CHAPTER 4 APPLIED OPERATION
E5GN
4–16
If the SP ramp function is enabled when the E5GN is turned ON, and when
run" is switched to from stop," the process value may reach the set point
after SP ramp in the same way as when the set point is changed. In this
case, operation is carried out with the process value regarded as the set
point before the change was made.
The direction of the SP ramp changes according to the relationship
between the process value and the set point.
Time
PV < SP
Set point
SP ramp
Power ON
Time
PV > SP
SP ramp
Set point
Power ON
Same
change rate
SP SP
PV
PV
Ă• Execution of autoĆtuning starts after the end of SP ramp.
Ă• When control is stopped or an error occurs, the SP ramp function is disĆ
abled.
F Operation at start
F Restrictions
during SP ramp
operation
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