LiteOn EVO600021SD75E20F - PID Control

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 b3- 02 Retain
 b3- 03 Speed Search Waiting Time
No.
Name
Setting Range
Default
b3-03
Speed Search Waiting Time
0.0 to 100.0 s
0.2 s
b5 PID Control
PID control utilizes Proportional, Integral and Derivative Control to minimize the deviation
between the PID target and feedback.
■ P Control
P control outputs the proportion of P gain and the deviation linearly. With only P control, the
deviation will not fall to 0.
■ I Control
I control outputs the integral of the deviation. This minimizes the deviation between the PID
target and feedback but not suitable for rapid load fluctuations.
■ D Control
D control multiplies a time constant with deviation derivative (deviation slope) to predict the
deviation, and then adds this value to the PID input. This utilizes derivative to control the
braking and vibration.
D control tends to cause instability as the interference to deviation signal is larger. Use P
control only when necessary.
■ PID Control Operation
See the PID operation illustrated below how the P, I and D output frequency changes when the
deviation between the PID target and feedback is constant.
■ PID Control Applications
PID control can be used in the following applications.
Application
Description
Sensors Used
Speed
Control
Adjusts the machinery speed to the target speed.
Synchronizes the machinery speed from other
machinery as the target speed.
Tachometer
Pressure
Feeds back pressure date to maintain constant pressure.
Pressure sensor