54
Shifting Input Values Section 4-1
4-1-3 One-point Shift Method
1,2,3... 1. In the configuration shown in Figure 1, bring the set point to near the value
at which the temperature of the control target is to be controlled. Let’s as-
sume that the control target temperature (C) and the control target temper-
ature (B) are matching.
2. Check the control target temperature (B) and the controller readout (A).
Take the following value as the input shift value, and set the same numer-
ical values to “insl” and “insh”.
Figure 2 shows the effect of one-point temperature input shift.
3. After you have set the input shift values, check controller readout (A) and
control target temperature (B). If they are almost the same, this completes
temperature input shift.
4-1-4 Two-point Shift Method
Use two-point input shift if you want to increase the accuracy of the readout
values across the range of the sensor.
1,2,3... 1. Shift the controller readout by two points, near room temperature and near
the value at which the temperature of the control target is to be controlled.
For this reason, bring the control target temperature to near room temper-
ature and to near the set point, and check control target temperature (B)
and controller readout (A).
Fi
ure 1 Confi
uration When Compensatin
an Infrared Temperature Senso
Infrared
temperature
sensor
(A) E5EZ Temperature controller
(B) Thermometer
(C) Control target
−
+
Upper-limit
temperature
input shift value
Lower-limit
temperature
input shift value
Adjustment level
in5h
10
C
in5l
10
C
control target temperature (B) - controller readout (A)
Controller readout (A)
Temperature readout
after shift (e.g. 120°C)
Temperature readout
before shift (e.g. 110°C)
After shift
Input shift value (e.g. 10°C)
Before shift
Near set point
(e.g. 120°C)
Temperature readout of
control target (B)
Figure 2 One-point Temperature Input Shift
0
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