Azbil DCP31 - PID set selection

5-11
Chapter 5. FUNCTIONS

PID set selection
• EightsetsofPIDparameters,PID1toPID8,are
usedforcontroloperation.WhenthePIDsetNo.
issettoeachsegmentbydesignatingthePIDset
segment,controloutputiscalculatedbyeachof
thePIDparameters.
• TherearetwowaysofselectingPIDsets:bydes-
ignatingthePIDsetsegmentandPIDsetauto-
switching.Themethodcanbeselectedbysetting
setupdataC11.
C11setto0:DesignationofPIDsetsegment
C11setto1:PIDsetauto-switching
 Thesetwomethodscannotbesetsimultaneously.
Note
 WhensetupdataC11issetto1,PIDitemsin
theprogramsetuparenotdisplayed.
• BydesignationofPIDsetsegment,thePIDset
No.issetforeachsegment,andcontroloutputis
calculatedbyeachofthePIDparameters.
• ByPIDsetauto-switching,theSPfull-scaleis
dividedintoeightzonesaccordingtothesettings
ofCP.11toCP.17,andthePIDconstantto
beusedaccordingtotheSPvalueisautomatically
selectedtocalculatethecontroloutput.
1 2 43
PID set No.
PID set segment designation
Zone 8
Zone 7
Zone 6
Zone 5
Zone 4
Zone 3
Zone 2
Zone 1
All SP ranges
are divided to
eight zones.
PID set automatic switching
CP. 1 7
CP. 16
CP. 15
CP. 14
CP. 13
CP. 12
CP. 1 1