7-4
IM 05P02D41-01EN
7.1.3 SettingReferenceJunctionCompensation(RJC)orExternalReference
JunctionCompensation(ERJC)
Description
ReferenceJunctionCompensation(RJC)
WhenTCinputisselected,presence/absenceofinputreferencejunctioncompensation
can be set.
Usually input values are compensated with the RJC function provided for the controller.
However, if it is necessary to rigorously compensate the values with a device other than
thefunctionofthecontroller,forexamplewithazero-compensator,theRJCfunctionof
the controller can be turned off.
ExternalReferenceJunctionCompensation(ERJC)
For TC input, a temperature compensation value for external device can be set.
The external RJC can be used only when RJC = OFF.
Furnace
Furnace
UP35A/UP32A
Compensating lead wire
Compensating lead wire
Terminal block
Terminal block
TC
TC
Installed in an area where
ambient temperature is
Set the temperature in the
area using ERJC parameter.
Normal wiring
Example:
Setting parameters
RJC = OFF,
ERJC = 25.0°C
SettingDetails
Parameter
symbol
Name
Display
level
Settingrange Menusymbol
RJC
PV input reference
junctioncompensation
PRO
OFF: RJC OFF
ON: RJC ON
PV
ERJC
PV input external RJC
setpoint
PRO -10.0 to 60.0°C PV
7.1SettingFunctionsofPVInput