YASKAWA GA700 Technical Manual page 657

Figure 11.54 Proportional Gain via Multi-function Digital Input Switch
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Speed Waveform Monitoring Method
To make fine adjustments of ASR parameters, observe speed waveforms while making adjustments. The
following table lists example settings of parameters used to observe speed waveforms.
Table 11.29 Example Settings of Multi-function Analog Output Terminals Used to Monitor Speed Waveforms
No.
H4-01
H4-02
H4-03
H4-04
H4-05
H4-06
H4-07
H4-08
These settings result in the following multi-function analog output configuration. The multi-function analog
output common is the terminal AC.
• Terminal FM: Outputs the output frequency after SFS within a range of -10 to +10 V (-100 to +10).
• Terminal AM: Outputs the motor speed within a range of -10 to +10 V (-200 to +20 ).
Yaskawa recommends monitoring both the output frequency after SFS and the motor speed to observe any delay
in response and differences in reference values.
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Adjusting the ASR Parameters
Use the following table when making adjustments to ASR. The table lists parameters for motor 1. Though the
parameters listed below are for motor 1, the same changes can be made to the corresponding motor 2 parameters
when running 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.
YASKAWA ELECTRIC SIEP C710617 01B YASKAWA AC Drive GA700 Technical Manual
Name
MFAO Terminal FM Monitor
Select
FM Analog Output Gain
FM Analog Output Bias
MFAO Terminal AM Monitor
Select
AM Analog Output Gain
AM Analog Output Bias
MFAO Term FM Signal Level
Select
MFAO Term AM Signal Level
Select
Problem
Setting Value
116 This setting enables use of the
terminal FM to monitor U1-16
[Output Freq afterSFS].
100.0%
0.0%
105 This setting enables use of the
terminal AM to monitor U1-05
[Motor Speed].
50.0%
0.0%
1 This setting enables monitoring
within a range of -10 to +10 V.
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.
11.4 C: Tuning
Description
11
657