Omron C200H-PID01 Operation Manual page 37

Parameter Displays and Settings
Control Period (Display Level 1)
Hysteresis (Display Level 1)
Alarm Hysteresis (Display Level 1)
PV
SV
This sets the control period. It is valid when SW203-1 is OFF (PID control).
The control period is the time required to complete one transistor output or volt-
age output ON/OFF cycle.
ON
OFF
PV
SV
Hysteresis prevents control output chattering and eliminates noise influences.
When switching from ON to OFF, operation proceeds at the set point. When
switching from OFF to ON, operation proceeds at a lower point determined by
the hysteresis SV, as shown in the illustration below.
ON
Hysteresis is applied in the following situations.
When ON/OFF control is selected (i.e., when SW203-1 is ON).
When advanced PID control is selected (i.e., when SW203-1 is OFF) and P
(proportional band) is 0.
PV
SV
Alarm hysteresis prevents alarm output chattering and eliminates noise in-
fluences. It is invalid when both ALARM mode 1 and ALARM mode 2 are set to
"0."
When switching from OFF to ON, operation proceeds at the set point. When
switching from ON to OFF, a hysteresis SV operating band is provided which
Control period parameter symbol
Control period of currently selected loop
(Unit: seconds)
ON time
Control period
Hysteresis parameter symbol
Hysteresis of currently selected bank and loop
(Unit: %FS)
Hysteresis
Set point
Alarm hysteresis parameter symbol
Alarm hysteresis of currently selected loop
(Unit: %FS)
Section 3-4
OFF
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