YASKAWA CIPR-GA50C series Technical Manual page 533

Figure 12.46 Proportional Gain through Multi-function Digital Input Switch
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Speed Waveform Monitoring Method
To make small adjustments of ASR parameters, monitor the speed waveforms when you make the adjustments.
Table 12.38 shows example settings of parameters to monitor speed waveforms.
Table 12.38 Example Settings of MFAO Terminals to Monitor Speed Waveforms
No.
H4-01
H4-02
H4-03
H4-07
Based on this setting, MFAO terminal AM outputs the output frequency after SFS in a 0 V to 10 V (0% to 100%)
range. The MFAO common is terminal AC:
Yaskawa recommends that you monitor the output frequency after SFS and the motor speed for delays in response
and differences in reference values.
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Adjust ASR Parameters
Use Table 12.39 to adjust ASR. The table lists parameters for motor 1. You can make the same changes to motor 2
parameters when you run a second motor.
Note:
When adjusting the proportional gain and integral time, adjust the proportional gain first.
Speed response is slow.
Overshoot or undershoot occurs at the end of acceleration
or deceleration.
Vibration and oscillation occur at constant speed.
Oscillation at low speed and response is too slow at high
speed.
Oscillation at high speed and response is too slow at low
speed.
YASKAWA SIEPC71061753A GA500 Technical Manual
Name
Terminal AM Analog Output Select
Terminal AM Analog Output Gain
Terminal AM Analog Output Bias
Terminal AM Signal Level Select
Table 12.39 ASR Response and Possible Solutions
Problem
-
Setting Value
116 Lets you use terminal AM to monitor U1-
16 [SFS Output Frequency].
100.0%
0.0%
0 Lets you monitor in a 0 V to 10 V range.
Possible Solutions
• Increase C5-01/C5-03 [ASR Proportional Gain].
• Decrease C5-02/C5-04 [ASR Integral Time].
• Decrease C5-01/C5-03.
• Increase C5-02/C5-04.
• Decrease C5-01/C5-03.
• Increase C5-02/C5-04.
• Increase C5-06 [ASR Delay Time].
When A1-02 = 6 [Control Method Selection = AOLV/
PM], use C5-01 to C5-04 to set the best ASR settings for
high and low speed. Use C5-07 [ASR Gain Switchover
Frequency] to switch the ASR proportional gain and ASR
integral time as specified by the output frequency.
12.4 C: Tuning
Description
12
533