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E6581090
4) Adjusting the PI control gain level
Adjust the PI control gain level according to the process quantity, the feedback signal and the object to be controlled.
The following parameters are provided for gain adjustment.
Parameter | Adjustment range | Default setting |
H (P gain) | 0.01~100.0 | 0.30 |
H (I gain) | 0.01~100.0 | 0.20 |
H (Proportional (P) gain adjustment parameter)
This parameter is used to adjust the proportional gain level during PI control. A correction factor, which is proportional to the particular deviation (the difference between the set frequency and the feedback value), is obtained by multiplying this deviation by the parameter setting.
Increasing the P gain increases response. However, increasing it higher than required results in an undesirable event such as hunting.
6 | Fast response | Process quantity |
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Slow response
Time
H (Integral (I) gain adjustment parameter)
This parameter is used to adjust the integral gain level during PI control. Any deviations remaining after proportional control are cleared to zero (residual deviation offset function).
Increasing the I gain increases response. However, increasing it higher than required results in an undesirable event such as hunting.
Process quantity setting
Residual deviation
Time
5) Adjusting an analog command voltage
To use feedback input (VI/S3 terminal), perform a
If the feedback input value is very small, the
Example of voltage signal setting | Example of current signal setting | ||
H |
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H |
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(0Hz) 0V |
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10V | (0Hz) 4mA | 20mA | |
H | H | H | H |
0% | 100% | 20% | 100% |
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