YASKAWA FSDrive-MV1000 Parameter Manual page 138

2.3 C: Tuning
The gain set in C5-03 can also be activated with a contact input programmed to "ASR gain switch" (H1-
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.
Figure 2.29
ASR Gain Switch signal
(Contact 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.
C5-06: ASR Primary Delay Time Constant
n
This parameter sets the filter time constant for the time from the speed loop to the torque command output. Increase this
setting gradually in increments of 0.01 for loads with low rigidity or when oscillation is a problem. This parameter rarely
needs to be changed.
No.
C5-06
<1> Refer to Control Mode Dependent Parameter Default Values on page 84
C5-07: ASR Gain Switching Frequency
n
Sets the frequency where the drive should switch between ASR proportional gain 1 and 2 (C5-01, C5-03) as well as
between integral time 1 and 2 (C5-02, C5-04).
Switching the proportional gain and integral time in the low or high speed range can help stabilize operation and avoid
resonance problems. A good switching point is 80% of the frequency where oscillation occurs or at 80% of the target
speed.
No.
C5-07
<1> Refer to Control Mode Dependent Parameter Default Values on page 84
Note: A contact input set for the ASR gain switch (H1-
C5-08: ASR Integral Limit
n
Sets the upper limit for ASR as a percentage of the rated load.
No.
C5-08
138
OFF ON
C5-02
Figure 2.29 ASR Proportional Gain Switch
Name
ASR Primary Delay Time Constant
Name
ASR Gain Switching Frequency
Name
ASR Integral Limit
C5-02
Setting Range
0.000 to 0.500 s
for details on default settings.
Setting Range
0.0 to 120.0 Hz
for details on default settings.
= 77) takes priority over the ASR gain switching frequency.
Setting Range
0 to 400%
YASKAWA ELECTRIC TOEP C710687 03B FSDrive-MV1000 Parameter Guide
= 77).
Proportional gain
determined
common_TMonly
by motor speed.
C5-03 gain setting
Default
Determined by A1-02
Default
Determined by A1-02
Default
200%
<1>
<1>