Switching Pid According To Target Sp - YOKOGAWA UT Advanced UT32A User Manual

8.4 Switching PID
8.4.4

Switching PID According to Target SP

Description
SP
Maximum value of
PV input range
800ºC
Reference point 3
350ºC
Reference point 2
250ºC
Reference point 1
100ºC
Minimum value of
PV input range
PID No. to be selected
8-30
The zone PID selection by target SP switches between the groups of PID parameters
according to the target SP.
The figure below shows the example of switching the group of PID parameters according
to the target SP. It shows an example of dividing the PV input range from the maximum
value to the minimum value into four zones by reference points 1 to 3. (Set RP1 to RP3.)
Target SP
PID of group 1 PID of group 3
Target SP is
changed from
100ºC to 350ºC
The PV input range can be divided into the number of zones that is set in the reference
point.
Reference deviation can be set at the same time.
► Reference deviation: 8.4.5 Switching PID according to Deviation (Reference Deviation)
Current SP
PID of group 2
Target SP is
changed from
350ºC to 250ºC
(PID of group 4)
(PID of group 3)
(PID of group 2)
(PID of group 1)
PID of group 5
Target SP is
changed from
250ºC to 800ºC
IM 05P01D31-01EN
Time