Instructions

53
SET VALUE OFFSET
ANTI-RESET WINDUP (0, SCALE HIGH POINT)
While PID operation is running if
- <= process value <= + condition is true,
integral value is calculated. If the condition is not true, integral value is
not calculated and last calculated integral value is used. If Ar
Parameter is selected , heating proportional band is used for
heating PID process instead of Ar Parameter and cooling proportional
band is used for cooling PID process instead of Ar Parameter.
Note: Point position changes according to process input type and
scale, unit changes according to the selection in parameter.
(( - SCALE HIGH POINT / 2 ) , ( SCALE HIGH POINT / 2) )
+ is used as set value in PID calculations. It is used for
shifting the proportional band.
Example: If = 500 = 5 = -5°C, °C or °C, shifting of
the proportional band is shown below :
Note: Point position changes according to process input type and
scale, unit changes according to the selection in parameter.
Scale High Point : Maximum process input value in Pt-100 and Tc
inputs
9999 for fixed dual point calibration used inputs,
Scale high point is the biggest one from or for selectable
dual point calibration used inputs
Scale high point is the biggest one from or for multi point
calibration used inputs
500 505
SuoF = 5°C
SuoF = -5°C
Process
Output
100%
50%
0%
Process
Value (°C)
495
Process
Value
Time
Ar Value
Ar Value
New
Integral
Value is
not calculated
Process Set
Value ( )
New
Integral
Value is
calculated
New
Integral
Value is
not calculated
IS
SELECTED
IF