YOKOGAWA UT55A - Page 128

7-21
IM 05P01C31-01EN
Input(PV,Remote,andAuxiliaryAnalog)Functions
7
SwitchingbyContactInput(ParameterPV.2C=2)
This method switches two inputs by contact input ON/OFF.
Whenthecontact
inputisOFF,PV=Input1(low-temperatureside).
WhenthecontactinputisON,PV=Input2(high-temperatureside).
Input 2
(High-temperature side)
PV
Input 1
(Low-temperature
side)
Time
Input 1 Input 1Input 2 Input 2
Contact
input
ON
OFF
The function is assigned to DI16 for the factory default when switched by DI.
Controloutputwillchangesmoothly(i.e.,withoutanybumps)whenPVswitches.
Setting Details
Parameter
symbol
Name
Display
level
Setting range Menusymbol
PV.2C
Input switching action
(in Loop control with
PVswitching)
STD
0: Switch based on low limit of
temperature range
1: Switch using the parameter
PV.HL
2: Switch using DI
3: Switch based on high limit of
temperature range
MPV
PV.HL
InputswitchingPVhigh
limit (in Loop control
withPVswitching)
STD
0.0to100.0%ofcontrolPV
inputrange(EU),(PV.HL>PV.
LL)
PV.LL
InputswitchingPVlow
limit (in Loop control
withPVswitching)
STD
7.7SettingPVSwitchingMethodsofLoopControlwithPVSwitching