YASKAWA GA700 Technical Manual page 764

11.4 C: Tuning
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Use MFDI Switch for Proportional Gain
Note:
If A1-02 = 1 [Control Method Selection = V/f Control with Encoder], you cannot use this function.
You can use the input terminals set for ASR Gain (C5-03) Select [H1-xx = 77] to switch the proportional gains set
with C5-01 and C5-03. When the configured input terminal is deactivated, the proportional gain set for C5-01 is
selected. When the terminal is activated, the proportional gain set for C5-03 is selected. The proportional gain
changes linearly over the time set in C5-02 [ASR Integral Time 1]. The signals from this MFDI are more
important than C5-07 [ASR Gain Switchover Frequency].
Figure 11.58 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 11.37 shows example settings of parameters to monitor speed waveforms.
Table 11.37 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 to +10 V (-100 to +10) range.
• Terminal AM: Outputs the motor speed in a -10 to +10 V (-200 to +20 ) range.
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 11.38 to adjust ASR. The table lists parameters for motor 1, but 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.
764
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
YASKAWA ELECTRIC SIEP C710617 05F YASKAWA AC Drive GA700 Technical Manual
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
Description