Omron SYSDRIVE 3G3MV User Manual page 157

Advanced Operation
·Feedback-value Integral PID Control
In this control, the feedback integral value is used. The Inverter normally uses this con-
trol method. The response will be comparatively slow if the target value changes
because the feedback integral value is used. The stable control of the target is, how-
ever, possible.
Target value
·Basic PID Control
This is the basic control method. The response will be quick if the target value changes
because the deviation integral value is used. If the target value changes rapidly, how-
ever, the control value of the derivative control block will be large. As a result, over-
shooting or undershooting may result.
Target value
·Furthermore, 3G3MV Inverter can add the frequency reference to the operation result
of the PID control block.
If the target of control is motor speed, by adding the frequency reference, motor speed
control with high-speed response will be possible.
Do not add the frequency reference if the target of control is temperature or pressure.
Detected value (Feedback value)
Detected value (Feedback value)
Chapter 6
Target of
control
Target of
control
6-15