20
Chapter 5 INITIAL SETTINGS
PV
PV
Time
ON
OFF
ON delay time
Event setting
Event output
●
Self-tuning Startup Width Setting
Any deviation width (
S
b
) for startup can be set as a startup condition of self-tuning.
Startup width (
S
b
) is set in the parameter settings. Setting the startup width to “0” dis-
ables (self-tuning is started only when the SP value changes) self-tuning by deviation.
The startup width (
S
b
) is set to “0” in the following applications:
- In the case of interference control targets (e.g. instruments that are easily influenced by
changes in the temperature of adjacent (up, down, left, right) zones
- In the case of control targets where disturbance is generated intermittently (e.g. pack-
aging equipment)
SP value
PV value
Startup width (sb)
Self-tuning startup
Note
Event ON delay
An event operation whose condition (exceeding an upper temperature limit, for
example) has been satisfied is not activated until a set time has elapsed.
