YASKAWA A1000 HHP Programming Manual page 55

No.
C5-04
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.
CLV, AOLV/PM, and CLV/PM
Note: PM motor control modes are not available in A1000 HHP drive models.
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.
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.
ASR Gain Switch signal
(Digital input)
Proportional gain (P)
ASR Gain Tuning (C5-01, C5-03)
The higher this setting, the faster the speed response, although a setting that is too high can lead to oscillation. Increase this
setting with larger loads to minimize the speed deviation.
ASR Integral Time Tuning (C5-02, C5-04)
Determines how fast a continuous speed deviation problem is eliminated. A setting that is too long reduces the responsiveness
of the speed control. A setting that is too short can cause oscillation.
YASKAWA ELECTRIC SIEP YEAHHP 01B YASKAWA AC Drive – A1000 HHP Programming Manual
Parameter Name
ASR Integral Time 2
P and I setting
0
E1-09
Min. output frequency
Figure 1.35 ASR Gain and Integral Time in V/f w/PG
Refer to C5-07: ASR Gain Switching Frequency on page
P, I
Ramp
０
Figure 1.36 Low-speed and High-speed Gain Settings
OFF ON
C5-02
Figure 1.37 ASR Proportional Gain Switch
Setting Range
0.000 to 10.000 s
P = C5-01
I = C5-02
P = C5-03
I = C5-04
Motor speed
E1-04
Max. output frequency
P = C5-01
I = C5-02
P = C5-03
I = C5-04 (Low speed)
Motor speed (Hz)
C5-07
C5-02
1.3 C: Tuning
Default
Determined by
A1-02
56.
Proportional gain
determined
by motor speed.
C5-03 gain setting
1
55