Chapter 10. Advanced functions

10.7 PID Control

 

Group

 

 

LED Display

 

 

Parameter Name

 

 

Set

 

 

 

Min/Max

 

 

Factory

 

 

Unit

 

 

 

 

 

 

 

 

value

 

 

 

Range

 

 

Defaults

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Function

 

H40

 

 

[Control mode select]

 

 

2

 

0/3

 

0

 

-

 

group 2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

H50

 

[PID Feedback select]

-

 

0/1

 

0

 

-

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

H51

 

[P gain for PID controller]

-

 

0/999.9

 

300.0

 

%

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

H52

 

[Integral time

for

PID

-

 

0.1/32.0

 

300

 

 

Sec

 

 

 

 

 

controller (I gain)]

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

H53

 

[Differential time for

PID

-

 

0.0/30.0

 

0

 

 

Sec

 

 

 

 

 

controller (D gain)]

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

H54

 

[F gain for PID controller]

 

 

 

0/999.9

 

0

 

%

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

H55

 

[PID output

frequency

-

 

0/400

 

60.0

 

 

Hz

 

 

 

 

 

limit]

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

I20~24

 

[Multi-function

 

input

21

 

0/24

 

-

 

-

 

 

 

 

 

 

terminal P1-P5 define]

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ƒSet H40 to 2 {PID Feedback control}.

ƒOutput frequency of the inverter is controlled by PID control for use as constant control of flow, pressure or temperature.

H50: Select the feedback type of PID controller.

H50

[PID feedback

select]

0{Terminal I input (0 ~ 20 mA)}

1{Terminal V1 input (0 ~ 10 V)}

H51: Set the percentage of output to error. If P Gain is set to 50%, 50% of the error value will be output.

H52: Set the time needed to output the accumulated error value. Set the time required to output 100% when the error value is 100%. If H52 - [Integral time for PID controller (I gain)] is set to 1 sec, 100% is output in 1 sec.

H53: Set the output value corresponding to the variation of the error. The error is detected by 0.01 sec in C series. If differential time is set to 0.01 sec and the percentage variation of error is 100 per 1 sec, 1% in 100% is output per 10msec. H54: PID Feed Forward Gain. Set the gain to add the target value to the PID controller output.

H55: It limits the output of the PID controller.

I20~I24: To exchange PID, set one of P1-P5 terminal to 21 and turn ON.

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Image 87
LG Electronics C Series manual PID Control