LiteOn EVO 6800 Series, Руководство пользователя

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■ Timer Function Operation
When the timer input closes for longer than the time set to b4-00, the timer switches on. When
the timer input opens for longer than the time set to b4-01, the timer switches off. The Timer
Function operation is illustrated in Figure 6.15.
ON
ON
ON
ON
Multi-Function
Input (Timer Input)
b4-00
b4-00
b4-01
b4-01
Multi-Function Output
(Timer Output)
Off (Open)
On (Closed)
On (Closed)
Off (Open)
Figure 6.15 Timer Function Operation
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.