Filter
Top Products
189
CHAPTER 4 FUNCTIONS
4
4.8 Derivative Action Selection Function
4.8 Derivative Action Selection Function
An derivative action appropriate for each of fixed value action and ramp action can be selected and the action
characteristic can be improved using this function.
(1) Action
Each type of derivative action operates as shown below.
(2) Setting method
Set a value in CH Derivative action selection ((Un\G729, Un\G745, Un\G761, Un\G777).
For details on the setting, refer to the following.
Page 153, Section 3.4.2 (79)
CH Derivative
action selection
(Un\G729, Un\G745,
Un\G761, Un\G777)
Action
Measured value
derivation (0)
This setting effectively
prevents the
temperature from being
affected by disturbance,
though the performance
to follow the set value
can be low.
Deviation derivation (1)
This setting allows the
temperature to follow
the set value well,
though the disturbance
effect is great.
Common
Ramp action
Fixed value action
Disturbance
Set value (SV)
Temperature
process value
(PV)
Temperature
process value
(PV)
Set value (SV)
Disturbance
Fixed value action Ramp action