7. FUNCTIONS
IMSRM02-E6
79
(2) Control response parameter
This is the function of enabling the setting of response to set value (SV) change in select any one of
3 steps (
Slow
,
Medium
,
Fast
) in PID control.
In order to achieve faster controlled object response to set value (SV) change, select
Fast
. However,
slight overshoot is unavoidable when selecting
Fast
. Depending on the controlled object, specify
Slow
if overshoot should be avoided.
(3) Fuzzy function
The fuzzy function is effective to smoothly start operation and to limit overshooting or undershooting
when the set value is changed.
When executing PID control by the fuzzy function, specify
Fast
.
Response characteristic when fuzzy control is used
Measured value (PV)
SV1
SV2
SV0
Time
Fuzzy off
Fuzzy on
Measured value (PV)
Set value (SV) 2
Î
Set value (SV) 1
Î
Change
Set value (SV) change point
Time
Fast
Medium
Slow
