Download MELSEC iQ-R Temperature Control Module User`s Manual

1.15
Derivative Action Selection Function
This function improves dynamic characteristics by selecting a suitable derivative action for fixed value actions or ramp
actions.
Action
Each type of derivative action operates as shown below.
Setting of "Derivative action
selection"
Measured Value Derivative (0)
Action
Fixed value action
Ramp action
Set value (SV)
Disturbance
This setting effectively prevents
the temperature from being
affected by a disturbance.
However, the performance to
follow the set value can be low.
Temperature
process value
(PV)
Deviation Derivative (1)
Fixed value action
Ramp action
Set value (SV)
Disturbance
This setting allows the
temperature to follow the set
value well. However, the
temperature get affected by a
disturbance greatly.
Temperature
process value
(PV)
Setting method
Configure the setting as follows.
[Navigation window]  [Parameter]  Target module  [Module Parameter]  [Application Setting]  [Derivative action
selection]
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1 FUNCTIONS
1.15 Derivative Action Selection Function