Shifting Input Values
4-1
Shifting Input Values
4-1-1
Shifting Inputs
One-point shift
Temperature
ins
Input Shift
Operating Procedure
Operation Level
C
30.0
200.0
Adjustment Level
Adjustment
l.adj
Level Display
Temperature
C
ins
Input Shift
0.00
C
ins
1.00
Operation Level
C
31.0
200.0
Either a 1-point shift or a 2-point shift can be used to shift the input. The
default setting is for a 1-point shift. To execute a 2-point shift, change the Input
Shift Type parameter (istp) setting (advanced function setting level) to ins2.
There is no shift function for analog inputs. Use scaling for fine adjustments.
• With a 1-point shift, the value set for the Temperature Input Shift parame-
ter (adjustment level) is applied to each point in the entire temperature
input range. For example, if the input shift value is set to 1.2 C, the pro-
cess value is treated as 201.2 C after the input shift is applied when the
measured process value is 200 C.
Temperature
Upper limit
After shifting
Input shift value
Lower limit
0
In this example, the input from a K sensor is shifted by 1 C using a 1-point
input shift.
Operation Level
1. Press the O Key twice to move from the operation level to the adjustment
level.
2. Select the Temperature Input Shift parameter by pressing the M Key.
3. Press the U or D Key to set 1.00.
4. To return to the operation level, press the O Key twice. The process val-
ue is 1 C larger than before the shift was applied.
Before
shifting
Input
100
Section 4-1
95