Range
Default
C5-01
<1>
Refer to Control Mode Dependent Parameter Default Values on page 84
for details on the default settings.
ASR Proportional Gain 1
0.00 to 300.00
Determined by A1-02
C5-02
ASR Integral Time 1
0.000 to 10.000 s
Determined by A1-02
C5-03
ASR Proportional Gain 2
0.00 to 300.00
Determined by A1-02
C5-04
ASR Integral Time 2
0.000 to 10.000 s
Determined by A1-02
Time
Speed reference
Motor Speed
Time
Speed reference
Motor Speed
Time
Speed reference
Motor Speed
P, I
P = C5-01
I = C5-02
P = C5-03
I = C5-04
C5-07
㧜
Ramp
Motor speed (Hz)
(Low speed)
common_TMonly
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