YOKOGAWA UT Advanced UT32A, User Manual

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7-4
IM 05P01D31-01EN
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
UT35A/UT32A
UT35A/UT32A
Compensating lead wire
Compensating lead wire
Terminal block
Terminal block
TC
TC
Installed in an area where
ambient temperature is
fixed to 25 °C.
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