Chapter 6 Description of parameter setting
P604
PID figure target value setting
Setting Range:0~100%
Select AVI as feedback value
100% setting is corresponding to analog input 10V voltage.
PID closed-loop control is widely used to control the process such as pressure
and temperature.
Feedback signal is given from temperature transmitter or pressure transmitter.
In case of PID control, the channel of feedback signal input is of analog signal (4
- 20mA or 0 - 10V). There are two channels available for setting.
Block diagram of PID control:
General regulation method for PID control:
6
(1) Select sensor/transmitter correctly, for which the standard signal of 4 - 20mA
or 0 - 10V shall be selected as output specification.
(2) Set PID action set point correctly.
(3) Increase proportional constant (P), in case of non-oscillating output.
(4) Decrease integration time (Ti), in case of non-oscillating output.
(5) Increase differential (Td), in case of non-oscillating output.
Output1. Restraint output from
exceeding specific value :
a:Decrease differential time (D
value)
b: Increase integration time (I
value)
86
FC100 Series User Manaul
Default value 0
Unit:0.01
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