YOKOGAWA ADMAG TI Series User Manual

<Appendix 5. PID Block>
283
IM 01E21A02-03EN
A5.4.2 PID Control Algorithm Parameters
The table below shows setting parameters for the PID control algorithm.
Parameter Description Valid Range
GAIN
Proportional
gain
0.05 to 20
RESET Integral time
0.1 to 10000
(seconds)
RATE
Derivative
time
0toinnity
(seconds)
A5.5 Control Output Action
Thecontroloutputactionisthefunctiontoconvertthechangeinoperationoutput(ΔMVn)at
eachcontrolperiodtotheactualoperationoutputvalue(OUT).
ThecontroloutputactionforthePIDblockofEJXsupportsthevelocity-type.
A5.5.1 Velocity Type
ThePIDblockdeterminesthevalueofthenewcontroloutput(OUT)byaddingthechangein
controloutputcalculatedinthecurrentcontrolperiod(ΔMVn)tothevaluereadbackfromthe
outputdestination(BKCAL_IN).
The calculation expression for the control output action of speed type is shown below.
ΔMVn’=ΔMVn*(OUT_SCALE.EU100-OUT_SCALE.EU_0)/(PV_SCALE.
 EU_100-PV_SCALE.EU_0)
(DirectActingisFalseinCONTROL_OPTS)
 OUT=BKCAL_IN-ΔMVn’
(DirectActingisTrueinCONTROL_OPTS)
 OUT=BKCAL_IN+ΔMVn’
A5.6 Direction of Control Action
The operating direction of the output is switched for the increase or decrease of the deviation.
ThedirectionisspeciedwithDirectActingofCONTROL_OPTS.
Value of Direct
Acting
Description
True
Theoutputincreaseswhenthemeasuredvalue(PV)is
greaterthanthesetpoint(SP).
False
Theoutputdecreaseswhenthemeasuredvalue(PV)is
greaterthanthesetpoint(SP).

YOKOGAWA ADMAG TI Series Specifications

General

Brand	YOKOGAWA
Model	ADMAG TI Series
Category	Measuring Instruments
Language	English