51
SC-F70
SC-F70
PID Operation Operating Instructions
3.5 Compensation for Control Responsiveness
The Auto-tuning operation sets the PID constants that will take the best
compensation actions against possible external disturbance. If you want
to improve the control responsiveness, use the following procedure:
Step
Action
1
1
Press the key until the Area number you
want to set is displayed.
2
Press the key until " " is displayed.
Press the or key to select 0, 1, or 2
for setting.
0: Slow
Priority is given to suppressing
overshooting. Rising is more
gradual.
1: Medium
Intermediate between 0 and 2.
2: Fast
Priority is given to rising rapidly.
Overshooting is inevitable.
* The initial setting is 0.
* Each setting affects the control output, as
shown at right.
PARA
AREA
ENT
A.SEL
DISP
MODE
PV
SC-F70
2
ENT
AREA
<
<
Fast
Slow
Medium
Notes:
1. A change in the responsiveness setting affects only the algorithm, not values of PID.
2. Cr must be set for each AREA.
3. If you cannot get enough improvement by setting the Cr, change the PID setting by
referring to "3.6 PID Constants Fine Tuning Method" on page 52.