2.3 C: Tuning
138 YASKAWA ELECTRIC TOEP C710687 03B FSDrive-MV1000 Parameter Guide
The gain set in C5-03 can also be activated with a contact input programmed to “ASR gain switch” (H1- = 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.
Figure 2. 29
Figure 2.29 ASR Proportional Gain Switch
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.
n
C5-06: ASR Primary Delay Time Constant
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.
n
C5-07: ASR Gain Switching Frequency
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.
Note: A contact input set for the ASR gain switch (H1- = 77) takes priority over the ASR gain switching frequency.
n C5-08: ASR Integral Limit
Sets the upper limit for ASR as a percentage of the rated load.
No.
<1> Refer to Control Mode Dependent Parameter Default Values on page 84 for details on default settings.
Name Setting Range Default
C5-06 ASR Primary Delay Time Constant 0.000 to 0.500 s Determined by A1-02 <1>
No.
<1> Refer to Control Mode Dependent Parameter Default Values on page 84 for details on default settings.
Name Setting Range Default
C5-07 ASR Gain Switching Frequency 0.0 to 120.0 Hz Determined by A1-02 <1>
No. Name Setting Range Default
C5-08 ASR Integral Limit 0 to 400% 200%
C5-02 C5-02
OFF
ON
ASR Gain Switch signal
(Contact input)
C5-03 gain setting
Proportional gain (P)
Proportional gain
determined
by motor speed.
MV1000ParameterGuide_E_conditional.book 138 ページ ２０１３年１０月１１日 金曜日 午後８時１８分
To Next Page
Loading...
