User guide

Publication 900-UM007D-EN-E - January 2011
Parameter Adjustments & Application Considerations 4-7
EXAMPLE
In this example, we use the non-contact (infrared) sensor
type K thermocouple 0…260 °C specification to do a
2-point shift.
YL and YH in equations 1 and 2 are set temperature
Lower-Limit (YL = 0 °C) and set temperature Upper-Limit
(YH = 260 °C). Check the temperature of the control
target.
When the room temperature (X1) is 25 °C, the readout on
the controller (Y1) is 40 °C, and when the temperature near
the set point (X2) is 110 °C, the readout on the controller
(Y2) becomes 105°C.
Lower-limit temperature input shift value:
Upper-limit temperature input shift value:
C
insl
-27.3
Lower-limit
temperature
input shift
value
x {(110 – 105) – (25 – 40)} + (25 – 40) = –27.3°C
0 – 40
105 – 40
insl =
C
insh
52.7
Upper-limit
temperature
input shift
value
insh =
x {(110 – 105) – (25 – 40)} + (25 – 40) = –52.7°C
60 – 40
105 – 40