87
2. Restraint output from oscillating
a: Decrease differential time (D
value) or set it as 0
b: Decrease the value of
proportional constant (P)
Default value 100
PID upper limit alarm value
P605
Setting Range:0.0~100% Unit:0.1
Set the upper limit value. If the feedback value exceeds the setting,
The alarm signal is output. The maximum input (20mA/10V) of the measured
value (Termina AVI) is equivalent to 100%.
Default value 0
PID lower limit alarm value
P606
Setting Range:0.0~100% Unit:0.1
Set the lower limit value. If the feedback value falls below the setting range, the
alarm signal is output. The maximum input (20mA/10V) of the measured value
(Terminal AVI) is equivalent to 100%.
Default value 100%
PID proportional band
P607
Setting Range:0.0~200% Unit:0.1
P607PID proportional bandInitial value :100%Setting range0.0-200%Unit0.1If
the proportional band is narrow (parameter setting is small), the manipulated
variable varies greatly with a slight change of the measured value. Hence, as
the proportional band narrows, the response sensitivity (gain) improves but the
stability deteriorates, e.g.hunting occurs.
6
Chapter 6 Description of parameter setting
FC100 Series User Manaul
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