Azbil DCP31 - Page 166

7-56
Chapter 7. PARAMETER SETUP

C 6 6
(PV display)
ThisselectsPVdisplayinthebasicdisplaystate.Youcanselect
betweennumericaldisplayornodisplayatall.Thesettingofthis
parameterdoesnotinfluencePV-relatedinputprocessing,PID
operation,eventoutput,auxiliaryoutputandalarmdisplay.
Also,toeliminatePValarmdisplayorPValarmeventoutput,select
thethermocouplerangebytheinputrangetoshort-circuittheinput
terminals.

C 7 2
(cold junction compensation)
0: Compensatedinternally
1: Compensatedexternally
•Thisselectshowthermocouplecoldjunctionsaretobecompen-
sated.
•Whensetto1,carryout0°Ccompensationbyanicebox,for
example.

C 7 4
(voltage time-proportional output system)
0: InputONagainenabledwithintime-proportionalcycle
1: InputONagaindisabledwithintime-proportionalcycle
•ThisselectswhetherornottoturnoutputONagainifoutputis
OFFandtheresultsofPIDcalculationhavechangedduringthe
time-proportionalcycle(cycletime).
•Thefigurebelowshowseachofthesedifferences.
OFF
ON
20 % 50 % 40 %
OFF
ON
20 % 50 % 40 %
Setting=0
Setting=1
Cycle time Cycle time
Cycle time Cycle time
PID operation result
PID operation result