Panasonic FP-E Programming Manual page 1037

2−1: Auto−tuning bias value (S4+6)
Auto−tuning is executed with (set value (SP) − auto−tuning bias value) as a set value (SP').
It is used to control excessive temperature rise while auto−tuning is performed.
For the forward operaiton, auto−tuning is executed with (set value (SP) + this set value) as a set value.
Temperature
Set value
(SP)
Auto−tuning bias value
(SP')
Temperature
(SP')
Set value
(SP)
Note) Even if starting auto−tuning in the condition that measured value (PV) is close to set value (SP),
auto−tuning is peformed with the above SP'.
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During auto−tuning
Auto−tuning bias value
During auto−tuning
PID control
KP, TI and TD calculation
PID control
KP, TI and TD calculation
High−level Instructions
Auto−tuning in reverse operation
Time
Auto−tuning in forward operation
Time
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