YASKAWA GA800 Programming Manual page 263

Table 2.32 Example Settings of MFAO Terminals to Monitor Speed Waveforms
No.
H4-01
H4-02
H4-03
H4-04
H4-05
H4-06
H4-07
H4-08
These settings cause this MFAO configuration. The MFAO common is terminal AC:
• Terminal FM: Outputs the output frequency after SFS in a -10 V to +10 V (-100% to +100%) range.
• Terminal AM: Outputs the motor speed in a -10 V to +10 V (-200% to +200%) range.
Yaskawa recommends that you monitor the output frequency after SFS and the motor speed for delays in response
and differences in reference values.
■
Adjust ASR Parameters
Use Table 2.33 to adjust ASR. The table shows the parameters for motor 1. To operate motor 2, set the motor 2
parameters in the same method.
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.
Speed accuracy is unsatisfactory when you operate a motor
that has a large quantity of rated slip in Closed Loop V/f
Control.
YASKAWA TOEPYAIGA8002B GA800 Drive Programming
Name
Terminal FM Analog Output Select
Terminal FM Analog Output Gain
Terminal FM Analog Output Bias
Terminal AM Analog Output Select
Terminal AM Analog Output Gain
Terminal AM Analog Output Bias
Terminal FM Signal Level Select
Terminal AM Signal Level Select
Table 2.33 ASR Response and Possible Solutions
Problem
Setting Value
116 Lets you use terminal FM to monitor U1-16
[SFS Output Frequency].
100.0%
0.0%
105 Lets you use the terminal AM to monitor
U1-05 [Motor Speed].
50.0%
0.0%
1 Lets you monitor in a -10 to +10 V range.
1
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].
• Check the pulse number set to F1-01 [Encoder 1 Pulse
Count (PPR)] and the gear ratio set to F1-12 [Encoder 1
Gear Teeth 1] and F1-13 [Encoder 1 Gear Teeth 2].
• Make sure that you correctly set the pulse signal from
the encoder.
• Check U6-04 [ASR Output] to make sure that the ASR
operates at its output limit set to C5-05 [ASR Limit]. If
the ASR is at the output limit, increase C5-05.
2.4 C: Tuning
Description
2
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