B5: Pid Control - YASKAWA GA700 Technical Manual

■
b4-06: Terminal M3-M4 OFF-Delay Time
No.
Name
(Hex.)
b4-06 Terminal M3-M4
OFF-Delay Time
(0B33)
Expert
■
b4-07: Terminal M5-M6 ON-Delay Time
No.
Name
(Hex.)
b4-07 Terminal M5-M6
ON-Delay Time
(0B34)
Expert
■
b4-08: Terminal M5-M6 OFF-Delay Time
No.
Name
(Hex.)
b4-08 Terminal M5-M6
OFF-Delay Time
(0B35)
Expert
◆

b5: PID Control

The drive has a PID control function. You can control drive output to adjust the proportional gain, integral time,
and derivative time that has an effect on the bias between the target value and the feedback value to match the
target value to the detected value. Use this function to adjust the drive output to accurately match the flow,
pressure, and temperature in the application match the target value.
Use a combination of these controls to increase the performance:
• P control
P control has a proportional effect on the deviation. It outputs the product (the controlled output) proportional to
the deviation. You cannot use only the offset from P control to get to zero deviation.
• I control
I control is the integral of the deviation. It uses an integral value of the deviation to output the product (the
controlled output). I control helps align the feedback value and the target value.
• D control
D control is the derivative of the deviation. D control has an effect on drive output when there are sudden, large
changes in the output. It quickly returns drive output to the value before the sudden change. It multiplies a time
constant by a derivative value of the deviation (slope of the deviation), and adds that result to PID input to
calculate the deviation of the signal, then it corrects the deviation.
Note:
D control has causes less stable operation because the noise changes the deviation signal. Use D control only when necessary.
■
PID Control Operation
Figure 11.35 shows PID control operation. The modified output (output frequency) changes when the drive uses
PID control to keep the deviation (the difference between the target value and the feedback value) constant.
YASKAWA ELECTRIC SIEP C710617 05F YASKAWA AC Drive GA700 Technical Manual
V/f CL-V/f OLV CLV AOLV
Sets the delay time to deactivate the contact after the function set in H2-02
deactivates.
V/f CL-V/f OLV CLV AOLV
Sets the delay time to activate the contact after the function set in H2-03
activates.
V/f CL-V/f OLV CLV AOLV
Sets the delay time to deactivate the contact after the function set in H2-03
deactivates.
Description
OLV/PM AOLV/PM CLV/PM EZOLV OLV/PM
Description
OLV/PM AOLV/PM CLV/PM EZOLV OLV/PM
Description
OLV/PM AOLV/PM CLV/PM EZOLV OLV/PM
11.3 b: Application
Default
(Range)
0 ms
(0 - 65000 ms)
Default
(Range)
0 ms
(0 - 65000 ms)
Default
(Range)
0 ms
(0 - 65000 ms)
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