Pid Control - LG SV-iC5 Series Instruction Manual

10. Advanced functions
10.7

PID Control

Group LED Display
Function
H40
group 2
H50
H51
H52
H53
H54
H55
I20~24
Set H40 to 2 {PID Feedback control}.
Output 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
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 SV-iC5. 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.
Parameter Name
[Control mode select]
[PID Feedback select]
[P gain for PID controller]
[Integral time for
controller (I gain)]
[Differential time for PID
controller (D gain)]
[F gain for PID controller]
[PID output frequency limit]
Multi-function input terminal
P1-P5 define
[PID feedback 0
select]
1
Set Min/Max
value Range
2
-
- 0/999.9
PID
- 0.1/32.0
- 0.0/30.0
0/999.9
-
21
{Terminal I input (0 ~ 20 mA)}
{Terminal V1 input (0 ~ 10 V)}
10-8
Factory
Defaults
0/3 0
0/1
0
300.0
300
0
0
0/400 60.0
0/24 -
SV-iC5
Unit
-
-
%
Sec
Sec
%
Hz
-