Problem Possible Solutions
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, AOLV/PM, CLV/PM: 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.
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).
No. Parameter Name Setting Range Default
C5-01 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
These parameter settings will function differently depending on the control mode.
V/f Control with PG
Parameters C5-01 and C5-02 determine the ASR characteristics at maximum speed. Parameters C5-03 and C5-04 determine
the characteristics at minimum speed.
E1-04
0
P = C5-03
I = C5-04
P = C5-01
I = C5-02
E1-09
P and I setting
Motor speed
Max. output frequency
Min. output frequency
Figure 5.38 ASR Gain and Integral Time in V/f w/PG
CLV, AOLV/PM, and CLV/PM
In these control modes, 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 231.
P, I
P = C5-01
I = C5-02
P = C5-03
I = C5-04
C5-07
０
Motor speed (Hz)
(Low speed)
Ramp
Figure 5.39 Low-speed and High-speed Gain Settings
The gain set in C5-03 can also be activated with a digital input programmed to “ASR gain switch” (H1-oo = 77). When the
terminal is open, the drive uses the ASR gain level set by the pattern in the figure above. When the terminal closes, C5-03 is
used. The integral time set to C5-02 is used to change linearly between these settings. The ASR gain switch command from
a multi-function input terminal overrides the switching frequency set to C5-07.
5.3 C: Tuning
230
YASKAWA ELECTRIC SIEP C710636 04D U1000 Industrial MATRIX Drive Technical Manual
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